Nokia+3G+Requirements+for+Installation+and+Operation

Requirements for Installation and Operation

DN7037979 Issue 2-0 en draft

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The information in this document is subject to change without notice and describes only the product defined in the introduction of this documentation. This document is not an official customer document and Nokia Networks does not take responsibility for any errors or omissions in this document. No part of it may be reproduced or transmitted in any form or means without the prior written permission of Nokia Networks. The document has been prepared to be used by professional and properly trained personnel, and the customer assumes full responsibility when using it. Nokia Networks welcomes customer comments as part of the process of continuous development and improvement of the documentation. The information or statements given in this document concerning the suitability, capacity, or performance of the mentioned hardware or software products cannot be considered binding but shall be defined in the agreement made between Nokia Networks and the customer. Nokia Networks WILL NOT BE RESPONSIBLE IN ANY EVENT FOR ERRORS IN THIS DOCUMENT OR FOR ANY DAMAGES, INCIDENTAL OR CONSEQUENTIAL (INCLUDING MONETARY LOSSES), that might arise from the use of this document or the information in it. UNDER NO CIRCUMSTANCES SHALL NOKIA BE RESPONSIBLE FOR ANY LOSS OF USE, DATA, OR INCOME, COST OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, PROPERTY DAMAGE, PERSONAL INJURY OR ANY SPECIAL, INDIRECT, INCIDENTAL, PUNITIVE OR CONSEQUENTIAL DAMAGES HOWSOEVER CAUSED. THE CONTENTS OF THIS DOCUMENT ARE PROVIDED "AS IS". EXCEPT AS REQUIRED BY APPLICABLE MANDATORY LAW, NO WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT, ARE MADE IN RELATION RELATION TO THE ACCURACY, RELIABILITY OR CONTENTS OF THIS DOCUMENT. NOKIA RESERVES THE RIGHT TO REVISE THIS DOCUMENT OR WITHDRAW IT AT ANY TIME WITHOUT PRIOR NOTICE. This document and the product it describes are considered protected by copyright according to the applicable laws. NOKIA and Nokia Connecting People are registered trademarks of Nokia Corporation. Other product names mentioned in this document may be trademarks of their respective companies, and they are mentioned for identification purposes only. Copyright © Nokia Corporation 2006. All rights reserved. Reproduction, transfer, distribution or storage of part or all of the contents in this document in any form without the prior written permission of Nokia is prohibited.

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The information in this document is subject to change without notice and describes only the product defined in the introduction of this documentation. This document is not an official customer document and Nokia Networks does not take responsibility for any errors or omissions in this document. No part of it may be reproduced or transmitted in any form or means without the prior written permission of Nokia Networks. The document has been prepared to be used by professional and properly trained personnel, and the customer assumes full responsibility when using it. Nokia Networks welcomes customer comments as part of the process of continuous development and improvement of the documentation. The information or statements given in this document concerning the suitability, capacity, or performance of the mentioned hardware or software products cannot be considered binding but shall be defined in the agreement made between Nokia Networks and the customer. Nokia Networks WILL NOT BE RESPONSIBLE IN ANY EVENT FOR ERRORS IN THIS DOCUMENT OR FOR ANY DAMAGES, INCIDENTAL OR CONSEQUENTIAL (INCLUDING MONETARY LOSSES), that might arise from the use of this document or the information in it. UNDER NO CIRCUMSTANCES SHALL NOKIA BE RESPONSIBLE FOR ANY LOSS OF USE, DATA, OR INCOME, COST OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, PROPERTY DAMAGE, PERSONAL INJURY OR ANY SPECIAL, INDIRECT, INCIDENTAL, PUNITIVE OR CONSEQUENTIAL DAMAGES HOWSOEVER CAUSED. THE CONTENTS OF THIS DOCUMENT ARE PROVIDED "AS IS". EXCEPT AS REQUIRED BY APPLICABLE MANDATORY LAW, NO WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT, ARE MADE IN RELATION RELATION TO THE ACCURACY, RELIABILITY OR CONTENTS OF THIS DOCUMENT. NOKIA RESERVES THE RIGHT TO REVISE THIS DOCUMENT OR WITHDRAW IT AT ANY TIME WITHOUT PRIOR NOTICE. This document and the product it describes are considered protected by copyright according to the applicable laws. NOKIA and Nokia Connecting People are registered trademarks of Nokia Corporation. Other product names mentioned in this document may be trademarks of their respective companies, and they are mentioned for identification purposes only. Copyright © Nokia Corporation 2006. All rights reserved. Reproduction, transfer, distribution or storage of part or all of the contents in this document in any form without the prior written permission of Nokia is prohibited.

