Help DEHNsupport Toolbox

DEHNsupport Toolbox Entire help for all program parts

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Contents Contents ............................................................................................................................................................ ............................................................................................................................................................ 1 1.

Installation & registration.................................................................... .......................................................................................................................... ...................................................... 5 1.1

System requirements for single-user installation ...................................................................... .............................................................................. ........ 5

1.2

System requirements for server or multi-user installation ................................................................5

1.3

Installation ............................................................ ............................................................................................................................... .............................................................................. ........... 6

1.4

Installation of a multi-user system (server installation) .......................................................... ................................................................... ......... 11

1.5

Registration ..................................................................... ...................................................................................................................................... .................................................................14

2.

First steps & operation ............................................................ ............................................................................................................................ ................................................................ 16 2.1

Fundamental information .......................................................... ................................................................................................................ ......................................................16

2.2

Program surface .............................................................. ............................................................................................................................... .................................................................16

3.

Customer and project management ............................................................. ....................................................................................................... .......................................... 17 3.1

Layout of the customer and project management .................................................................... .......................................................................... ...... 17

3.2

Description of the individual toolbars: .............................................................. ............................................................................................. ............................... 18

3.3

Creating a new customer............................................................ .................................................................................................................. ......................................................19

3.4

Creating a new project ............................................................... ..................................................................................................................... ......................................................21

3.5

Creating a new calculation ......................................................... ............................................................................................................... ......................................................23

4.

DEHN Risk Tool/risk analysis .............................................................. ................................................................................................................... ..................................................... 24 4.1

General ................................................................. ....................................................................................................................................... ............................................................................ ...... 24

4.2

Access to the calculation ............................................................ .................................................................................................................. ......................................................24

4.2.1

Direct access via the start screen .............................................................. ............................................................................................ .............................. 24

4.2.2

Creating/opening a calculation via the start screen........................................................ ................................................................ ........ 25

4.2.3

Creating/opening a calculation via the customer and project management.......................... 27

4.2.4

Selecting the ground flash density ............................................................ .......................................................................................... .............................. 28

4.2.5

Opening an old project (version 2.0) ......................................................... ....................................................................................... .............................. 30

4.3

Layout of the DEHN Risk Tool ................................................................. ........................................................................................................... ..........................................31

4.3.1

Notes on the menu bar................................................................... bar............................................................................................................ ......................................... 32

4.3.2

Description of the project buttons ............................................................ .......................................................................................... .............................. 33

4.3.3

Information on the general project buttons ...................................................................... ........................................................................... ..... 34

4.3.4

Additionally stored information ................................................................ .............................................................................................. .............................. 35

4.4

Entering the basic data of the building ............................................................. ............................................................................................ ............................... 35

4.4.1

Editing objects ..................................................................... ......................................................................................................................... .................................................... 36

4.4.2

Determining the collection areas of a building ............................................................... ....................................................................... ........ 36

4.5

Entering the zones ........................................................... ............................................................................................................................ .................................................................39

4.5.1 1

Division of a building into zones ................................................................ .............................................................................................. .............................. 39 DEHN + SÖHNE GMBH + CO.KG.

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Determining the properties of a zone .................................................................. ..................................................................................... ................... 40

4.6

Division into Ex zones .................................................................. ....................................................................................................................... .....................................................42

4.7

Determining the supply lines.................................................................. ............................................................................................................ ..........................................43

4.7.1

Line ............................................................... ..................................................................................................................................... ........................................................................... ..... 43

4.7.2

Connected system .............................................................. ................................................................................................................... ..................................................... 45

4.7.3

Characteristics of internal systems............................................................ .......................................................................................... .............................. 45

4.8

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Properties of the building ........................................................... ................................................................................................................. ......................................................46

4.8.1

Factors ..................................................................... ..................................................................................................................................... ................................................................ 46

4.8.2

Shielding ................................................................... .................................................................................................................................. ............................................................... 47

4.9

Possible losses .................................................................. .................................................................................................................................. ................................................................47

4.10

Costs ..................................................................... ........................................................................................................................................... ............................................................................ ...... 48

4.11

Selection of measures ................................................................. ...................................................................................................................... .....................................................49

4.12

Printout ................................................................. ....................................................................................................................................... ............................................................................ ...... 51

4.13

Questionnaire ................................................................... ................................................................................................................................... ................................................................52

DEHN Distance Tool/calculation of the separation distance.......................... distance................................................................... ......................................... 53 5.1

General ................................................................. ....................................................................................................................................... ............................................................................ ...... 53

5.2


5.2.1


5.2.2


5.2.3


5.3

Layout of the DEHN Distance Tool ......................................................... ................................................................................................... ..........................................57

5.4

Calculation by means of predefined buildings ............................................................. ................................................................................. .................... 58

5.4.1

Selection of a building ........................................................ ............................................................................................................. ..................................................... 58

5.4.2

Defining building types ................................................................... ............................................................................................................ ......................................... 59

5.4.3

Defining the class of LPS ................................................................. .......................................................................................................... ......................................... 60

5.5

Calculation by means of predefined buildings ............................................................. ................................................................................. .................... 61

5.5.1

Constructing a building ................................................................... ............................................................................................................ ......................................... 61

5.5.2

Defining the class of LPS ................................................................. .......................................................................................................... ......................................... 63

5.6

Editing a lightning protection system (LPS) .................................................................. ...................................................................................... .................... 64

5.6.1

Activating the editing mode ........................................................... .................................................................................................... ......................................... 64

5.6.2

Defining the building view ............................................................. ....................................................................................................... .......................................... 64

5.6.3

Reference point/zero point ........................................................... ..................................................................................................... .......................................... 65

5.6.4

Capture option for conductors .................................................................. ................................................................................................ .............................. 65

5.6.5

Editing conductors on a flat roof ............................................................... ............................................................................................. .............................. 66

5.6.6

Inserting air-termination rods ................................................................... ................................................................................................. .............................. 67 DEHN + SÖHNE GMBH + CO.KG.

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5.6.7

Copying air-termination rods ......................................................... .................................................................................................. ......................................... 68

5.6.8

Connecting air-termination rods ............................................................... ............................................................................................. .............................. 69

5.6.9

Changing the height of air-termination rods...................................................................... ........................................................................... ..... 70

5.6.10

Inserting a ring conductor ............................................................. ....................................................................................................... .......................................... 71

5.6.11

Editing down conductors ............................................................... ......................................................................................................... .......................................... 72

5.6.12

Defining internal down conductors ........................................................... ......................................................................................... .............................. 74

5.6.13

Inserting comments ............................................................ ................................................................................................................. ..................................................... 74

5.7

Calculation of the separation distance .............................................................. ............................................................................................. ............................... 75

5.7.1

Positioning individual measuring points............................................................... .................................................................................. ................... 75

5.7.2

Copying individual measuring points.............................................. points....................................................................................... ......................................... 76

5.7.3

Automatically positioning measuring points ...................................................................... ........................................................................... ..... 77

5.7.4

Shifting the zero potential level ................................................................ .............................................................................................. .............................. 78

5.7.5

Calculating the separation distance .......................................................... ........................................................................................ .............................. 80

5.7.6

Defining the point of strike ............................................................ ...................................................................................................... .......................................... 81

5.8

Results .................................................................. ........................................................................................................................................ ............................................................................ ...... 83

5.8.1

Displaying values ................................................................. ..................................................................................................................... .................................................... 83

5.8.2

Printing ..................................................................... .................................................................................................................................... ............................................................... 84

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Hints & tricks .................................................................... .................................................................................................................................... ................................................................85

5.9.1

Double conductors ............................................................. .................................................................................................................. ..................................................... 85

5.9.2

Example of different buildings............................................. buildings................................................................................................. .................................................... 86

DEHN Air-Termination Tool/calculation Tool/calculation of of the height of air-termination rods ...................................... 89 6.1

General ................................................................. ....................................................................................................................................... ............................................................................ ...... 89

6.2


6.2.1


6.2.2


6.2.3


6.2.4

Note on macros ................................................................... ....................................................................................................................... .................................................... 93

6.3

Layout of the DEHN Air-Termination Tool......................................................... ........................................................................................ ............................... 93

6.4

Calculating the height height of air-termination rods by means of of the protective angle method .............94

6.4.1 Calculation for one air-termination rod with sufficient separation distance from the roofmounted structure ................................................................... .................................................................................................................................. ............................................................... 94 6.4.2 6.5

Calculation with variable lateral distance of the air-termination rod ..................................... 95

Calculating the height height of air-termination rods by means of the rolling sphere method ................. 95

6.5.1 Calculation for one air-termination rod with sufficient separation distance from the roofmounted structure ................................................................... .................................................................................................................................. ............................................................... 95 6.5.2 3

Calculation with variable lateral distance of the air-termination rod ..................................... 96 DEHN + SÖHNE GMBH + CO.KG.

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Calculating the height height of two air-termination air-termination rods by means of the rolling sphere method ..........97

6.6.1 Calculation for two air-termination rods with sufficient separation distance from the roofmounted structure ................................................................... .................................................................................................................................. ............................................................... 97 6.6.2 6.7

Calculation with variable lateral distance of the air-termination rod ..................................... 97

Calculating the height height of four air-termination rods by means of the rolling sphere method .........98

6.7.1 Calculation for four air-termination rods with sufficient separation distance from the roofmounted structure ................................................................... .................................................................................................................................. ............................................................... 98 6.7.2 Calculation for four air-termination rods of different heights with sufficient separation distance 99 6.8 Calculating the height of four air-termination rods on a sloped surface by means of the rolling sphere method ................................................................. ....................................................................................................................................... .......................................................................... .... 100

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8.

9.

6.8.1

Calculation for four air-termination rods on a sloped roof surface ...................................... 100

6.8.2

Calculation for four air-termination rods of different heights on a sloped roof surface ...... 101

DEHN Earthing Tool/calculation of the length of of earth electrodes....................................................... 102 7.1

General ................................................................. ....................................................................................................................................... .......................................................................... ....102

7.2

Access to the calculation ............................................................ ................................................................................................................ ....................................................102

7.2.1

Direct access via the start screen .............................................................. .......................................................................................... ............................ 102

7.2.2

Creating/opening a calculation via the start screen........................................................ .............................................................. ...... 103

7.2.3

Creating/opening a new calculation via the customer and project management................ 105

7.2.4

Notes on macros.................................................................. .................................................................................................................... .................................................. 106

7.3

Layout of the DEHN Earthing Tool .......................................................... .................................................................................................. ........................................106

7.4

Calculation according to a type A arrangement ........................................................... ............................................................................. .................. 107

7.5

Calculation according to a type B arrangement ........................................................... ............................................................................. .................. 107

7.6

Soil resistivity pE ............................................................... .............................................................................................................................. ...............................................................108

General information ................................................................. .............................................................................................................................. ............................................................. 109 8.1

Online update ................................................................... ................................................................................................................................. ..............................................................109

8.2

Number management ................................................................. .................................................................................................................... ...................................................109

8.3

Uninstalling the program............................................................ ................................................................................................................ ....................................................110

8.4

Support/seminars ............................................................ ........................................................................................................................... ...............................................................111

8.4.1

Technical support ............................................................... .................................................................................................................. ................................................... 111

8.4.2

Application support ............................................................ ............................................................................................................... ................................................... 111

8.4.3

Seminars ................................................................... ................................................................................................................................ ............................................................. 111

Figures ............................................................... .................................................................................................................................. .................................................................................... ................. 112

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1. Installation & registration 1.1 System requirements for single-user installation In general, only IBM-compatible PC systems with Microsoft Windows® operating systems are supported. Systems which are not Windows-based (for example, Linux, Apple® or Android® systems) are not supported. Supported operating systems: • Microsoft Windows XP Home® • Microsoft Windows XP Professional® • Microsoft Windows XP Media Center Edition® • Microsoft Windows Vista® (all versions) • Microsoft Windows 7® (all versions) • Microsoft Windows 8® & Windows 8 Pro ® (except "Windows 8 RT®")

Hardware requirements: • Intel®/AMD® processor or compatible - Windows XP®: at least 1500 MHz/Windows Vista®/7®/8®: Vista®/7®/8®: at least

2000 MHz • At least 1 GB RAM for Windows XP®/at least 2 GB RAM for Windows Vista®/7®/8® • At least 500 MB free hard disc space • Screen resolution: 1024x768 pixels (higher recommended) • 32 MB VGA graphics card (64 MB or higher recommended)

Further requirements: • Microsoft Excel® (only required for Excel sheets/calculations)

Recommended network connection for multi-user systems: • 100 MBit/s or higher

1.2 System requirements for server or multi-user installation The DEHNsupport Toolbox software can be installed on a server as a multi-user system: Option 1: Installing the DEHNsupport Toolbox and database on a server, access via network release from the individual work stations (activation from the individual work stations). Option 2: Installing the DEHNsupport Toolbox and database on a server, access via terminal server session/RDP (activation: (activation: in this case, only the number of licences and users registered for the DEHNsupport Toolbox software are decisive).