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Contents

Contents Cont Conten ents ts 3 1

CE marking

2

FCC Part 15 compliance

3 3.1 3.1 3.2 3.3 3.3 3.4 3.4

3.6 3.6 3.7

Environmental requirements 9 Envi Enviro ronm nmen ental tal spec specif ific icat atio ions ns and and requ requir irem emen ents ts for a stan standd-al alon one e BTS BTS 9 Ins Instal tallati latio ons with cabinet 11 Envi Enviro ronm nmen ental tal spec specifi ifica catio tions ns and and requ requir irem emen ents ts for for modu module les s in FCIA FCIA 12 Envi Enviro ronm nmen ental tal spec specifi ifica catio tions ns and and requ requir irem emen ents ts for for modu module les s in FCOA FCOA without air filter 13 Envi Enviro ronm nmen ental tal spec specifi ifica catio tions ns and and requ requir irem emen ents ts for for modu module les s in FCOA FCOA with with air filter 14 Safet Safety y dist distan ance ce requ requir irem emen ents ts (com (compl plia ianc nce e boun bounda dari ries es)) 15 Compliance with EMC EMC, RF and safety 24

4 4.1 4.2 4.2. 4.2.1 1 4.3 4.4 4.4 4.5 4.5 4.6 4.7 4.7 4.8 4.8

Site requirements 27 Pla Planning and preparing the site 27 Site requirements 27 Ind Indoor oor site ite requ requir irem emen ents ts 28 Fee Feederless site requirements 29 Pole Pole inst instal alla lati tion on req require uireme ment nts s 30 Wall all ins install tallat atio ion n requ requir irem emen ents ts 32 Module clearances 34 FCIA FCIA clea clearrance ances s and and ancho nchori ring ng hole holes s 36 FCOA FCOA clea cleara ranc nces es and and anc anchori horing ng hole holes s 39

5 5.1 5.2 5.3 5.3 5.4 5.4

Power requirements 43 Grounding requirements 43 Mains power requirements 44 BTS BTS powe powerr cons consum umpt ptio ion n and and batt batter ery y back backup up time times s Over Overvo volt ltag age e prot prote ectio ction n requ requir irem emen ents ts 47

6 6.1 6.2 6.3

Dimensions and weights 49 49 Mod Module dimen mensions and weight 49 FCIA dimensions and weight 51 FCOA dimensions and weight 52

7

3rd party cabinet requirements

3.5 3.5


5

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CE marking

1

CE marking marking

0523 DN02246819

Figu Figure re 1.

CE mark markin ing g

Hereby, Nokia Corporation declares that this Nokia Base Station is in compliance with the essential requirements and other relevant provisions of Directive: 1999/ 5/EC.


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FCC Part 15 compliance

2

FCC Part 15 compliance This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. Changes or modifications not expressly approved by the party responsible for compliance could void the user´s authority to operate the equipment.


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Environmental requirements

3 3.1

Environmental requirements Environmental specifications and requirements for a stand-alone BTS Nokia Flexi WCDMA stand-alone BTS (modules installed without a cabinet) can operate under the environmental specifications defined in the tables below. When choosing an installation location for Nokia Flexi WCDMA stand-alone BTS, notice that heat and moisture may damage the equipment. Install the base station preferably away from direct sunlight, and protect the BTS from direct rain, splash water and salt fog.

Table 1.

Climatic conditions for operation

Property

Value

Transportation requirements

ETSI 300 019-1-2, Class 2.3, climate conditions according to class 2.3 (for singe module, in packing)

Storage requirements

ETSI 300 019-1-1, Class 1.2 (for singe module, in packing)

Operational requirements

ETSI 300 019-1-3, class 3.2 (indoor site) ETSI 300 019-1-4, class 4.1 (outdoor site)

Wind driven rain

GR-487-CORE MIL-STD 810E method 506.3 for Rainfall rate 15 cm/hr and Wind velocity 33 m/s


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Table 1.

Climatic conditions for operation (cont.)

Property

Value

Salt fog and dust

IEC 721-2-5 IEC 68-2-52/Kb, Stress level 1 with 0,44% salt solution by weight. This corresponds to IEC 721-2-5 Humid costal and inland (moderate) environment with < 8mg/(m 2day) salt deposition for outdoor BTS without optional cabinet with air filter. A typical installation location example: 500 m from the seashore.

Ingress Protection

IP55

Safety

IEC-60950-1

Earthquake Requirements

Bellcore GR-63-CORE, Vibrational requirements for earthquake Zone 4 Max. 5 modules in pile, maximum total height 15 U Bellcore GR-63-CORE, Vibrational requirements for earthquake Zone 2 Max. 9 modules in pile, maximum total height 22 U

Operational temperature range

-33°C - +50°C (91.4°F - 122°F) +45°C (113°F) in direct sunlight +55°C (131°F) no guaranteed RF performance

Table 2.

Configuration

1+1+1@ 20 W

Flexi WCDMA BTS acoustic noise (tentative, fan SW control optimization ongoing )

Minimum [dBA]

Typical [dBA]

Max [dBA]

Max [dBA]

(in 15°C, 10 % RF (in 23°C, 50 % RF (in 40°C, 100 % Load) load) Rf load)

(in 50°C, 100 % RF load)

Max. 54

Max. 56

Max. 61

Max. 64

Max. 54

Max. 57

Max. 62

Max. 64

(System with Dual and Single RF Module) 1+1+1@ 40 W 2+2+2@ 20 W (System with Dual and Single RF Module)

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Table 2.

Configuration

Flexi WCDMA BTS acoustic noise (tentative, fan SW control optimization ongoing ) (cont.)

Minimum [dBA]

2+2+2@ 40 W

Typical [dBA]

Max [dBA]

Max [dBA]

(in 15°C, 10 % RF (in 23°C, 50 % RF (in 40°C, 100 % Load) load) Rf load)

(in 50°C, 100 % RF load)

Max. 55

Max. 59

Max. 64

Max. 65

Max. 1.5

Max. 1.5

Max. 1.5

Max. 1.5

4+4+4 @ 20 W (System with three Dual Modules) FPMA effect Add to above values:

If the base station site does not meet the above mentioned requirements, it may be necessary to install the modules inside an outdoor cabinet. See Section Installations with cabinet for more information.

3.2

Installations with cabinet Modules can be installed in an indoor cabinet or an outdoor cabinet without an air filter, when: .

.

.

.

You want to install more than nine modules in a pile (total height over 22 U), you want to install more than five modules in a pile (total height over 15 U) and still meet the Bellcore GR-63-CORE Zone 4 requirement, you want to install the BTS in a separate locked space, installation space for site support or integrated battery backup unit (IBBU) is needed.

Note IBBU can only be installed in outdoor cabinet.


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BTS outdoor cabinet installation with an air filter must be used when standard based operational environmental conditions presented in Environmental specifications and requirements for a stand-alone BTS are exceeded. A cabinet with an optional air filter is needed to provide better environmental conditions for the BTS. Typically, a cabinet with an optional air filter is needed: .

in places where dust is a concern,

.

next to a dusty road with heavy traffic,

.

in sandy terrain with the possibility of wind-blown sand in the air,

.

next to an industrial plant with significant emissions of dust or other particles, such as cement factory, sawmill, and so on,

.

nearby a cornfield with heavy straw dust during harvesting,

.

in places where salt fog or acid rain caused by air pollution is a concern,

.

near sea shore: .

.

.

.

.

3.3

with dense salt fog due to breaking waves, with dense salt fog and line of sight to the sea (not behind a large building), where wind-driven salt fog from sea can be identified.

in site locations where surrounding metal structures show signs of corrosion due to extreme conditions (salt in air), in locations with especially heavy rainfalls and high humidity combined with air pollution.

Environmental specifications and requirements for modules in FCIA Nokia Flexi WCDMA BTS modules inside Flexi Cabinet for Indoor (FCIA) can operate in the climatic conditions as defined in the table below.

Table 3.


Property

Value


ETS 300 019-1-2, Class 2.3


ETS 300 019-1-1, Class 1.2


ETS 300 019-1-3, Class 3.2 GR-63-CORE

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Table 3.


Property

Value

Noise power, night time

55 dB(A)

(in +15 °C, according ISO 3744)

(for 1+1+1 configuration)

Noise power, day time

59 dB(A)

(in +23 °C according ISO 3744)


Noise power, extreme

64 dB(A)

(in +45 °C, according ISO 3744)


Salt fog and dust

IEC 68-2-60/Ke

Ingress Protection

IP22

Safety

IEC 60950-1


Bellcore GR-63-CORE, Zone 4

3.4

Environmental specifications and requirements for modules in FCOA without air filter Nokia Flexi WCDMA BTS modules installed inside Flexi Cabinet for Outdoor (FCOA) can operate in the climatic conditions as defined in the table below.

Table 4.


Property

Value


ETSI 300 019-1-2, Class 2.3, climate conditions according to class 2.3


ETSI 300 019-1-1, Class 1.2


ETSI 300 019-1-4, class 4.1 and IEC class 4M5

Wind Driven rain

GR-487-CORE MIL-STD 810E method 506.3 for Rainfall rate 15 cm/hr. Wind load 67 m/s


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Table 4.


Property

Value

Salt fog and dust

IEC 721-2-5 IEC 68-2-52/Kb, Stress level 1 with 0,44% salt solution by weight. This corresponds to IEC 721-2-5 Humid costal and inland (moderate) environment with < 8mg/(m 2day) salt deposition for outdoor BTS without optional cabinet with air filter. Typical installation location example: 500 m from the seashore.

Noise power, night time (in +15 °C, according ISO 3744)

55 dB(A)

Noise power, day time (in +23 °C according ISO 3744)

59 dB(A)

Noise power, extreme (in +45 °C, according ISO 3744)

64 dB(A)

Ingress Protection

IP55

Safety

IEC-60950-1


Bellcore GR-63-CORE, Zone4

3.5




Environmental specifications and requirements for modules in FCOA with air filter Nokia Flexi WCDMA BTS modules installed inside Flexi Cabinet for Outdoor (FCOA) with an optional air filter can operate in the climatic conditions as defined in the table below.

Table 5.


Property

Value


ETSI 300 019-1-2, Class 2.3, climate conditions according to class 2.3


ETSI 300 019-1-1, Class 1.2


ETSI 300 019-1-4, class 4.1 and IEC class 4M5

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Table 5.


Property

Value

Wind Driven rain

GR-487-CORE MIL-STD 810E method 506.3 for Rainfall rate 15 cm/hr Wind load 67 m/s

Salt fog and dust

IEC 721-2-5 IEC 68-2-52/Kb, Stress level 1 with 5% salt solution by weight This corresponds to IEC 721-2-5 oceanic and coastal environment with > 8mg/(m2day) salt deposition for outdoor BTS with optional air filter.