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Note: DEHNsupport is currently only being tested with original Microsoft terminal services and has not yet been officially released for solutions from other manufacturers. Supported server operating systems: - Microsoft Windows Server 2003® - Microsoft Windows Server 2008® - Microsoft Windows Server 2012® - Microsoft Windows Server 2012 R2® Naturally, standard desktop operating systems can also be used (see general system requirements DEHNsupport Toolbox). Hardware requirements: See general system requirements DEHNsupport Toolbox – These requirements should be considered as minimum requirements especially if the DEHNsupport Toolbox software is installed on a server (the requirements on the server grow in relation with the number of clients). If you have further questions, please do not hesitate to contact our technical hotline. Phone: +49 (0)9181 906 1594

1.3 Installation The installation starts automatically after inserting the CD. If this is not the case, open the directory of the CD drive and click the “DEHNsupport_Setup.exe“ file. The installation can be aborted at any time by clicking the “Cancel“ button . Click the “Next >“ button to get to the next installation step and the “< Back“ button to return to the previous installation step.

Figure 1: Autoplay

Select a setup language. This language is only binding for the installation and can be changed at a later date.


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Figure 2: Selecting the setup language

Some installation notes are displayed.

Figure 3: Installation notes

The “License Agreement” window opens. A printed version of this license agreement is also included in your CD box. Agree to the license agreement and click the “Next >“ button.

Figure 4: Agreeing to the license agreement

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Select the components to be installed in the next window. Activate both components if the DEHNsupport Toolbox software is installed for the first time. If you perform an update from the “Basic Version“ to the “Distance Edition“, the database server does not have to be installed any more.

Figure 5: Selecting the installation components

Select the target directory for the main program. We recommend to use the preset directory. If only the main program is installed, press “Next >“ to start the installation.

Figure 6: Selecting the target directory for the main program


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If the database server is also installed, select the relevant installation directories of the SQL server in the next window. We recommend to use the preset directory.

Figure 7: Selecting the target directory of the SQL server

Click “Install“ to start the installation and the procedure is displayed on a progress bar.

Figure 8: Installation progress

Click “Finish“ to complete the installation. After that, the program does not start automatically. 9



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Figure 9: Completing the installation


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1.4 Installation of a multi-user system (server installation) In case of multi-user installation, the program is installed on a single PC, regardless of whether this PC is used as a work station. All individual work stations access the same program and database. To this end, the connection settings must be changed after the setup so that they apply to each PC and the program directory must be available for all work stations. 1. Install the program on the main computer (standard installation). 2. Do not start the program! Execute the next step first. If you have already started the program before, restart your computer and directly proceed with the next step. 3. Start the database server MySQL 4.0. To ensure that every work station can access the data, make sure that the MySQL server is always started in the background of the main computer. In case of Windows 2000/XP and Vista, it is sufficient to start the WinMySQLAdmin.exe WinMySQLAdmin.exe file once. In case of Windows 98/ME, the file must be executed every time the computer is started (not required in case of 2000/XP and Vista, but not wrong). Open the installation directory of MySQL 4.0 (default: C:\Programs\MySQL 4.0) in the Windows Explorer and select the bin directory. Double-click the WinMySQLAdmin file to start it.

Figure 10: Installation path of the WinMySQLAdmin application

A traffic symbol should be displayed in the task bar. If the user and password are requested, close the window.

Figure 11: Traffic symbol for SQL

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4. Release the program directory so that all work stations can access it. To this end, open the Windows Explorer and select the DEHNsupport installation installation directory (default: C:\Programs\DEHNsupport ). Click the DEHNsupport directory with the right mouse button and select “Release”. Important: Users must be able to change the files! In case of Windows 98 work stations, the release name should consist of maximum 8 characters, for example “DEHNsupp“. 5. Create a link to the program on the work stations. Select START | Execute e.g. on a work station and enter “\\(name of the main computer)\“ e.g. “\\C-2\ “. Now a DEHNsupport folder folder should appear.

Figure 12: Network files

6. Open this folder and click the DEHNsupport.exe file to start the program. To create a l ink on the desktop of the work station, click the DEHNsupport.exe file with the right mouse button and select Send to | Desktop.

Figure 13: Creating a link for DEHNsupport

7. The name of the main computer where the program has been installed is required. If you do not know the name, select START | Execute and enter the word “dxdiag“ on the main computer / SERVER. Click “OK” to confirm.


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Figure 14: DirectX diagnostic tool

8. Start the program on a work station and register it. The following window should now appear (if this is not the case, you can open it via File | Connection): Change the computer name from localhost to to the name of the main computer or server.

Figure 15: Connection settings for the SQL server

Click “Apply“ to close the window. Close DEHNsupport DEHNsupport and open it again.

DEHNsupport should now be executed on the work station and have access to the data of the main computer. To check this, create a customer and project on a work station. These should appear on all work stations.

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Hints:

You should not execute the setup on the work stations! If you execute the setup on a work station, make sure that you do not install the MySQL 4.0 server. Otherwise there is the danger that this work station is a single-user system and has no access to the same projects. The traffic symbol on the main computer must be green. If this is not the case, the installation failed. Try to restart the computer and repeat the installation of the program, if required. As soon as you restart the main computer, the traffic symbol dissappears. This is no problem since the MySQL 4.0 server is installed as a service in Windows 2000/XP and Vista. In case of Windows 98/ME, this service is not installed! For this reason, the traffic symbol must be selected every time the computer is started. If you use the Windows Firewall on on the main computer, select Windows-Firewall | Exceptions in the system control and click the Port... button to release Port 3306. You can enter, for example MySQL 4.0 as a name. Select the type TCP. Observe the area!

1.5 Registration To be able to use the DEHNsupport Toolbox software, you have to register your software version. The registration window automatically opens when starting the software for the first time. The window can also be opened via the relevant menu on the start screen. Select “Help -> Update registration“.

Figure 16: Updating the registration

In case of an upgrade from the DEHNsupport Basic Version to the DEHN Distance Tool, the registration must also be updated to activate this part of the program.


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Figure 17: Registration window

To this end, enter the serial number of your software which you will find on the CD cover and the registration number related to your user identification. You have the following options to register your software version: • Online (this PC must have an Internet connection) • Via phone by calling the indicated phone number • Via Internet by clicking the link highlighted in blue • By sending an e-mail or fax to the indicated address or number Click “ Apply“ to to confirm your entries. If you want to register your software version at a later date, click the “Cancel” button. button.

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2. First steps & operation 2.1 Fundamental information The IEC 62305-3 Ed. 2 international lightning protection standard and the associated national standards, e.g. DIN EN 62305-3 Ed. 2 (VDE 0185-305-3) in Germany or CEI EN 62305-3 Ed. 2 (CEI 81-10/2 Ed. 2) in Italy, require that the risk of a lightning strike be analysed for a structure to be protected. The DEHNsupport Toolbox software from DEHN + SÖHNE allows to easily perform a risk analysis according to the normative requirements. In addition, calculation aids for determining the separation distance and the minimum length of earth electrodes make it easier to plan lightning protection measures. The DEHNsupport Toolbox software also allows to determine the height of a variable number of airtermination rods and to dimension the object to be protected.

2.2 Program surface

Figure 18: Start screen of the DEHNsuppo DEHNsupport rt Toolbox

The start screen of the DEHNsupport Toolbox software provides different options to access the program. A general menu bar (1) can be found in the top section. On the left side of the start screen (2) you can see the individual buttons for the relevant programs. The setup language can be selected in (3). Below this dropdown menu, you can choose the relevant contact address (4). Here you will find the contact details of our relevant international partners and subsidiaries.


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3. Customer and project management The customer and project management is an integral part of the DEHNsupport Toolbox software and allows to create, delete, copy, export and import customers and projects. To get to the customer and project management, select “File -> Open project“ in the start screen.

Figure 19: Customer/proj Customer/project ect management

3.1 Layout of the customer and project management

Figure 20: Overview of the customer/p customer/project roject management

The left side of the window gives an overview of all previously created customers and the associated projects. A search function was integrated to make it easier to find a certain customer or project in case of large data volumes (Figure 21). 21). Since projects are created for a single customer, it is not possible to create a project without a customer. 17



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Figure 21: Customer and project search

The right side of the window shows all information on the relevant customer or the selected project. These can be edited at any time except for the calculation basis selected for a project.

3.2 Description of the individual toolbars:

Figure 22: Customer symbols

Create a new customer Delete a selected customer Export a selected customer and all projects related to this customer Import a customer with the associated projects

Figure 23: Project symbols

Create a new project Copy a selected project Delete a selected project Export a selected project Import projects for a selected customer


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Figure 24: Calculation symbols

Create a new calculation Delete a selected calculation

3.3 Creating a new customer

Figure 25: Creating a new customer

To create a new customer, click the white sheet symbol under Customer. Now customer data can be entered on the right side. The customer number is automatically generated and can be changed at a later date. The most important customer data are listed in the printouts of the risk analysis and the calculation of the separation distance. The “Notes” field does not apear in the printout.

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Figure 26: Selecting a customer’s postal code

In the “Country“ field you can activate a ground flash density database. To select the ground flash density, click the symbol with the three dots in the “Postal code” field.

Figure 27: Selecting the ground flash density for customers

In the opening window, the standard basis can be predefined for the projects of a customer. This basis can be changed for the individual projects. Select a country to activate the associated ground flash density database. If you enter a postal code, the associated places are displayed. Double-click the relevant place to DEHN + SÖHNE GMBH + CO.KG.

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confirm. The place, number plate, ground flash density and thunderstorm days per year are automatically displayed. Click “Apply“ to save these data for a customer and to integrate them in the customer and project management. To date, ground flash density databases are not available for all countries, but they are constantly being extended and integrated in free updates. If there is no database for your country, data must be entered manually. Remove the check mark in the “Resize“ box (top centre) to enlarge the ground flash density map.

3.4 Creating a new project

Figure 28: Creating a new project

To create a new project, click the white sheet symbol under Project. Now project data can be entered on the right side. The project number is automatically generated and can be changed at a later date. The most important project data are listed in the printouts of the risk analysis and the calculation of the separation distance. The “Notes” field does not appear in the printout.

Figure 29: Selecting the basis of calculation

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When creating a project, you are requested to select the relevant basis of calculation for the risk analysis and the calculation of the separation distance. This selection cannot be changed anymore after performing a risk analysis.

Figure 30: Selecting a postal code for a project

In the “Country“ field you can activate a ground flash density database. To select the ground flash density, click the symbol with the three dots in the “Postal code” field .

Figure 31: Selecting the ground flash density for a project


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Check in the opening window whether the correct standard basis and version are displayed (1). Select a country to activate the associated ground flash density database. If you enter a postal code (2), the associated places are displayed. Double-click the relevant place to confirm. The place, number plate, ground flash density and thunderstorm days per year are automatically displayed. Click “Apply“ (4) to save these data for a project and to integrate i ntegrate them in the customer and project management. To date, ground flash density databases are not available for all countries, but they are constantly being extended and integrated in free updates. If there is no database for your country, data must be entered manually. Remove the check mark in the “Resize“ box (top centre) to enlarge the ground flash density map.

3.5 Creating a new calculation

Figure 32: Creating a new calculation

To create a new calculation, highlight the relevant project and click the white sheet symbol under Calculation. Select the relevant calculation from the opening window. When calculating the ri sk, the project data are displayed once again before the calculation is started. Make sure that you have selected the correct basis of calculation. The basis of calculation cannot be changed at a later date.