When installing a cabinet with an air filter on a sea shore, it is recommended that the cabinet is installed with the side wall facing the sea (not the filter or the door). Noise power, night time (in +15 °C, according ISO 3744)

56 dB(A)*

Noise power, day time (in +23 °C according ISO 3744)

60 dB(A)*

Noise power, extreme (in +45 °C, according ISO 3744)

65 dB(A)*

Ingress Protection

IP55

Safety

IEC-60950-1


Bellcore GR-63-CORE, Zone4




*Noise power figures measured with a clean filter.

3.6

Safety distance requirements (compliance boundaries) This section describes compliance with reference levels (based on basic restrictions) for general public and occupational exposure to radio frequency electromagnetic fields Installing base stations to ensure public safety

This equipment generates radio frequency energy, which has a thermal effect when absorbed by the human body. For this reason compliance boundaries specific to this equipment have been established. The thermal effects of radio frequency energy can exceed safety levels when a person is inside the established


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compliance boundaries. Observe the compliance boundary, and make sure the general public has no access to areas inside the established boundaries. The information shown in Warnings and cautions provided section below is taken from the relevant section of Nokia ’s user manual containing warnings and cautions specific to the equipment. Installing base stations to ensure installer safety

Installation engineers need to be aware of the potential risk of the thermal effects of radio frequency energy and how to protect him/herself against undue risk. The information shown in Warnings and cautions provided section is taken from the relevant section of Nokia ’s user manual containing warnings and cautions specific to the equipment. Warnings and cautions provided

Reference safety distances

When working close to transmitter antennas, the proper safety distances must be observed. The minimum safe distance from an antenna is measured in metres.

Warning Do not go any closer to a live antenna than the compliance boundary. The radio frequency energy generated by the antenna poses a serious health risk.

Warning If performing installation or maintenance procedures on a BTS, make sure that all transmitters in the area are switched off.

When assessing the applicable boundaries, the European standards EN 50383, EN 50384, EN 50385 and Council Recommendation 1999/519/EC for occupational and general public electromagnetic exposure limits - see Annex A have been applied. The statements shown below are taken from the Nokia ’s user manual containing warning and cautions specific to the equipment.

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Assessment applying SAR measurements

European standards EN 50383, EN 50384 and EN 50385 do not include specifications for whole body SAR measurements. Whole body SAR measurements are not required for transmitters that have maximum output power levels too low to result in exposure levels that can reach the whole body SAR compliance limits under any conditions. Whole body SAR exclusion power levels have been based on the worst case assumptions. For details, see the table below.

Table 6.

Whole body SAR exclusion power levels

Exposure category

Maximum output power (rms)

General public

Max power [W] = general public whole body SAR limit [W/kg] * 12.5 kg: 4-yearold child body mass = 1 W

Occupational

Max power [W] = occupational whole body SAR limit [W/kg] * 42 kg: 16-yearold worker body mass = 16.8 W

Localised SAR measurements can only be used when: 1.

The separation between the phantom and the outer surface of the energy generating element is 40 cm (15.6 in.) or less.

2.

The surface area of the energy generating element is less than 60 cm (23.6 in.) by 30 cm (11.8 in.).

3.

The frequency is in the range of 800 to 3000 MHz.

For the reasons above, SAR measurements are not applicable to Nokia Flexi WCDMA Base Station. Assessment of compliance boundary

The compliance boundary is defined as the area around the antenna shown in the Area around the antenna figure below. The antenna is located at the origo. Distances from the antenna are shown. The top and side views are shown in the Antenna side and top view figure below, in Picture 1 and Picture 2.


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Dside

Dup

back

Dside

0

front

0

Ddown Drear

Dside

0 Dfront

front

DN03400968

Figure 2.

Area around the antenna

2

1 Dside front

Dup

Dside back

Dfront

Dfront

triangle

Drear

Drear

triangle Dfront

Dside back

Dside

Ddown

front

DN03400995

Figure 3.

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Antenna side and top view

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The compliance boundaries for Nokia Flexi WCDMA Base Station 1,7/2,1 are given in the tables below for different power levels at the antenna input. Typical and worst case power level configurations for general public (GP) and occupational (O) exposure limits are included in the tables below.

Table 7.

Dfront

Dimensions of compliance boundary in meters (General Public) Dfronttriangl

Drear

Dsideback

Dsidefront

Dup

Ddown

e

Freq. (MHz)

Power at antenna input

GP

GP

GP

GP

GP

GP

GP

900

40

7

2.4

0.3

0.4

2

0.95

0.95

1700

40

4.4

1.2

0.1

0.2

1.5

0.6

0.6

1800

40

4.4

1.2

0.1

0.2

1.5

0.5

0.5

2100

40

4.7

1.5

0.1

0.4

1.5

0.6

0.6

Dup

Ddown

Table 8.

Dfront

Dimensions of compliance boundary in meters (occupational) Dfronttriangl

Drear

Dsideback

Dsidefront

e

Freq. (MHz)

Power at antenna input

O

O

O

O

O

O

O

900

40

2.95

1

0.05

0.2

0.6

0.85

0.85

1700

40

1.9

1.1

0.1

0.2

0.45

0.48

0.48

1800

40

2.1

1.1

0.1

0.2

0.65

0.45

0.45

2100

40

1.95

0.7

0.1

0.25

0.5

0.6

0.6

The component specifications for 900 MHz and 1800 MHz also apply to 850 MHz and 1900 MHz products, respectively, and can be used to demonstrate compliance with FCC guidelines for human exposure to radio frequency electromagnetic fields contained in FCC document OET Bulletin 65 (August 1997). Typical configuration

The antenna is connected through a connector and cable(s) to the base station as shown in the figure below.


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Antenna

Antenna connector Cable

To the base station DN03401004

Figure 4.

Antenna connection to the BTS

Table 9.

A detailed description of the components

Power (P out )

20 W

Total connector loss

0.0 dB

Total cable loss

0.0 dB

Total Loss ( L) = Total connector loss + Total cable loss

0.0 dB

Number of transmitter unit ( N )

1

Power at antenna input =

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P out N 10

-L / 10

20 W



The worst-case power level configuration is when N is 2 and there is no loss. In such a case, the power at antenna input is 40 W.

Table 10.

A typical antenna specification

Frequency

2100 MHz

1700 MHz

1800/1900/2100 MHz

Gain

17.2 dBi

17 dBi

17.2 dBi

Half-power beam width

H-plane: 68 deg.

H-plane: 60 deg.

H-plane: 68 deg.

E-plane: 10 deg.

E-plane: 10 deg.

E-plane: 10 deg.

Electrical downtilt

0 deg.

0 deg.

0 deg.

Height/width/depth

1000 / 200 / 100 mm

1100 / 200 / 100 mm

1100 / 200 / 100 mm

When using different configurations

IMPORTANT: .

.

In tables 'Dimensions of compliance boundary in meters for general public (GP)' and 'Dimensions of compliance boundary in meters (Occupational)' the compliance boundaries are given for different power levels, including the typical and worst case levels. If an exposure limit, antenna, and/or configuration is used which does not correspond to the levels given in tables 'Dimensions of compliance boundary in meters for general public (GP)' and 'Dimensions of compliance boundary in meters (Occupational)', the compliance boundary must be re-calculated according to EN50383. The formula for calculating the compliance boundary using the farfield model, which is referenced in EN50383, is given in ANNEX B later in this section. This model is applicable for calculating the compliance boundary for the far-field region and over estimates the compliance boundary for the radiating near-field region, but is not applicable for calculating the compliance boundary for the reactive near-field region where the distance from the antenna is less than or equal to λ / 4.

ANNEX A: Council recommendation 1999/519/EC for occupational and general public electromagnetic exposure limits

Table 11.

Basic restrictions

Exposure characteristics


Frequency range

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Whole body average SAR (W kg-1

Localised SAR (head and trunk) W kg -1

Localised SAR (limbs) W kg -1

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Table 11.

Basic restrictions (cont.)

Occupational exposure

10 MHz - 10 GHz

0.4

10

20

General public exposure

10 MHz - 10 GHz

0.08

2

4

Note All SAR values are to be averaged over any period of 6 minutes.

Note Localised SAR averaging mass is any 10 g of contiguous tissue: the maximum SAR so obtained should be the value used for the estimation of exposure.

Note Basic restrictions between 10 GHz and 300 GHz are given in power densities. For occupational exposure, it is 50 Wm -2 and for general public exposure 10 Wm -2.

Table 12.

Reference values calculated from basic restrictions

Exposure characteristics

Frequency range

Electric field strength V/m

Equivalent plane wave power density S (W m-2)

Occupational exposure

10 - 400 MHz

61

10

400 - 2000 MHz

3f 1/2

f/40

2 - 300 GHz

137

50

10 - 400 MHz

28

2

400 - 2000 MHz

1.375f 1/2

f/200

2 - 300 GHz

61

10

General public exposure

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f is frequency in MHz

.

for frequencies between 100 KHz and 10 GHz, S is to be averaged over any period of 6 minutes

.

for frequencies exceeding 10 GHz, S is to be averaged over any period of 68/f 1.05 minutes (f in GHz)

.

ANNEX B: Far-field calculation method

This model is applicable for calculating the compliance boundary for the far-field region and over estimates the compliance boundary for the radiating near-field region, but is not applicable for calculating the compliance boundary for the reactive near-field region where the distance from the antenna is less than or equal to λ /4, which is 3.75 cm at 2000 MHz. Therefore, all calculations are valid when the compliance boundary is greater or equal to the antenna dimensions plus λ /4. The minimum safety distance (compliance boundary) in metres, or 'r min', is calculated according to the following equation:

r min

=

(G - L) / 10 N 10 Pout 4p S DN02152589

Figure 5.

Formula for safety distances

The meaning of each formula component is as follows: .

.

G is the antenna gain (in dB)

.

L is the minimum cable losses (in dB)

.

.


N is the number of transmitter units per one antenna

Pout is the maximum power of one transmitter unit (in W) S is the maximum power density limit (in W/m²)

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Note In the far-field, the field calculation does not take into account the antenna size, which is assumed to be a point source. Therefore, when calculating the compliance boundary, the far-field data, antenna size and reactive field criteria have to be taken into account.