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4. DEHN Risk Tool/risk analysis 4.1 General A risk analysis is performed to assess the potential risks for a structure. Based on this analysis, specific measures can be taken to reduce the risks. The aim is to select economically sound protection measures adapted to the building’s properties and type of use. The risk analysis does not only allow to determine the class of LPS, but also to develop a complete protection concept including the necessary LEMP protection measures. A risk analysis allows to reduce the existing risk to a tolerable risk RT.

4.2 Access to the calculation 4.2.1

Direct access via the start screen

This is the fastest way to start a new calculation. In this case, the calculation is not saved under an existing project, however, it can be assigned to a project at a later date.

Figure 33: Direct access to the risk analysis

To start the calculation, click the DEHN Risk Tool symbol and select “Direct program access” from the opening window. As an alternative, you can directly access the program via the menu bar. To this end, select “File -> New calculation -> Risk analysis“.


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Figure 34: Direct access via the menu bar

4.2.2

Creating/opening a calculation via the start screen

Calculations can be opened or created directly via the start screen. Click the DEHN Risk Tool symbol and select “Create/open a new/existing project“ from the opening window.

Figure 35: Creating a new risk analysi analysiss

In the next step, a new customer can be created in the displayed window. This customer is saved in the customer and project management and can be edited at a later date. Click “ Next“ to continue.

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Figure 36: Creating a new customer for a risk analysis

In the next window, the relevant project data must be entered. If you want to calculate the separation distance at a later date, the selected standard will be displayed. This standard cannot be changed anymore after performing a risk analysis. Click “ Next“ to continue.

Figure 37: Creating a new project for a risk analysis

If a customer has already been created and you want to save a calculation for this customer, select the “Select existing customer“ tab and click “ Next“. DEHN + SÖHNE GMBH + CO.KG.

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Figure 38: Selecting an existing customer for a risk analysis

You can now create a new project for the relevant customer or select an existing project. If one or more calculations have already been created for a project, click “Edit“ to open them.

Figure 39: Editing an existing risk analysis

4.2.3

Creating/opening a calculation via the customer and project m anagement

As an alternative to the direct access via the start screen, calculations can also be created via the customer and project management. For more detailed information, please refer to Customer and project management . 27



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Selecting the ground flash density

Enter the relevant project data In the opening window. The project number is automatically generated and can be changed at a later date. The most important project data are listed in the printout of the risk analysis. The “Notes” field does not appear in the printout.

Figure 40: Editing project data

The most important aspect for a risk analysis is the selection of the relevant basis of calculation. This selection cannot be changed anymore after performing a risk analysis.

Figure 41: Selecting the basis of calculation

In the next step, determine the ground flash density for the project. Select the relevant country and click the symbol with the three dots in the “Postal code” field.

Figure 42: Opening the ground flash density database

Check in the opening window whether the correct standard basis and standard version are displayed (1). Select a country to activate the associated ground flash density database. If you enter a postal code (2), the DEHN + SÖHNE GMBH + CO.KG.

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associated places are displayed. Double-click the relevant place to confirm. The place, number plate, ground flash density and thunderstorm days per year are automatically displayed. Click “Apply“ (4) to save these data for a project and to integrate i ntegrate them in the customer and project management. To date, ground flash density databases are not available for all countries, but they are constantly being extended and integrated in free updates. If there is no database for your country, data must be entered manually. Remove the check mark in the “Resize“ box (top centre) to enlarge the ground flash density map.

Figure 43: Determining the ground flash density for a risk analysis

Click “Apply” to confirm your project data a nd select the risks to be considered. These risks can be changed

during the calculation. At least one risk must be activated. Click “Apply“ to continue.

Figure 44: Selecting the risks to be considered

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Opening an old project (version 2.0)

As soon as a calculation from previous software versions is opened and several versions (protected and unprotected) are created for an object, an additional window appears.

Figure 45: Window for assigning buildings to one another

In this window, an unprotected version must be assigned to the relevant solutions. Thus, the two calculations are compared.

Figure 46: Assigning the unprotected version


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4.3 Layout of the DEHN Risk Tool

Figure 47: Start screen of the DEHN Risk Tool

Menu bar Project buttons General project buttons Project tab The following risks are graphically displayed at the lower edge of the program window: • R1: Risk of loss of human life • R2: Risk of loss of service to the public • R3: Risk of loss of cultural heritage

For the risk of economic loss, click the “Costs“ button. On the right side there are three project tabs: 1. Project data (the data of the currently opened project are displayed) 2. Evaluation (the total risk and the risks in the zones are graphically displayed) 3. Results (the most important results are displayed) 31



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Notes on the menu bar

Figure 48: “File“ menu item of a risk analysis

The “File“ menu item includes a number of standard commands. Compared to previous program versions, data is no longer automatically saved in the risk analysis. This function can be activated by clicking “Automatic save” and can be deactivated at a later date. In addition, you can open the questionnaire or export the calculated values to an Excel sheet via “Excel/CSV-E xport“.

Figure 49: "Edit" menu item of a risk analysis

Here you can directly access some important elements of a risk analysis or edit them at a later date. As an alternative, you can click the relevant project buttons to get to the individual elements.

Figure 50: "Language" menu item of a risk analysis

In the “Language“ menu item, you can change the program language at any time during the calculation. DEHN + SÖHNE GMBH + CO.KG.

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4.3.2


Description of the project buttons

Click this button to get an overview of the building data. Here you can define the building dimensions, ground flash density Ng and the associated environmental factor Cd.

Here you can divide the building into zones. For these zones, individual settings can be made and measures can be taken. Note: In general, at least two zones are created, namely the outer zone LPZ 0B and the inner zone LPZ 1.

Click this button to assign individual zones, if any, to an Ex zone with the associated Ex time. This option is only available for calculations according to edition 2 of the DIN EN 62305-2 (VDE 0185-305-2) 0185-305-2) standard. This symbol is not displayed for any other basis of calculation.

Here you can select detailed parameters for the supply lines of the building, the connected systems and the line shields. The existing lines in the zones must be defined.

Click this button to enter the relevant factors (e.g. contact resistance of the soil, protection against electric shock, fire load) for the building and its surroundings. If there are several zones, these factors must be entered for every zone.

Click this button to define the risk factors or potential losses for the individual zones of the building. Losses are subdivided into human life, service to the public, cultural heritage and economic loss. 33



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Click the “Costs” button to determine the economic loss of the current project. If the two versions

(unprotected and protected) are not included in the calculation, they are automatically created.

Click this button to automatically create a protected version for your unprotected version. Select specific protection measures based on the displayed individual risks to minimise the risk. Note: Active program fields are highlighted in blue. 4.3.3

Information on the general project buttons

Figure 51: Symbols of the general project buttons

Opening the questionnaire Selection of the risks to be considered Printing the calculation performed Exporting the results to an Excel/CSV file Opening the help Saving the calculation


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4.3.4 Additionally stored information

Notes and additional information on many calculation steps and parameters are included in this program. Click the button to display them. or they appear as a popup window as soon as the mouse pointer is situated above the relevant point.

Figure 52: Popup containing additional information

4.4 Entering the basic data of the building

Figure 53: Entering the basic data of an object

At the beginning of the risk analysis, the name of the building should be changed. To this end, click the “Edit objects“ button (1). The name can also be changed during the calculation. Data concerning the thunderstorm days per year, etc. are automatically taken from the customer and project management. Click the “Simple structure“, “Building with high point“ or “Complex stucture“ button to determine the collection areas of the building. In a last step, select the “Location factor of the structure“ to define the surroundings of the building.

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Editing objects

Figure 54: Editing objects

In this window, the name of an object can be changed. To this end, click the relevant name. This name is now highlighted and can be changed. Several buildings can be created for a single project. This may be required for e.g. hospitals if calculations are required for several buildings.

Figure 55: Symbols of “Editing objects“

Creating a new object Creating a new calculation for an object Copying an object/version Deleting a selected object/version 4.4.2

Determining the collection areas of a building

There are three options to determine the collection areas of a building. The selected version is coloured after it is entered.


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Figure 56: Simple structure

Enter the length, width and height of “simple structures“ (in [m]). These data can also be printed. Click the “View“ tab to display the existing collection areas.

Building with high point

Figure 57: Building with high point

In case of a building with high point, the highest point of the building must be entered in addition to the length, width and height. These data can also be printed. Click the “View“ tab to display the existing collection areas.

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Complex structure

Figure 58: Complex structure

This tool can be used to plan complex structures. The two buttons on the right side allow to create or delete parts of the structure (e.g. wings, annexes or floors). Click the relevant cell of the table to exactly adapt these parts. The cells X and Y show the position of the object from the zero point. In many cases, it is advisable to leave X and Y at 0 for the first object, e.g. the ground floor of the structure. Thus, parts of the structure with X and Y values created at a later date can be relatively easily added to the first part of the structure. It is recommended to name the elements of the structure to facilitate work in case of complex projects. Note: Please note that the heights of these elements cannot be specified relative to a floor underneath, but must be specified absolute, that is from the ground level (+/- 0.00 m). At the same time, the collection areas for lightning strikes to a structure Ad of the relevant parts of the structure resulting from the entries are graphically displayed. The areas of Ad and Am (collection area for flashes near the structure) are also displayed in square metres down right. The graphic is always automatically centred and enlarged as much as possible, that is until the collection area extends the full length or width of the window. This graphic of the structure and its collection areas as well as the table with the building dimensions can be printed. General information such as the project number and name of the structure also are also listed on the printout.


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4.5 Entering the zones 4.5.1

Division of a building into zones

Figure 59: Entering the existing zones

Every building can be subdivided into different zones (areas). A single zone (one zone) can be selected. In this case, only the outer zone and the inner zone of the building are considered. However, buildings can also be subdivided into several lightning protection zones since special zones (areas) can be defined within a lightning protection zone, for example due to the soil properties (contact resistance) and the lines entering the zone. In this case, the building is mainly divided into lightning protection zones which can be subdivided into zones. Note: In general, at least two lightning protection zones are created, namely LPZ 0B and LPZ 1.

Figure 60: Buttons for dividing a building into zones

Lightning protection zones can be created via the three buttons underneath the hierarchical view. Any number of zones (areas) can be defined. Lightning protection zones/zones can be deleted at any time. It must be observed that lightning protection zones cannot be deleted as long they are subdivided into zones. It is thus excluded that zones for which measures or factors have been entered are inadvertently deleted.

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Example of dividing a building into zones:

Figure 61: Example of dividing a building into zones

More detailed information on the lightning protection zone concept can be found in our Lightning Protection Guide. 4.5.2

Determining the properties of a zone

In the next window, the properties of the relevant zone can be defined more exactly according to the risks selected. A separate tab is created for each zone.

Figure 62: Properties of a zone


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The values entered in this window are used for calculating the possible loss. For example, in case of “L1 Human life“, the time for which persons are present in the zone (hours/year) and the number of persons in the zone must be entered. If this is unknown, simply leave these fields empty. empty. In this case, the program performs a worst case analysis. The latest EN 62305-2 standard includes a cost assessment for calculating the economic loss.

Figure 63: Access to the cost assessment

The cost assessment can only be performed if the risk R4 is activated. This assessment allows a standardcompliant calculation of the costs based on reference values such as the volume of the zone or the number of employees in the zone.

Figure 64: Cost assessm assessment ent for economic loss

A table can be displayed to get an overview of which values in the relevant zones are assigned to the individual types of loss. Click the relevant button in the lower edge of the window to open these tables. The values cannot be changed.

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Figure 65: Overview of the loss values entered

4.6 Division into Ex zones If Ex zones are located in individual zones of your building, the risk in this area can be exactly determined according to Supplement 3 of the German DIN EN 62305-2 standard. To this end, Ex zones as defined in the standard must be assigned. The following table gives an overview of the normative definitions. Ex zone

Definition

Zone 0

Place in which an explosive atmosphere consisting of a mixture of air and flammable substances in the form of gas, vapour or mist is present continuously or for long periods or frequently.

Zone 1

Place in which an explosive atmosphere consisting of a mixture of air and flammable substances in the form of gas, vapour or mist is likely to o ccur in normal operation occasionally.

Zone 2

Place in which an explosive atmosphere consisting of a mixture of air and flammable substances in the form of gas, vapour or mist is not likely to occur in normal operation but, if it does occur, will persist for a short period only.