3.7

Compliance with EMC, RF and safety In Europe this means compliance with Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment and the mutual recognition of their conformity. In other market areas additional compliance is fulfilled according to relevant authority requirements. EMC emission .

.

.

.

ETSI EN 301 489-1: Electromagnetic compatibility and Radio spectrum Matters (ERM); ElectroMagnetic Compatibility (EMC) standard for radio equipment and services; Part 1: Common technical requirements. EN55022 (1994): "Limits and methods of measurement of radio disturbance characteristics of information technology equipment". 3GPP TS 25.113: 3rd Generation Partnership Project; Technical Specification Group Radio Access Networks; Base station and Repeater electromagnetic compatibility (EMC). FCC Code of Federal Regulations (CFR) 47, Part 15 "Radio Frequency Devices"

EMC immunity .

.

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ETSI EN 301 489-1: ‘Electromagnetic Compatibility and Radio Spectrum Matters (ERM); Electromagnetic Compatibility (EMC) standard for radio equipment and services - Part 1: Common technical requirements ’. ETSI EN 301 489-23: ‘ Electromagnetic Compatibility and Radio Spectrum Matters (ERM); Electromagnetic Compatibility (EMC) standard for radio equipment and services - Part 23: Specific conditions for IMT-2000 CDMA Direct Spread (UTRA) Base Station (BS) radio, repeater and ancillary equipment ’.

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.

.

.

3GPP TS 25.113: 3rd Generation Partnership Project; Technical Specification Group Radio Access Networks; Base station and Repeater electromagnetic compatibility (EMC). IEC 1000-4-9: Pulse magnetic field immunity test. IEC 1000-4-8: "Electromagnetic Compatibility (EMC) Part 4. Testing and measurement techniques Section 8: Power frequency magnetic field immunity test, Basic EMC Publication".

RF .

.

.

.

.

.

.

ETSI EN 301 908-1: ‘Electromagnetic Compatibility and RadioSpectrum Matters (ERM); Base Stations (BS) and User equipment (UE) for IMT2000 third-generation cellular networks - Part 1: Harmonized standard for IMT-2000, introduction and common requirements, covering essential requirements of article 3.2 of the R&D Directive ’. ETSI EN 301 908-3: ‘Electromagnetic Compatibility and Radio Spectrum Matters (ERM); Base Stations (BS) and User equipment (UE) for IMT2000 third-generation cellular networks - Part 3: Harmonized standard for IMT-2000 CDMA Direct Spread (UTRA FDD) (BS) covering essential requirements of article 3.2 of the R&D Directive ’. 3GPP TS 25.141: ’3rd Generation Partnership Project; Technical Specification Group Radio Access Networks; Base station conformance testing (FDD) ’ FCC Code of Federal Regulations (CFR) 47, Part 22 "Public Mobile Services" FCC Code of Federal Regulations (CFR) 47, Part 24 "Personal Communication Services" FCC Code of Federal Regulations (CFR) 47, Part 2 "Frequency Allocations and Radio Treaty Matters; General Rules and Regulations" FCC Code of Federal Regulations (CFR) 47, Part 27 "Advanced Wireless Services"

Safety .

.


IEC 60950-1/ EN 60950-1: ‘Safety of Information Technology equipment including electrical business equipment ’. EN 50383: Basic standard for the calculation and measurement of the electromagnetic field strength and SAR related to human exposure from radio base stations and fixed terminal stations for wireless telecommunications system (110 MHz - 40 GHz)

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.

.

.

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EN 50384: Product standard to demonstrate the compliance of radio base stations and fixed terminal stations for wireless telecommunications systems with the basic restrictions or the reference levels related to human exposure to radio frequency electromagnetic fields (110 MHz - 40 GHz) Occupational EN 50385: Product standard to demonstrate the compliances of radio base stations and fixed terminal stations for wireless telecommunications systems with the basic restrictions or the reference levels related to human exposure to radio frequency electromagnetic fields (110 MHz - 40 GHz) General public UL 60950-1: "Safety of Information Technology Equipment"

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Site requirements

4

Site requirements

4.1

Planning and preparing the site Purpose

Before installing the BTS, the site must be properly surveyed and prepared, and all required external connections must be correctly installed. Any special requirements for installation must also be identified during the survey.

Steps 1.

Check that the BTS can be installed safely: .

.

Site is prepared according to drawings.

.

Site survey is complete.

.

Site Survey Report is available.

.

Site is clean.

.

Product delivery is complete.

.

All wiring is done in accordance with national electric code.

.

4.2

Safety distance calculations are made and taken into account. See Section Safety distance requirements (compliance boundaries) .

.

.

2.

The site is accessible, adequately lit and safe for working.

Needed equipment is available as defined in the Site Survey Report. Sufficient service clearances are available.

Verify that the following external cabinet connections are available: .

Grounding busbar,

.

Mains power (AC or DC, depending on the site),

.

Transmission connection point.

Site requirements Ensure that the following BTS site requirements are met:


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4.2.1

1.

All required documentation is available, for example, site-specific installation instructions.

2.

When radio link transmission is used, the line-of-sight to the far end radios has been ensured.

3.