Zone 20

Place in which an explosive atmosphere, in the form of a cloud of combustible dust in air, is present continuously, or for long periods, or frequently.

Zone 21

Place in which an explosive atmosphere in the form of a cloud of combustible dust in air, is likely to occur in normal operation occasionally.

Zone 22

Place in which an explosive atmosphere in the form of a cloud of combustible dust in air is not likely to occur in normal operation but, if it does occur, will p ersist for a short period only. Table 1: Definition of Ex zones

Select the “Ex zones“ menu item to enter the relevant Ex zone for the individual areas. In addition, the relevant time “t ex“ must be entered. This time defines the duration of the presence of an explosive atmosphere. For more detailed information on the Ex times, please refer to the following table and the associated notes.


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Figure 66: Selecting an Ex zone and the associated time

Mixture of air and flammable substances

Duration of the presence presence of a dangerous dangerous explosive atmosphere continuously, for long periods or frequently (> 50% of the operating 1) time)

occasionally (< 50% of the operating 2) time)

Not likely to occur or for a short period 3) (< 30 min/year) or (> 12 x t ex /year)

Gas, vapour, mist

Zone 0

Zone 1

Zone 2

Dust

Zone 20

Zone 21

Zone 22

4)

Table 2: Reference values for the presence of a dangerous explosive atmosphere

[2] Kompendium Explosionsschutz, Dr. Dyrba, Carl Heymanns Verlag

NOTE 1 Continuously, for long periods or frequently: Most of the time, with regard to the effective operating time (frequency > 50% of the operating op erating time) DIN EN 62305-2 supplement 3 (VDE 0185-305-2 supplement 3):2013-xx 12 NOTE 2 Occasionally: Daily, duration of about 30 minutes, however < 50% of the operating time of the installation. If the duration (presence of a dangerous explosive atmosphere) is unknown, a duration < 50% of the operating time is to be expected. NOTE 3 For a short period: A couple of times a year for < 30 minutes (e.g. once a month) NOTE 4 Worst case: 12 x 29 min  348 min NOTE 5 The duration of the presence of a dangerous explosive atmosphere can be found in the explosion protection document. NOTE 6 In addition to the references [2], there are further documents from which the frequency and duration of the presence of a dangerous explosive atmosphere can be concluded.

4.7 Determining the supply lines 4.7.1

Line

Click “Supply lines“ to enter the properties of incoming and outgoing lines (e.g. power supply) of the building and the associated internal systems (e.g. power supply system) for the object to be protected. It

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must be observed that the properties of internal systems must be entered for every type ty pe of conductor and for each zone (subdivided area).

Figure 67: Changing the name of a supply line

Click the “Edit conductors“ button to add new lines and copy or delete existing lines. Then, click “Conductor“ to describe the properties of the lines until they enter the building.

Figure 68: External properties of a supply line


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4.7.2


Connected system

If another building is connected via the supply line, click the “System connected “ button to enter the dimensions and surroundings of the building. Proceed the same way as for entering the dimensions of the building.

Figure 69: System connected

4.7.3

Characteristics of internal systems

This button allows to enter the installation conditions of the relevant conductor in the individual zones. A separate tab is created for each zone.

Figure 70: Characteristics of the internal systems of a supply line

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4.8 Properties of the building 4.8.1

Factors

Figure 71: Properties of the building, “Factors“ button

Click the “Factors“ button to define the relevant properties of each zone created. If the existing soil properties are not listed, enter the value of the contact resistance. The most important factor for the calculation is the risk of fire. This means that the relevant zone is assessed according to the fire load. If the relevant tex time has been entered under the “Ex zones“ menu item, this function is deactivated.

Figure 72: Selecting the risk of fire

Risk of fire

Low Ordinary High

Specific fire load

< 400MJ/m² 400MJ/m² - 800MJ/m² > 800MJ/m² Table 3: Specific fire load


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4.8.2

Shielding

Figure 73: Shielding measures for a building and the zones

Click the “Shielding” button to enter information on already existing shielding measures. The first three

selection options affect the entire building. In the lower section, internal shielding measures can be selected for the existing zones.

4.9 Possible losses

Figure 74: Possible losses

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Click the “Losses“ button to define the risk factors and potential losses for the individual zones of the

building. Losses and factors are can be specified for human life, service to the public, cultural heritage and economic value. If damage to a building caused by a lightning strike is likely to extend to neighbouring buildings or the surroundings (e.g. chemical or radioactive emissions), additional losses should be considered when assessing the total loss.

Figure 75: Activating “Additional loss”

4.10 Costs

Figure 76: Access to the calculation of costs

If no protected version has been created at the beginning of the risk analysis, click the “Costs“ button to automatically create this version. The opening window shows the already entered costs of the individual zones which can be changed here. In addition, the interest rates, maintenance rates, amortisation time, amortisation rates and the costs for protection measures can be entered.


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Figure 77: Entering the economic loss

4.11 Selection of measures

Figure 78: Access to measures

If no protected version has been created at the beginning of the risk analysis, click “Measures“ to automatically create this version. In the opening window, protection measures for reducing the total risk can be specifically selected. To this end, you can select the calculated risks top right. Click the “Evaluation“ tab underneath the type of risk to get an overview of the individual risks which influence the total risk. This overview is available for the total risk and for all zones created. Thus, protection measures can be specifically selected for the individual zones according to the relevant risk. The blue line in the diagrams stands for the acceptable risk. 49



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Figure 79: Selecting measures

The buttons in the top section allow to select protection measures which reduce the relevant risks. In this example, the components RB and RV significantly exceed the acceptable risk. Click the buttons RB and RZ to select the protection measures for these risks (e.g. lightning protection system).

Figure 80: Buttons for reducing the risk

The total risk of the building is displayed in the lower left corner. Your building is sufficiently protected if the residual risk is below 100%.

Figure 81 Residual risk


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4.12 Printout

Figure 82: Print window

Select the “File -> Print“ menu item or click the ”Print“ symbol to open the “Print“ window. If only one

protection option has been created, the program automatically defines an unprotected and a protected version. Moreover, the language for the printout pr intout can be selected and company logos can be inserted. There are two types of printout. In a short printout, all parameters and building data entered are printed. Only little additional information on the individual calculation parameters is provided.

Figure 83: Selection options for a long printout

The long printout allows to select individual sections for the printout. A lot of additional a dditional information on the individual calculation parameters is listed. Both types of printout can be directly printed or saved in different file formats. Moreover, they can be edited.

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4.13 Questionnaire

Figure 84: Questionnaire window

Select the “File -> Questionnaire“ menu item or click the “Questionnaire“ symbol to open the questionnaire

window. Here you can define the relevant standard basis and version for the calculation. Moreover, the language, the risks to be considered and the type of printout can be selected.

Figure 85: Importing the project data in the questionnaire

Place a check mark at “Import project data in questionnaire“ to import the basic data of the unprotected version to the questionnaire after performing a calculation. These basic data can be submitted to the operator to let him confirm that these data can be used as calculation basis. Both versions can be directly printed or saved in different file formats. Moreover, they can be edited. .


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5. DEHN Distance Tool/calculation of the separation distance 5.1 General To avoid damage caused by lightning strikes, specific protection measures must be taken for the objects to be protected. Owing to the ever increasing scientific knowledge in the field of lightning research, the method of calculating the separation distance has been constantly further developed. According to the latest IEC 62305-3 standard, roof-mounted structures should be located in the protected zone using airtermination rods or elevated air-termination systems (elevated ring conductor or spanned cables) while maintaining the calculated separation distance s.

In addition to the conventional calculation formula for determining the partitioning coefficient kc, more precise calculations can be made according to the standard. The calculation of the separation distance by means of the DEHN Distance Tool software is based on nodal analysis, a method for network analysis used in electrical engineering. A constant earthing resistance is assumed for the calculation (type B earth electrode). Junctions and edges in the conductor routing are considered as potential points of strike in the calculation. After calculating the separation distance, the separation distance s is displayed in cm for these points.



This option is the fastest way to start a new calculation. However, the calculation is not saved under an existing project, but it can be assigned to a project at a later date.

Figure 86: Direct access to the Distance Tool

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To start the calculation, click the DEHN Distance Tool symbol and select “Direct program access” in the opening window. As an alternative, the program can be directly accessed via the menu bar. Select “File -> New calculation -> Separation distance“.

Figure 87: Direct access to the calculatio calculation n of the separation distance distance via the menu bar

5.2.2


Calculations can also be opened or created directly via the start screen. To this end, click the DEHN Distance Tool symbol and select “Create/open a new/existing project“ in the opening window.

Figure 88: Creating a new calculation of the separation distance distance

In the next step, a new customer can be created in the displayed window. This customer is saved in the customer and project management and can be edited at a later date. Click “ Next” to continue.


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Figure 89: Creating a new customer for calculating the separation distance

In the next window, the relevant project data must be entered. If you want to perform a risk analysis or calculate the separation distance at a later date, you can now select the relevant standard which can be changed before performing a risk analysis. Click “ Next“ to continue.

Figure 90: Creating a new project for calculating the separation distance

If a customer has already been created and you want to save a calculation for this customer, select the “Select existing customer“ tab and click “Next“ to continue. 55



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Figure 91: Selecting an existing customer for calculating the separati separation on distance

Now you can create a new project for the relevant customer or select an existing project. If one or more calculations have already been created for a project, click “Edit“ to open them.

Figure 92: Editing an existing calculation of the separation distance distance

5.2.3

Creating/opening a calculation via the customer and project m anagement

As an alternative to the direct access via the start screen, calculations can also be created via the customer and project management. For more detailed information, i nformation, please see Customer and project management . DEHN + SÖHNE GMBH + CO.KG.

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5.3 Layout of the DEHN Distance Tool After starting the Distance Tool program, the main screen of the software appears. The following functions are available on this screen:

Figure 93: Start screen of DEHN Distance Tool

Menu bar Building types: Selection of the building type Zoom: Zooming in, zooming out, adapting Turn: Turning the building Select class of LPS: Defining the class of LPS Adapt LPS: Inserting/editing down conductors, meshes and air-termination rods Calculate LPS: Activating the calculation mode and selecting the material factor km Display values: Result is displayed in different views Print: Activating the print function (different views can be selected) Progress bar: Description of the next steps

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5.4 Calculation by means of predefined buildings 5.4.1

Selection of a building

To facilitate the user’s work and to save time, the Distance Tool software includes predefined building

types which are frequently used in practice. The building type is selected in the toolbar on the right side of the screen. The following building types are predefined: Flat-roofed building: Rectangular building

Building with annex

Building with courtyard

U-shaped building

Building with corridor

Building with gable roof: Gable roof with flat-roofed annex

Gable roof with gable-roofed gable-roofed annex

Gable/hipped roof

Gable roofs merging into one another another Gable roof with flat roof roof


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5.4.2


Defining building types

The following steps must be observed when creating a building according to predefined building types: 1. Double-click the relevant building.

Figure 94: Selecting a building type

2. Enter the building dimensions in the relevant r elevant fields. 3. Click "OK" to confirm.

Figure 95: Entering the building dimensions for a predefined building building

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A 3D building without LPS (Lightning Protection System) is displayed.

Figure 96: 3D building without lightning protection system

5.4.3

Defining the class of LPS

The class of LPS forms the basis for calculating the separation distance. The EN 62305-3 standard specifies four different classes of LPS: -

Class of LPS I Class of LPS II Class of LPS III Class of LPS IV

The class of LPS (highest class of LPS: class of LPS I) defines the lightning current parameters, mesh size, down conductor spacing, radius of the rolling sphere and interception probability. The following parameters are defined by the class of LPS:

Class of LPS

Typical down conductor spacing [m]

I II III IV

10 10 15 20

Mesh size [m]

Radius of the rolling sphere [m]

Current parameters (peak value in kA)

Interception probability in %

5x5 10x10 15x15 20x20

20 30 45 60

200 150 100 100

99 97 91 84

Table 4: Parameters of the relevant class of LPS


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5.5 Calculation by means of predefined buildings 5.5.1

Constructing a building

A building can be constructed using the predefined building types. The following steps must be observed: 1. Double-click the relevant building.