External connections for the cabinet are available: site grounding point, mains power (AC or DC according to the site), and transmission connection point. Also AC or DC distribution panel and AC electric are available for power tools.

4.

Main grounding (earthing) is installed and tested.

5.

Floor or wall surface is even (installation base flatness requirement is 2 mm (0.08 in.).

6.

Wall or pole at the BTS site is strong enough to withstand the weight of the BTS.

7.

Wall or pole at the BTS site is strong enough to meet earthquake requirement Bellcore GR-63 core Zone 4.

8.

Pole at the BTS site is strong enough to withstand the wind load.

9.

The BTS is not taken out of its delivery package until the site construction work is finished and the site is clean and dry.

10.

Site security is established so the BTS and other units can remain undisturbed at the site.

11.

Make sure you can take the BTS to the installation site. For example, in roof top installations, the hole through which you take the BTS to the roof must be large enough.

Indoor site requirements If installing the BTS to an indoor site, ensure that the following indoor BTS site requirements are met: .

.

Access to the site is secure.

.

Site is adequately lit.

.

.

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Door and lock to site room are properly installed and operational (recommended).

Feeder entry hole and cable rack for feeder and power cables are ready, if needed. Heater, or air conditioner, is installed and operational, if needed. This depends on the heat emission and the environment.

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Site requirements

4.3

Feederless site requirements The feederless site requirements are described in the following tables.

Table 13.

Flexi Power AC/DC sub-module for RF Module Single (FPAB)

Property

FPAB AC sub-module for RF Module Single

Nominal AC voltage [V]

100 …240 (1-phase)

Optional Permitted AC operating voltage and frequency fluctuation (external supply range) [V] [Hz]

90 … 276 VAC @ 400 W DC output Max. 315 +/-5 VAC overvoltage up to 3 minutes 45 … 66 Hz

Output

-56 VDC 400 W

Weight

< 2.6 kg

Protection class

IP 67

Operating temperature

-35 … +55 °C (without solar load)

Installation

Inside Flexi RF Module Single

Note If 3rd party DC power supply is in use, the voltage in RF Module input port has to be min. 40.5 VDC.

Table 14.


Nokia requirements for a shielded, locally sourced DC cable

Property

DC cable requirements

Resistance

< 1ohm / km

Inductance

< 0,3 mH / km

Length

Max. 100 meters between DC supply and Nokia Flexi RF Module (Single)

Diameter

Min. x 16 mm 2 twisted

Shielding

Min. 16 mm 2

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Table 15.

Requirements for optical interface

Property

Optical interface

Nokia IP55 cable length

50 or 100 meters Two cables can be connected to 150 or 200 meters.

LC duplex optical connector

ANSI TIA/EIA604-10 (FOCIOUS10)

Conventional OM2 duplex multimode fibre, connection to SFP module

(ISO-11801), ITU G.651 OFL BW 500 MHz*km 50/125 um (core/cladding diameter)

4.4

Allowed attenuation

Approx. 0.75 dB/ connection

Operating temperature

-40 … +85°C

Installation temperature

-20 … +50°C

Minimum bend radius

70 mm

Max. crush resistance

750 N/cm

Max. tensile load

500 N

Weather protection

Min. IP55 with Nokia cable connector

Pole installation requirements The optional pole mounting kit enables Nokia Flexi WCDMA BTS installation on a pole 60-300 mm in diameter. Up to four modules can be fitted in one pole mounting kit.

Note Only two modules can be installed per plinth.

When installing modules on a pole, make sure that the pole at the BTS site is strong enough to withstand the weight of the BTS, to meet earthquake requirement Bellcore GR-63 core Zone 4, and the wind load requirement.

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Site requirements

DN7083024

Figure 6.

Wind load calculations, side view

When the wind area is as in the Wind load calculations, side view figure, the area used for wind load calculations is 0.33 m 2.


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4

3

1

2

DN7083036

Figure 7.

Wind load calculations, front view

When the wind area is as in the Wind load calculations, front view figure, the area for wind load calculations depends on the number of installed modules. See the table below for more information.

Table 16.

4.5

The area for wind load calculations

Number of modules

Area

1

0.12 m 2

2

0.18 m 2

3

0.30 m 2

4

0.36 m 2

Wall installation requirements The optional mounting kit for floor, wall and pole (FMFA) enables Nokia Flexi WCDMA BTS installation on a wall.

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Site requirements

The following requirements must be filled when modules are installed on the wall: .

.

.

.

It must be ensured that the installation wall is strong enough to bear the weight of the BTS in any condition. The wall must meet earthquake requirement Bellcore GR-63 Core. The module fixing screws (4 pcs) and module casing must be tightened to 5 Nm to meet the earthquake requirement Bellcore GR-63 Cor, Vibrational requirements for earthquake Zone 4.

.

The maximum number of modules per plinth is two.

.

For full configuration, three plinths must be used.

.

.


Qualified personnel must inspect the installation wall before mounting the BTS.

Modules must be installed in horizontal alignment, cabling direction up and down.

 Module bottoms must be installed facing the wall.

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min 100 mm (3.9 in.)

DN7037094

Figure 8.

4.6

Installation example: modules on the wall

Module clearances The minimum clearances around the modules are presented in the following table and figure.

34 (54)

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Site requirements

Table 17.