Figure 97: Constructing a building

2. Enter the building dimensions. 1. Enter the dimensions of the main building. 2. Define the annexes. a nnexes. 3. Define the roof-mounted structures on the main m ain building. 4. Define the dimensions/roof-mounted dimensions/roof-mounted structures for the annexes. Note: Roof-mounted structures are only graphically displayed. They do not influence the position of the meshes, in other words, conductors can be routed through a roof-mounted structure. These conductors must be displaced. In addition, it is not possible to position air-termination rods on the displayed roofmounted structures.

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Figure 98: Entering the building data

A 3D building without LPS (Lightning Protection System) is displayed.

Figure 99: 3D building with roof-mounted structure without lightning protection system


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To make it easier to enter the individual building parts, the below graphic shows the positions of the annexes and their relevant lengths and widths.

Figure 100: Position of the individual annexes

5.5.2

Defining the class of LPS

The class of LPS forms the basis for calculating the separation distance. The EN 62305-3 standard specifies four different classes of LPS: -

Class of LPS I Class of LPS II Class of LPS III Class of LPS IV

The class of LPS (highest class of LPS: class of LPS I) defines the lightning current parameters, mesh size, down conductor spacing, radius of the rolling sphere and interception probability. A table with the individual parameters can be found in 5.4.3.

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5.6 Editing a lightning protection system (LPS) 5.6.1 Activating the editing mode

The DEHN Distance Tool software includes the “ Adapt LPS" option which allows to adapt the calculation of the separation distance as exact as possible to the real local conditions. Observe the following steps to activate the editing mode: 1. Click "Adapt LPS".

Figure 101: “Adapt LPS” button

5.6.2

Defining the building view

Before positioning the air-termination system and down conductors, the correct building view must be selected. Select the "Part of building" option to define the part of the building to be considered. The "View" option allows to select the side, front and top view. Click the "Adapt LPS" button and proceed as follows: 1. Select a building part. 2. Define a building view.

Figure 102: Selecting the views for adapting the LPS


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5.6.3


Reference point/zero point

To be able to exactly determine the position of air-termination conductors, down conductors and airtermination rods, the x/y coordinates are displayed in the "Adapt LPS" mode. The absolute zero point is always located in the lower left corner.

zero point

Figure 103: Zero point and coordinate system system

5.6.4

Capture option for conductors

To be able to "capture" conductors, a capture option was integrated in the calculation tool.

Figure 104: Capture option for conductors

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As soon as the cursor points to the line, the following symbol appears:

When the lines are connected, the following is displayed:

5.6.5

Editing conductors on a flat roof

Due to local conditions, the mesh sizes required by the standard (e.g. class of LPS I = mesh size 5.0 x 5.0 m) cannot always be maintained. If the mesh is changed, the impedance ratios of the air-termination system equally change. 1. Highlight a conductor. 2. Click the right mouse button. 3. Select "Join / delete conductor".

Figure 105: Deleting a conductor


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5.6.6


Inserting air-termination rods

Air-termination rods are an integral part of a lightning protection system. Their function is to prevent direct lightning strikes to the volume to be protected. Air-termination rods must be designed in such a way that uncontrolled lightning strikes to the building/structure to be protected are prevented. When installing an air-termination rod, the separation distance from the volume to be protected, e.g. roofmounted structures, must be maintained. The required separation distances are often extremely large since in the majority of cases the lightning current is not distributed between the air-termination rod and the connection point to the mesh system. 1. Move the cursor in the top view of the building to the relevant location. 2. Click the right mouse button. 3. Select "Air-termination rod".

Figure 106: Positioning an air-termina air-termination tion rod

4. Enter a value and confirm.

Figure 107: Defining the height of an air-termination rod

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5. Insert a connecting conductor conductor between the air-termination ai r-termination rod and the air-termination mesh. 5.1. Highlight the relevant air-termination rod. 5.2. Click the right mouse button. 5.3. Select “Join conductor“.

Figure 108: Inserting a conductor for an air-terminati air-termination on rod

Drag the connecting conductor to the selected conductor and confirm.

Figure 109: Inserted air-termination rod

5.6.7

Copying air-termination rods

The “Copy air-termination rod” option makes it considerably easier to position several air-termination rods.


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Move the cursor to the relevant air-termination rod, click the right mouse button and select "Copy airtermination rod". When positioning several air-termination rods, the "Shift“ key must be pressed at the same time.

Figure 110: Copying a selected air-termination rod

5.6.8

Connecting air-termination rods

Air-termination meshes installed on the roof surface spread the lightning current at a large scale. However, roof-mounted structures often interrupt these meshes. To be able to nevertheless distribute the lightning current, air-termination rods are installed in the form of air-termination masts and their tips are interconnected. This can also be simulated sim ulated in the Distance Tool software. 1. Position the cursor on the relevant air-termination rod. 2. Click the right mouse button. 3. Select "Connect air-termination rod tips". 4. Drag the conductor to the relevant air-termination rod. 5. Click the air-termination rod.

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Figure 111: I nterconnectin nterconnecting g the tips of air-termination rods

5.6.9

Changing the height of air-termination rods

The height of an air-termination rod can be changed at a later date in just a few steps. 1. Position the cursor on the relevant air-termination rod. 2. Click the right mouse button. 3. Select “Change height of the air-termination rod ".

Figure 112: Changing the height of an air-termination rod


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5.6.10 Inserting a ring conductor

Especially in case of very high buildings, large separation distances must be maintained since the conductors are routed from the top edge of the building to the zero potential level. These distances can be reduced by installing an intermeshed network of air-termination conductors in the upper 20% of the building façade to ensure that the lightning current is spread at a large scale. 1. Click the "Adapt LPS" button and select the side view of the building. 2. Position the cursor in the graphic, click the right mouse button a nd select “Ring conductor".

Figure 113: Inserting a ring conductor

1. Enter the position of the ring conductor (the height of the ring conductor always refers to ground level (+/- 0.00 m). 2. Click "OK" to confirm.

Figure 114: Height of a ring conductor

In the side view, ring conductors are displayed in green colour. 71



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5.6.11 Editing down conductors

The EN 62305-3 standard specifies typical down conductor distances. Due to local conditions, these distances can be maintained only in very few cases. The down conductors are often arranged at the edges of a building and near downpipes. Moreover, the number of down conductors is reduced or increased for some buildings. These measures also change the lightning current distribution. This increases or reduces the separation distances. To be able to realistically simulate the arrangement of down conductors, the Distance Tool software allows to change the position of down conductors. Moreover, down conductors can also be deleted or inserted. Shifting down conductors 1. Click the "Adapt LPS" button. 2. Change to the side/front view of the building. 3. Select the relevant down conductor by means of the cursor. 4. Keep the cursor pressed and shift the down conductor.

Figure 115: Shifting down conductors


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Inserting down conductors 1. Click the "Adapt LPS" button. 2. Change to the side/front view of the building. 3. Select a ring conductor on the metal capping of the roof parapet by means of the cursor. 4. Click the right mouse button. 5. Select "Join conductor".

Figure 116: Positioning a down conductor

6. Drag the conductor to the zero potential level (or a little bit below the zero potential level).

Figure 117: Inserting a down conductor

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5.6.12 Defining internal down conductors

The standard recommends to install internal down conductors for widespread buildings due to the large conductor lengths. This improves the lightning current distribution in case of a lightning strike, thus reducing the required separation distances. The Distance Tool software allows to insert internal down conductors. 1. Click the "Adapt LPS" button. 2. Change to the top view of the building. 3. Position the cursor in the top view on the relevant point of the internal down conductors. 4. Click the right mouse button. 5. Select "Internal down conductor".

Figure 118: Positioning an internal down conductor

In the top view internal down conductors are displayed in the form of a blue circle and in the side view in the form of a blue line. 5.6.13 Inserting comments

The "Comment" option allows to add comments to a calculation which also appear in the printout (2D). The comment fields can be enlarged via the small grey box underneath the field.


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Proceed as follows: 1. Click the "Adapt LPS" button. 2. Select a view. 3. Position the cursor (not necessarily on a line). Click the right mouse button and select "Comment". 4. Double-click the text field to edit the text. 5. Position the text field via drag and drop.

Figure 119: Inserting a comment

5.7 Calculation of the separation distance 5.7.1

Positioning individual measuring points

If a lightning protection system or down conductors are installed on a building, the conductors are often routed across installations inside/outside the building. Especially in this case, the separation distances must be maintained to prevent uncontrolled flashover. The separation distances are reduced due to the short conductor lengths from the point of strike to the zero potential level. To be able to calculate the separation distance at the critical points, e.g. outdoor lighting system at a facade, measuring points must be positioned in the Distance Tool software. In all views, measuring points are displayed in the form of a green circle.

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1. Click the "Adapt LPS" button. 2. Select the side view. 3. Select a line, position the cursor at the relevant location and click the right mouse button. 4. Select "Measuring point".

Figure 120: Positioning individual measuring points

5.7.2

Copying individual measuring points

The "Copying measuring points" option makes it considerably easier to position several measuring points. 1. Click the "Adapt LPS" button. 2. Position a measuring point. 3. Position the cursor on the measuring point you want to copy. Click the right mouse button and select “Copy measuring point”. 4. Press the “Shift“ key if several measuring points ar e positioned.


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Figure 121: Copying a measuring point

5.7.3 Automatically positioning measuring points

Measuring points can also be positioned automatically. To this end, the separation distances are calculated along the entire conductor route. The distance between the displayed/calculated measuring points must be defined when automatically positioning measuring points. Values between 25 and 300 cm can be entered. A maximum of 10 values can be displayed. The number of calculated and displayed values depends on the conductor length from the top edge of the t he roof to ground level (+/- 0.00 m). 1. Click the "Adapt LPS" button. 2. Select the side view. 3. Select a line and position the cursor at the relevant location (top measuring point). 4. Click right mouse button and select “ Automatic measuring points". 5. Define the distance (cm) between the measuring points.

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Figure 122: Positioning several measuring points

Figure 123: Distance between the measuring points in cm

5.7.4

Shifting the zero potential level

In case of high steel frame or concrete buildings with interconnected reinforcement according to EN 623053, the zero potential level may be shifted/raised. Thus, potential differences between the internal installations and the building structure are virtually excluded and separation distances can be neglected in some cases. There are two types of application: Application 1: Zero potential level if the reinforcement is used as a down-conductor system and the airtermination system on the roof is intermeshed.


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An intermeshed air-termination system is typically installed on the roof of buildings which use the reinforcement as down conductor. In case of a lightning strike, the separation distances must be determined and considered due to the conductor routing. The zero potential level must be defined 0.1 – 0.2 m below the height of the building to calculate the separation distances. Example: Height of the building H1 = 20.0 m, zero potential level H2 = 20.0 m – 0.1 m = 19.9 m

Figure 124: Example of raising the potential level

Application 2: Building structure of a steel building used as natural down conductor

In case of buildings with interconnected steel frames and metal roof, the height of the zero potential level may be assumed to be equal to the t he height of the building. The requirements of EN 62305-3 must be observed for both applications.

Both applications can be simulated by means of the DEHN Distance Tool software. 1. Create a building. 2. Click "Select class of LPS". 3. Click "Calculate LPS". 4. Select “Potential level” in “ Calculate LPS". 5. Enter the height of the potential level in m. The starting point is ground level (+/- 0.00 m).

Figure 125: Defining the potential level

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Calculating the separation distance

If an air-termination system and down conductors are installed on a building, the separation distance s is calculated in a last step. The following procedure must be observed: 1. Click "Calculate LPS". 2. Define the lightning current (according to the LPL selected). 3. If required, define the potential level (predefined according to the data entered for creating a building). 4. Select the km factor. 6. If required, select "Determine max. separation distance". 5. Click "OK" to confirm.

Figure 126: Calculating the LPS

The separation distances at every node and measuring point as well as the maximum values are displayed.


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Figure 127: Calculate Calculated d separation distances

5.7.6

Defining the point of strike

To automatically calculate the separation distances, the DEHN Distance Tool module simulates a lightning strike in every node. The current is distributed between the existing conductors (mesh/down conductor) and the separation distances are calculated. In this case, it i t is assumed that lightning strikes every node. In case of small buildings protected by an air-termination rod, however, there is only one defined point of strike (rolling sphere method) and the lightning current is distributed along the conductor route. This can be simulated as follows by means of the "Point of strike" option: 1. Create a building and define the LPL. 2. Click "Adapt LPS". 3. If required, edit the predefined LPS. 4. Move the cursor to the location of the point of strike. Click the right mouse button and select "Define point of strike" option. The position of the point of strike can be changed at a later date by means of the cursor. 5. After positioning the point of strike, change to the "3D view" menu. 6. Click "Calculate LPS“. 7. Select “Only point of strike“ in the “Calculate LPS" menu. 8. Click "OK" to confirm. 81



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Figure 128: Positioning the point of strike

Figure 129: Selecting a point of strike for the calculation


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Compared to the calculation of the separation distances by means of the "All points" option, only the current flow in the conductor network is simulated when performing a calculation with a single point of strike. Thus, the real separation distances to the protected zones are displayed. It is assumed that there is only the defined point of strike. A protected zone should be defined beforehand.

Figure 130: Calculation with a single point of strike

5.8 Results 5.8.1

Displaying values

Click "Display values" to display the result of the calculation. Depending on the selected view, the calculated separation distances can also be displayed. Proceed as follows: 1. Click "Display values". 2. Select a part of the building. 3. Select a building view. 4. Print.

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Figure 131: Displaying values

5.8.2

Printing

Calculations can be printed via the print option. In addition to the data from the customer/project management, additional information on the project can be entered and printed. Once entered, these data are permanently stored. In addition, a company logo can be inserted. The logo can have the following maximum size: -With: 950 pixels -Height: 200 pixels To print a calculation, proceed as follows: 1. Select “3D view”/“Display values”. 2. When selecting "Display values", the view must be defined. 3. Click "Print". 4. Enter "Details on the designer/lightning protection system installer". 5. Insert a company logo. 6. Select a printer. 7. Print. DEHN + SÖHNE GMBH + CO.KG.

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Figure 132: Printing values

5.9 Hints & tricks 5.9.1

Double conductors

A building complex created by means of the DEHN Distance Tool software consists of several individual buildings. For this reason, the parts of a building are considered to be separate buildings when defining an LPS (select LPL in the program). Thus, an LPS (air-termination system/down conductor) is created for every single part of the building. Therefore, conductors may not be visible at surfaces where the building parts merge into one another. These double conductors are included in the calculation of the separation distances. This leads to incorrect results. Double or superimposed conductors are displayed in blue colour.

Figure 133: Superimpose Superimposed d conductors

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Figure 134: View of superimpos superimposed ed conductors

5.9.2

Example of different buildings

Figure 135: E-shaped building


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Figure 136: Church with two steeples

Figure 137: Pitched roof with air-termination rod

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Figure 138: Shed roof

Figure 139: Elevated ring conductor and connection of a HVI Conductor


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6. DEHN Air-Termination termination rods

Tool/calculation

of

the

height

of

air-

6.1 General To determine the height of air-termination rods, graphics are required in some cases which must be created depending on the class of LPS. To facilitate work for qualified personnel, calculations for different types of graphics are integrated in the DEHNsupport software. Every roof-mounted structure is considered separately in the individual calculations. To be able to assess complex roof-mounted structures, only one graphic is displayed. Objects on a plain surface (ground) can also be calculated. In case of individual calculations, “#WERT!“ may be displayed as result (Figure 140). 140). This means that the entered object cannot be protected by the required number of air-termination rods with the class of LPS selected.

Figure 140: "#WERT!"



This option is the fastest way to start a new calculation. However, the calculation is not saved under an existing project and cannot be assigned to a project at a later date.

Figure 141: Direct access to the calculation of air-termination rods

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To start the calculation, click the DEHN Air-Termination Tool symbol and select “Direct program access” in the opening window. An Excel document now opens which allows to perform a calculation. As an alternative, you can directly access the program via the menu bar. To this end, select “File -> New calculation -> Length of air-termination rod“.


6.2.2


Calculations can be directly opened or created via the start screen. To this end, click the DEHN AirTermination Tool symbol and select “Create/open a new/existing project“ in the opening window.

Figure 143: Creating a new calculation for the height of an air-termination rod

In the next step, a new customer can be created in the displayed window. This customer is saved in the customer and project management and can be changed at a later date. Click “Next“ to continue. DEHN + SÖHNE GMBH + CO.KG.

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Figure 144: Creating a new customer for calculating the height of an air-termination rod

In the next window, the relevant project data must be entered. If you want to perform a risk analysis or calculate the separation distance at a later date, you can now select the relevant standard which can be changed before performing a risk analysis. Click “Next“ to open the Excel table for calculating the height of the air-termination rod.

Figure 145: Creating a new project for calculating the height of an air-termination rod

If a customer has already been created and you want to save a calculation for this customer, select the “Select existing customer“ tab and Click “Next“ to continue. 91



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Figure 146: Selecting an existing customer for calculating the height of an air-termination rod

You can now create a new project for the relevant customer or select an existing project. If one or more calculations have already been created for a project, click “Edit” to open them. As an alternative, click the “New“ button to start a new calculation.

Figure 147 Editing an existing calculation calculation for the height of an air-termination rod

6.2.3

Creating/opening a calculation via the customer and project management

As an alternative to the direct access via the start screen, a calculation can also be created via the customer and project management. For more detailed information, please see Customer and project management .


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6.2.4


Note on macros

Some users are asked whether they want to activate macros. In this case, c lick “Activate macros“. This request differs from Excel version to Excel version. Please contact your administrator if this request does not appear. The macros must be activated to change the language. If the request does not appear and you are not able to change the language, the macros are permanently deactivated.

6.3 Layout of the DEHN Air-Termination Tool

Figure 148: Layout for the calculation of the height of an air-terminatio air-termination n rod

Select a language. Select a country-specific country-specific standard. Tab for the individual calculations. The customer, project and project number can be entered here. 93



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Grey fields = Input fields for the dimensions of the relevant calculation (with regard to the graphic) White fields = Intermediate results Green fields fields = Final result of the relevant calculation The individual tabs are printed on a DIN A4 page.

6.4 Calculating the height of air-termination rods by means of the protective angle method 6.4.1

Calculation for one air-termination rod with sufficient separation distance from the roof-mounted structure

Figure 149: Calculation for one air-termination rod installed diagonal to the roof-mounted structure by means of the protective angle method

The air-termination rod is positioned in the extended diagonal of the object. This is the most unfavourable position for an air-termination rod. The calculation is to be used for roof-mounted roof-mounted structures located in the centre of a roof. If roof-mounted structures are installed at the edge of a building, it is important that the air-termination rod is positioned between the roof-mounted structure and the edge of the roof. Thus, the protective angle refers to the roof surface. The following data can be entered: Class of LPS, length “l“, width “b”, height “h“ and separation distance “s“ distance (between the air-termination rod and the object). All dimensions are shown in metres.


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6.4.2


Calculation with variable lateral distance of the air-termination rod

Figure 150: Calculation for one air-termination rod with a lateral distance by means of the protective angle method

In this case, the air-termination rod can be exactly positioned. To this end, the lateral distance c was included in the calculation and the air-termination rod can be shifted along its length. The calculation is to be used for roof-mounted roof-mounted structures located in the centre of the roof. roof. If roof-mounted structures are installed at the edge of a building, it is important that the air-termination rod is positioned between the roof-mounted structure and the edge of the roof. Thus, the protective angle refers to the roof surface. The following data can be entered: Class of LPS, length “l“, width “b”, height “h“, lateral distance “c” and separation distance “s“ (distance between the air-termination rod and the object). All dimensions are shown in metres.

6.5 Calculating the height of air-termination rods by means of the rolling sphere method 6.5.1

Calculation for one air-termination rod with sufficient separation distance from the roof-mounted structure

Figure 151: Calculation for one air-termination rod installed diagonal to the roof-mounted structure by means of the rolling sphere method

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The air-termination rod is positioned in the extended diagonal of the object. This is the most unfavourable position for an air-termination rod. The calculation is i s to be used for roof-mounted roof-mounted structures located in the centre of a roof. If roof-mounted structures are installed at the edge of the building, it is important that the air-termination rod is positioned between the roof-mounted structure and the edge of the roof. Thus, the rolling sphere refers to the roof surface. The following data can be entered: Class of LPS, length “l“, width “b”, height “h“ and separation distance “s“ distance (between the air-termination rod and the object). All dimensions are shown in metres. 6.5.2


Figure 152: Calculation for one air-termination rod with a lateral distance by means of the rolling sphere method

In this case, the air-termination rod can be exactly positioned. To this end, the lateral distance c was included in the calculation and the air-termination rod can be shifted along its length. The calculation is to be used for roof-mounted roof-mounted structures located in the centre of the roof. roof. If roof-mounted structures are installed at the edge of a building, it is important that the air-termination rod is positioned between the roof-mounted structure and the edge of the roof. Thus, the rolling sphere refers to the roof surface. The following data can be entered: Class of L PS, length “l“, width “b”, height “h“, lateral distance “c” and separation distance “s“ (between the air-termination rod and the object). All dimensions are shown in metres.


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6.6 Calculating the height of two air-termination rods by means of the rolling sphere method 6.6.1

Calculation for two air-termination rods with sufficient separation distance from the roof-mounted structure

Figure 153: Calculation for two air-termination rods with the roof-mounted structure in the centre

For this calculation, two air-termination rods are used to protect the object and are positioned in the centre of the width. The calculation is to be used for roof-mounted structures located in the centre of the roof. When dimensioning the air-termination rod, not only the sag of the rolling sphere from above, but also the lateral sag is decisive. Consequently, the more unfavourable case is always assumed for the height of the air-termination rod. The following data can be entered: Class of LPS, length “l“, width “ b”, height “h“ and separation distance “s“ distance (between the air-termination rod and the object). All dimensions are shown in metres. 6.6.2


Figure 154: Calculation for two air-terminatio air-termination n rods with an offset to the roof-mounted structure

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In this case, the air-termination rod can be exactly positioned. To this end, the lateral distance c was integrated in the calculation and the air-termination rod can be shifted along its length. The calculation is to be used for roof-mounted roof-mounted structures structures located in the the centre of the roof. roof. When dimensioning the airtermination rod, not only the sag of the rolling sphere from above, but also the lateral sag is decisive. Consequently, the more unfavourable case is always assumed for the height of the air-termination rod. The following can data be entered: Class of LPS, length “l“, width “b”, height “h“, lateral distance “c” and separation distance “s“ (between the air-termination rod and the object). All dimensions are shown in metres.

6.7 Calculating the height of four air-termination rods by means of the rolling sphere method 6.7.1

Calculation for four air-termination rods with sufficient separation distance from the roof-mounted structure

Figure 155: Calculation for four air-terminati air-termination on rods of the same height

For this calculation, four air-termination rods are evenly spaced around the object to be protected. The airtermination rods are positioned along the width “b“ at a distance “s“. If more than four air-termination rods are arranged, the distance from rod to rod on the longitudinal side can also be entered for “l”. The calculation is to be used for roof-mounted structures located in the centre of the roof. When dimensioning the air-termination rod, not only the sag of the rolling sphere from above, but also the lateral sag is decisive. Thus, the more unfavourable case is always assumed for the height of the air-termination rod. The following data can be entered: Class of LPS, length “l“, width “b”, height “h“ and separation distance “s“ (between the air-termination rod and the object). All dimensions are shown in metres.


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6.7.2


Calculation for four air-termination rods of different heights with sufficient separation distance

Figure 156: Calculation for four air-termination rods of different heights

For this calculation, four air-termination rods are evenly spaced around the object to be protected. The airtermination rods are positioned along the width “b“ at a distance “s“. This type of calculation allows to determine different heights of air-termination rods. The pair with the same height is always positioned along the length “l”. T he calculation is to be used for roof-mounted structures located in the centre of the roof. When dimensioning the air-termination rod, not only the sag of the rolling sphere from above, but also the lateral sag is decisive. The minimum height of the short air-termination rod must be entered which results from the lateral sag. The following data can be entered: Class of LPS, length “l“, width “b”, height “h“ , separation distance “s“ (between the air-termination rod and the object) and the minimum height of the short air-termination rod. All dimensions are shown in metres.

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6.8 Calculating the height of four air-termination rods on a sloped surface by means of the rolling sphere method 6.8.1

Calculation for four air-termination rods on a sloped roof surface

Figure 157: Calculation for four air-termination rods on a sloped roof surface

For this calculation, four air-termination rods are evenly spaced around the object to be protected with sufficient separation distance from the roof-mounted structure. The horizontal values must be entered for “l” and “b” . When dimensioning the air-termination rod, not only the sag of the rolling sphere from above, but also the lateral sag is decisive. Thus, the more unfavourable case is always assumed for the height of the air-termination rod. The following data can be entered: Class of LPS, roof pitch “α” (in degree), length “l“, width “b and height of the roof-mounted structure “h“. All dimensions are shown in metres.


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6.8.2


Calculation for four air-termination rods of different heights on a sloped roof surface

Figure 158: Calculation for four air-termination rods of different heights on a sloped roof surface

For this calculation, four air-termination rods are evenly spaced around the object to be protected with sufficient separation distance from the roof-mounted structure. The horizontal values must be entered for “l” and “b”. This type of calculation allows to determine different heights of air-termination rods. The airtermination rod near the eaves is i s assumed to be the short air-termination rod.. The minimum height of the short air-termination rod must be entered which results from the lateral sag. The following data can be entered: Class of LPS, roof pitch “α” (in degree), length “l“, width “b , height of the roof-mounted structure “h“ and minimum height of the air-termination rod near the eaves. All dimensions are shown in metres.

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7. DEHN Earthing Tool/calculation of the length of earth electrodes 7.1 General The calculations for determining the specific length of earth electrodes are based on Ed. 2 of the EN 623053 standard. In the DEHN Earthing Tool, calculations are performed in line with the standard. Possible references to the calculation or dimensioning of the lengths of earth electrodes described in national supplements are not considered.



This option is the fastest way to start a new calculation. However, the calculation is not saved under an existing project and cannot be assigned to a project at a later date.

Figure 159: Direct access to the calculat calculation ion of the lengths of earth electrodes

To start the calculation, click the DEHN Earthing Tool symbol and select “Direct program access” in the opening window. An Excel document opens which allows to perform a calculation. As an alternative, you can directly access the program via the menu bar. To this end, select “File -> New calculation -> Length of the earth electrode“.


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7.2.2


Calculations can also be opened or created directly via the start screen. For this purpose, click the DEHN Earthing Tool symbol and select “Create/open a new/existing project“ in the opening window.

Figure 161: Creating a new calculation for the length of earth electrodes

In the next step, a new customer can be created in the displayed window. This customer is saved in the customer and project management. and can be edited at a later date. Click “ Next“ to continue.

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Figure 162: Creating a new customer for calculating the length of earth electrodes

In the next window, the relevant project data must be entered. If you want to perform a risk analysis or calculate the separation distance at a later date, you can now select the relevant standard which can be changed before performing a risk analysis. Click “Next“ to open the Excel table for calculating the height of earth electrodes.

Figure 163: Creating a new project for calculating the length of earth electrodes

If a customer has already been created and you want to save a calculation for this customer, select the “Select existing customer“ tab and click “Next“ to continue.


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Figure 164: Selecting an existing customer for calculating the length of the earth electrodes

You can now create a new project for the relevant customer or select an existing project. If one or more calculations have already been created for a project, click “Edit” to open them. As an alternative, click “New“ to start a new calculation.

.

Figure 165: Editing an existing calculation of the length of earth electrodes

7.2.3

Creating/opening a new calculation via the c ustomer and project management

As an alternative to the direct access via the start screen, a calculation can al so be created via the customer and project management. For more detailed information, please refer to Customer and project management. 105



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Notes on macros

Some users are asked whether they want to activate macros. In this case, c lick “Activate macros“. This request differs from Excel version to Excel version. Please contact your administrator if this request does not appear. The macros must be activated to change the language. If the request does not appear and you are not able to change the language, the macros are permanently deactivated.

7.3 Layout of the DEHN Earthing Tool

Figure 166: Layout for the calculatio calculation n of the length of earth electrodes

Select a language. Select a country-specific country-specific standard. Input field for customer, project and project number Grey fields =

Input fields

White fields = Intermediate results Green/red fields =

Final result of the relevant calculation

The relevant tabs can be printed on a DIN A4 page. DEHN + SÖHNE GMBH + CO.KG.

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7.4 Calculation according to a type A arrangement This calculation shows the required length of a horizontal or vertical earth electrode. To this end, select the relevant class of LPS and the type of earth electrode. In case of class of LPS I and II, the relevant soil resistivity must also be entered. In case of class of LPS III and IV, it is sufficient to enter a space. The required length of the earth electrode is determined by means of the displayed diagram. On the right side, different languages and the relevant standard used for the calculation can be selected.

Figure 167: Calculation for a type A earthing arrangem arrangement ent

7.5 Calculation according to a type B arrangement This calculation shows whether the existing or planned type B earth-termination system is sufficiently dimensioned. Ring or foundation earth electrodes are referred to as type B earth electrodes. The enclosed area of the earth electrode is required for the calculation which is converted into a circular surface. The resulting radius is the calculated length of the earth electrode. This result is compared to the required length of the earth electrode according to the type A earthing arrangement. If this value is smaller than the required value, additional measures must be taken.

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Figure 168: Calculation for a type B earthing arrangem arrangement ent

7.6 Soil resistivity pE The soil resistivity pE depends on the soil composition, soil humidity and the temperature and can widely vary. The graphic below shows the variations of the soil resistivity pE in case of different types of soil.

Figure 169: Soil resistivity ρE in case of different types of soil


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8. General information 8.1 Online update The DEHNsupport Toolbox software is permanently updated (e.g. new standards or languages are added). We will inform you via the mail address provided as soon as a new free update is available. If your computer is connected to the Internet, an automatic updated can be activated via the start screen of the Toolbox. To this end, select the “ Search internet for update“ option in the “Help” menu item . Now it is checked every time the software is started whether an update is available and if so, the update is downloaded. As an alternative, the latest update can also be downloaded from our homepage at http//www.dehn-international.com/en/d http//www.dehn-internati onal.com/en/dehnsupport-toolbo ehnsupport-toolboxx.

Figure 170: Automatic update

In case of an automatic update, the program is installed directly after the download. If the update has been downloaded from our homepage, the installation must be started manually. In this process, new program files are installed. Existing customers and projects are not deleted.

8.2 Number management In the “ Number Management“ window of the “Management“ menu item the numbering parameters can be defined for projects and customers.

Figure 171: Access to the number management

The same setting options can be found in the customer and project tabs:

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Figure 172: Number management

Initial value Increment Current number Number length Format

Reset

Last reset Next number

Start of numbering Increase of numbers per step Last number assigned by the program Digits of the assigned numbers Select one of the options provided (these consist of a consecutive number $S and parts of the date: MM = month and/or YY = year) or define your own format which must start with $ and include $S. Moreover, all values (such as MM, YY and $S) and your abbreviations or the like must be separated by a slash or “/“ . Rests numbering to 0, the parameters are not changed. Automatically performed by the program, either: - Never - Once a month or - Once a year Date of the last reset Next number to be assigned for customers or projects Table 5: Possible settings for the number management

8.3 Uninstalling the program This option can be found in the start menu of the DEHNsupport software and deletes all installed DEHNsupport components from your PC. To be able to change already performed calculations at a later date, the program must be re-installed. For this reason, export all created customers from the customer and project management before uninstalling the program. These can be imported at a later date. The program does not have to be uninstalled for an update.


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Figure 173: Uninstallation window

8.4 Support/seminars 8.4.1

Technical support

In case of problems with single-user or multi-user installation, opening the Toolbox or other technical problems, please do not hesitate to contact us via phone at +49 09181 906-1594. 906-1594. 8.4.2 Application support

If you have any questions concerning the software, registration, ordering procedure or application-specific questions, please do not hesitate to contact us via phone at +49 09181 906-1601 or send us an e-mail to [email protected] 8.4.3

Seminars

In this two-day seminar you will become acquainted with the risk management basics as per IEC 62305-2. Besides theoretical knowledge, each seminar also includes different practical applications using the DEHNsupport Toolbox 3.0 software. Moreover, you will learn how to calculate the separation distance, the length of air-termination rods and the length of earth electrodes by means of the relevant software module.

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9. Figures Figure 1: Autoplay ............................................................................................................................................. ............................................................................................................................................. 6 Figure 2: Selecting the setup language................................................................... language.............................................................................................................. ........................................... 7 Figure 3: Installation notes ........................................................................................................... ................................................................................................................................ ..................... 7 Figure 4: Agreeing to the license agreement .................................................................................................... .................................................................................................... 7 Figure 5: Selecting the installation components .......................................................................... ............................................................................................... ..................... 8 Figure 6: Selecting the target directory for the main program ............................................................... ......................................................................... .......... 8 Figure 7: Selecting the target directory of the SQL server ................................................................................ ................................................................................ 9 Figure 8: Installation progress ........................................................................................................................... ........................................................................................................................... 9 Figure 9: Completing the installation ......................................................................................................... .............................................................................................................. ..... 10 Figure 10: Installation path of the WinMySQLAdmin application ........................................................... ................................................................... ........ 11 Figure 11: Traffic symbol for SQL .................................................................................................................... 11 Figure 12: Network files ................................................................... .................................................................................................................................. ............................................................... 12 Figure 13: Creating a link for DEHNsupport ............................................................................................ .................................................................................................... ........ 12 Figure 14: DirectX diagnostic tool .............................................................. ................................................................................................................... ..................................................... 13 Figure 15: Connection settings for the SQL server ............................................................ .......................................................................................... .............................. 13 Figure 16: Updating the registration ................................................................................. ............................................................................................................... .............................. 14 Figure 17: Registration window ................................................................... ....................................................................................................................... .................................................... 15 Figure 18: Start screen of the DEHNsupport Toolbox .................................................................. ..................................................................................... ................... 16 Figure 19: Customer/project Customer/project management ma nagement........................................................... ..................................................................................................... .......................................... 17 Figure 20: Overview of the customer/project management .......................................................................... .......................................................................... 17 Figure 21: Customer and project search ......................................................................................................... ......................................................................................................... 18 Figure 22: Customer symbols .................................................................................................................. .......................................................................................................................... ........ 18 Figure 23: Project symbols .............................................................................................................................. .............................................................................................................................. 18 Figure 24: Calculation symbols .......................................................................................... ........................................................................................................................ .............................. 19 Figure 25: Creating a new customer ............................................................................................................... ............................................................................................................... 19 Figure 26: Selecting a customer’s postal code ........................................................................................ ................................................................................................ ........ 20 Figure 27: Selecting the ground flash density for customers ..................................................................... .......................................................................... ..... 20 Figure 28: Creating a new project ................................................................................................................... ................................................................................................................... 21 Figure 29: Selecting the basis of calculation .......................................................... ................................................................................................... ......................................... 21 Figure 30: Selecting a postal code for a project ........................................................................... .............................................................................................. ................... 22 Figure 31: Selecting the ground flash density for a project ............................................................................ 22 Figure 32: Creating a new calculation ............................................................................................................. ............................................................................................................. 23 Figure 33: Direct access to the risk ri sk analysis .................................................................................................... .................................................................................................... 24 Figure 34: Direct access via the menu bar............................................................. ....................................................................................................... .......................................... 25 Figure 35: Creating a new risk analysis................................................................... analysis............................................................................................................ ......................................... 25 Figure 36: Creating a new customer for a risk analysis ................................................................... ................................................................................... ................ 26 Figure 37: Creating a new project for a risk analysis ......................................................... ....................................................................................... .............................. 26 Figure 38: Selecting an existing customer for a risk analysis .......................................................................... 27 Figure 39: Editing an existing risk analysis ...................................................................................................... 27 Figure 40: Editing project data ........................................................................................................................ 28 Figure 41: Selecting the basis of calculation .......................................................... ................................................................................................... ......................................... 28 Figure 42: Opening the ground flash density database .................................................................................. 28 Figure 43: Determining the ground flash density for a risk analysis ............................................................... 29 Figure 44: Selecting the risks to be considered ................................................................. ............................................................................................... .............................. 29 DEHN + SÖHNE GMBH + CO.KG.

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Figure 45: Window for assigning buildings to one another ............................................................................ 30 Figure 46: Assigning the unprotected version ................................................................... ................................................................................................. .............................. 30 Figure 47: Start screen of the DEHN Risk Tool ................................................................................................ ................................................................................................ 31 Figure 48: “File“ menu item of a risk analysis ................................................................................................. 32 Figure 49: "Edit" menu item of a risk analysis ................................................................... ................................................................................................. .............................. 32 Figure 50: "Language" menu item of a risk analysis .......................................................... ........................................................................................ .............................. 32 Figure 51: Symbols of the general project buttons ........................................................... ......................................................................................... .............................. 34 Figure 52: Popup containing additional information ...................................................................................... ...................................................................................... 35 Figure 53: Entering the basic data of an object ................................................................. ............................................................................................... .............................. 35 Figure 54: Editing objects ................................................................................................................................ ................................................................................................................................ 36 Figure 55: Symbols of “Editing objects“ ..................................................................................................... .......................................................................................................... ..... 36 Figure 56: Simple structure ............................................................................................... ............................................................................................................................. .............................. 37 Figure 57: Building with wi th high point.................................................................................................................. point.................................................................................................................. 37 Figure 58: Complex structure .................................................................................................................. .......................................................................................................................... ........ 38 Figure 59: Entering the existing zones............................................................................................................. zones............................................................................................................. 39 Figure 60: Buttons for dividing a building into zones ................................................................... ...................................................................................... ................... 39 Figure 61: Example of dividing a building into zones ...................................................................................... ...................................................................................... 40 Figure 62: Properties of a zone............................... zone..................................................................................................... ......................................................................................... ................... 40 Figure 63: Access to the cost assessment ....................................................................................................... 41 Figure 64: Cost assessment for economic loss .................................................................. ................................................................................................ .............................. 41 Figure 65: Overview of the loss values entered .............................................................................................. .............................................................................................. 42 Figure 66: Selecting an Ex zone and the associated time ............................................................. ................................................................................ ................... 43 Figure 67: Changing the name of a supply line ............................................................................................... 44 Figure 68: External properties of a supply line .................................................................. ................................................................................................ .............................. 44 Figure 69: System connected .......................................................................................................................... .......................................................................................................................... 45 Figure 70: Characteristics of the internal systems of a supply line ................................................................. ................................................................. 45 Figure 71: Properties of the building, “Factors“ button .................................................................................. ................................................................................. 46 Figure 72: Selecting the risk of fire .................................................................................... .................................................................................................................. .............................. 46 Figure 73: Shielding measures for a building and the zones ...................................................................... ........................................................................... ..... 47 Figure 74: Possible losses ................................................................................................................................ ................................................................................................................................ 47 Figure 75: Activating “Additional loss” ............................................................................................................ ........................................................................................................... 48 Figure 76: Access to the calculation of costs .......................................................... ................................................................................................... ......................................... 48 Figure 77: Entering the economic loss ............................................................................................................ ............................................................................................................ 49 Figure 78: Access to measures ........................................................................................................................ ........................................................................................................................ 49 Figure 79: Selecting measures ..................................................................... ......................................................................................................................... .................................................... 50 Figure 80: Buttons for reducing the risk ....................................................................................... .......................................................................................................... ................... 50 Figure 81 Residual risk ..................................................................... ..................................................................................................................................... ................................................................ 50 Figure 82: Print window .................................................................................................................................. .................................................................................................................................. 51 Figure 83: Selection options for a long printout ............................................................................................. ............................................................................................. 51 Figure 84: Questionnaire window ................................................................................................................... ................................................................................................................... 52 Figure 85: Importing the project data in the questionnaire ...................................................................... ........................................................................... ..... 52 Figure 86: Direct access to the Distance Tool.............................................. Tool.................................................................................................. .................................................... 53 Figure 87: Direct access to the calculation of the separation distance via the menu bar .............................. 54 Figure 88: Creating a new calculation of the separation distance .................................................................. .................................................................. 54 Figure 89: Creating a new customer for calculating the separation distance ................................................. 55 Figure 90: Creating a new project for calculating the separation distance .................................................... 55 113



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Figure 91: Selecting an existing customer for calculating the separation distance ........................................ ........................................ 56 Figure 92: Editing an existing calculation of the separation distance ............................................................. ............................................................. 56 Figure 93: Start screen of DEHN Distance Tool ............................................................................................... ............................................................................................... 57 Figure 94: Selecting a building type ............................................................ ................................................................................................................. ..................................................... 59 Figure 95: Entering the building dimensions for a predefined building .......................................................... 59 Figure 96: 3D building without lightning protection system ...................................................................... ........................................................................... ..... 60 Figure 97: Constructing a building.............................................................. ................................................................................................................... ..................................................... 61 Figure 98: Entering the building data .............................................................................................................. .............................................................................................................. 62 Figure 99: 3D building with roof-mounted structure without lightning protection system ........................... ........................... 62 Figure 100: Position of the individual annexes ................................................................. ............................................................................................... .............................. 63 Figure 101: “Adapt LPS” button .................................................................. ...................................................................................................................... .................................................... 64 Figure 102: Selecting the views for adapting the LPS........................................................ LPS...................................................................................... .............................. 64 Figure 103: Zero point and coordinate system ............................................................................................... 65 Figure 104: Capture option for conductors ........................................................... ..................................................................................................... .......................................... 65 Figure 105: Deleting a conductor .................................................................................................................... .................................................................................................................... 66 Figure 106: Positioning an air-termination rod ............................................................................................... ............................................................................................... 67 Figure 107: Defining the height of an air-termination rod ........................................................... .............................................................................. ................... 67 Figure 108: Inserting a conductor for an air-termination rod .................................................................... ......................................................................... ..... 68 Figure 109: Inserted air-termination rod ........................................................................................................ ........................................................................................................ 68 Figure 110: Copying a selected air-termination rod.......................................................... ........................................................................................ .............................. 69 Figure 111: Interconnecting the tips of air-termination rods ......................................................................... 70 Figure 112: Changing the height of an air-termination rod ............................................................................ ............................................................................ 70 Figure 113: Inserting a ring conductor ............................................................................................................ ............................................................................................................ 71 Figure 114: Height of a ring conductor ................................................................... ............................................................................................................ ......................................... 71 Figure 115: Shifting down conductors........................................................ ............................................................................................................. ..................................................... 72 Figure 116: Positioning a down conductor ............................................................ ...................................................................................................... .......................................... 73 Figure 117: Inserting a down conductor ......................................................................................................... ......................................................................................................... 73 Figure 118: Positioning an internal down conductor ................................................................... ...................................................................................... ................... 74 Figure 119: Inserting a comment .................................................................................................................... .................................................................................................................... 75 Figure 120: Positioning individual measuring points ...................................................................................... 76 Figure 121: Copying a measuring point ........................................................................................ ........................................................................................................... ................... 77 Figure 122: Positioning several measuring points ............................................................. ........................................................................................... .............................. 78 Figure 123: Distance between the measuring points in cm ......................................................... ............................................................................ ................... 78 Figure 124: Example of raising the potential level .................................................................................. .......................................................................................... ........ 79 Figure 125: Defining the potential level ....................................................................................... .......................................................................................................... ................... 79 Figure 126: Calculating the LPS ....................................................................................................................... ....................................................................................................................... 80 Figure 127: Calculated separation distances .......................................................... ................................................................................................... ......................................... 81 Figure 128: Positioning the point of strike ...................................................................................................... ...................................................................................................... 82 Figure 129: Selecting a point of strike for the calculation ............................................................ ............................................................................... ................... 82 Figure 130: Calculation with a single point of strike ....................................................................................... 83 Figure 131: Displaying values .......................................................................................................................... .......................................................................................................................... 84 Figure 132: Printing values .............................................................................................................................. .............................................................................................................................. 85 Figure 133: Superimposed conductors................................................................... ............................................................................................................ ......................................... 85 Figure 134: View of superimposed conductors ................................................................. ............................................................................................... .............................. 86 Figure 135: E-shaped building ...................................................................................................... ......................................................................................................................... ................... 86 Figure 136: Church with two steeples ........................................................ ............................................................................................................. ..................................................... 87 DEHN + SÖHNE GMBH + CO.KG.

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Figure 137: Pitched roof with air-termination rod .................................................................................. .......................................................................................... ........ 87 Figure 138: Shed roof ................................................................................................................... ...................................................................................................................................... ................... 88 Figure 139: Elevated ring conductor and connection of a HVI Conductor ...................................................... 88 Figure 140: "#WERT!" .............................................................................................................................. ...................................................................................................................................... ........ 89 Figure 141: Direct access to the calculation of air-termination rods .............................................................. 89 Figure 142: Direct access via the menu m enu bar..................................................................................................... bar..................................................................................................... 90 Figure 143: Creating a new calculation for the height of an air-termination rod ........................................... 90 Figure 144: Creating a new customer for calculating the height of an air-termination rod ........................... 91 Figure 145: Creating a new project for calculating the height of an air-termination rod ............................... 91 Figure 146: Selecting an existing customer for calculating the height of an air-termination ai r-termination rod .................. 92 Figure 147 Editing an existing calculation for the height of an air-termination rod ....................................... 92 Figure 148: Layout for the calculation of the height of an air-termination rod ............................................. 93 Figure 149: Calculation for one air-termination rod installed diagonal to the roof-mounted structure by means of the protective angle method .................................................................. ........................................................................................................... ......................................... 94 Figure 150: Calculation for one air-termination rod with a lateral distance by means of the protective angle method ............................................................................................................................................................ ............................................................................................................................................................ 95 Figure 151: Calculation for one air-termination rod installed diagonal to the roof-mounted structure by means of the rolling sphere method ...................................................................... ............................................................................................................... ......................................... 95 Figure 152: Calculation for one air-termination rod with a lateral distance by means of the rolling sphere method ............................................................................................................................................................ ............................................................................................................................................................ 96 Figure 153: Calculation for two air-termination rods with the roof-mounted structure in the centre .......... 97 Figure 154: Calculation for two air-termination rods with an offset to the roof-mounted roof-mounted structure ............ ............ 97 Figure 155: Calculation for four air-termination rods of the t he same height ...................................................... 98 Figure 156: Calculation for four air-termination rods of different heights ..................................................... 99 Figure 157: Calculation for four air-termination rods on a sloped roof surface ........................................... ........................................... 100 Figure 158: Calculation for four air-termination rods of different heights on a sloped roof surface ........... ........... 101 Figure 159: Direct access to the calculation of the lengths of earth electrodes ........................................... 102 Figure 160: Direct access via the menu m enu bar................................................................................................... bar................................................................................................... 103 Figure 161: Creating a new calculation for the length of earth electrodes .................................................. .................................................. 103 Figure 162: Creating a new customer for calculating the length of earth electrodes .................................. 104 Figure 163: Creating a new project for calculating the length of earth electrodes ...................................... 104 Figure 164: Selecting an existing customer for calculating the length of the earth electrodes ................... 105 Figure 165: Editing an existing calculation of the length of earth electrodes............................................... 105 Figure 166: Layout for the calculation of the length of earth electrodes ..................................................... ..................................................... 106 Figure 167: Calculation for a type A earthing arrangement ......................................................... .......................................................................... ................. 107 Figure 168: Calculation for a type B earthing arrangement ......................................................... .......................................................................... ................. 108 Figure 169: Soil resistivity ρE in case of different types of soil ................................................................... ...................................................................... ... 108 Figure 170: Automatic update..................................................................... ....................................................................................................................... .................................................. 109 Figure 171: Access to the number management .......................................................................................... 109 Figure 172: Number management ................................................................................................................ ................................................................................................................ 110 Figure 173: Uninstallation window.................................................................................... window................................................................................................................ ............................ 111

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Table 1: Definition of Ex zones ........................................................................................................................ ........................................................................................................................ 42 Table 2: Reference values for the presence of a dangerous explosive atmosphere....................................... 43 Table 3: Specific fire load l oad.................................................................. ................................................................................................................................. ............................................................... 46 Table 4: Parameters of the relevant r elevant class of LPS............................................................................................. LPS............................................................................................. 60 Table 5: Possible settings for the t he number management .............................................................................. .............................................................................. 110

Moreover, some sections of the IEC 62305-2 standard were included in this document.


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