Required minimum clearances

Property

Value

Front space

600 mm (23.6 in. front maintenance space)

Back space

50 mm (2.0 in. intake air space) 200 mm (7.9 in. to remove back cover and change fan)

Top space

30 mm (1.2 in.)

Space on both sides

75 mm (3.0 in. with front covers)

Space on both sides (if two base stations are installed side by side on floor or wall)

100 mm (3.9 in.)

min 40 mm (1.6 in.) no back access

min 75 mm (3.0 in.) min 600 mm ( 23.6 in.)

Figure 9.

DN7038151

Minimum clearances around the stand-alone base station

Tip Fans can also be changed without minimum clearances, with no back access, but this requires removing the unit from the casing or the cabinet.


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4.7

FCIA clearances and anchoring holes See the following table and figures for required clearances around Nokia Flexi Cabinet for Indoor (FCIA).

Table 18.

Cabinet clearances

Property

Required clearance

Front of the cabinet

900 mm (35.4 in.)

Behind the cabinet

50 mm (2 in.)

Behind the cabinet (with maintenance space in the back)

500 mm (19.7 in.)

Space on the door hinges side of the cabinet

50 mm (2.0 in.)

Door swing radius

600 mm (23.6 in.)

Above the cabinet

300 mm (11.8 in.)

A 50 mm backstop is included in the cabinet delivery. The clearance behind the cabinet is measured from the back wall of the cabinet.

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# Nokia Corporation


Site requirements

Top view

300mm (11.8 in)

600 mm (23.6 in)

50 mm (2.0 in)

Front

570 mm (22.4 in) Maintenance space

500 mm (19.7 in)

Door swing radius 600 mm (23.6 in)

900 mm (35.4 in)

DN7083227

Figure 10.


Clearances around the indoor cabinet

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71.5 mm (2.8 in)

457 mm (18.0 in)

71.5 mm (2.8 in)

Back stop Facility wall 179 mm (7.0 in) X

X

300 mm (11.8 in)

570 mm 620 mm (22.4 in) (24.4 in) X

X

Front 600 mm (23.6 in) X - Location of earthquake anchor holes DN7083242

Figure 11.

38 (54)

FCIA fixing points, minimum clearances

# Nokia Corporation


Site requirements

71.5 mm (2.8 in)

457 mm (18.0 in)

71.5 mm (2.8 in)

Facility wall

Back stop

629 mm (24.8 in) X

X

300 mm (11.8 in)

570 mm 1070 mm (22.4 in) (42.1 in) X

X

Front 600 mm (23.6 in) X - Location of earthquake anchor holes

DN7086669

Figure 12.

FCIA fixing points with maintenance space in the back

Anchoring holes

The cabinet is anchored to the ground using four M10 or M12 bolts.

4.8

FCOA clearances and anchoring holes See the following table and figure for required clearances around Flexi Cabinet for Outdoor (FCOA).


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Table 19.

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Cabinet clearances

Property

Required clearance

Front of the cabinet

800 mm (31.5 in.)

Behind the cabinet (one cabinet installed)

0 mm/in.

Behind the cabinet (several cabinet installed in a row)

100 mm (4 in.)

Behind the cabinet (with back access)

500 mm (19.7 in.)

Behind the cabinet (with air filter and cables routed via back)

1000 mm (39.3 in.)

Behind the cabinet (with air filter and cables routed via side or via bottom)

450 mm (17.7 in.)

Door opening direction

50 mm (2 in.)

Door opening with wind breaker

80 mm (3.2 in.)

Above the cabinet

500 mm (19.7 in.)

# Nokia Corporation


Site requirements

Bottom view 770mm (30.3 in)

75 mm (3.0 in)

620 mm (24.4 in)

) n i

) n i

6 . 2 2 (

3 . 0 3 (

m m 0 7 7

m m 5 7 5

Front side

Top view

Isometric view 500mm (19.7 in)

Front

500 mm (19.7 in)

with maintenance

800 mm

space

(31.5 in)

50 mm (2.0 in) 80 mm (if windbreaker is installed)

DN7067652

Figure 13.


Cabinet clearances and anchoring holes

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Anchoring holes

The cabinet is anchored to the ground using four M12 bolts. Additional four holes are available for backup purposes, in case the actual holes cannot be used for some reason.

42 (54)

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Power requirements

5

Power requirements

5.1

Grounding requirements Grounding is required to ensure personnel safety and to avoid electrostatic discharge which can damage the equipment. To protect the BTS from damaging overvoltages through antenna equipment, communication cables, or power supply lines, grounding cabling must be planned and installed before the installation of the base station. To avoid interference, it is recommended that large grounding systems are designed case-specifically. A power plug with a protective ground connection is not sufficient for Nokia Flexi WCDMA BTS. Grounding must have a fixed, non-removable connection.

Note Follow local requirements for earthing (grounding). The principles and requirements vary in different countries.

Observe the following recommendations when planning the BTS grounding: .

.

The grounding cable is connected with screws to the BTS grounding point. The minimum cross-section of the copper (Cu) grounding conductor is following: .

.

.

.


Grounding cable cross-section has to be more than any of AC or DC power feeding cable cross-section. When 220-240 VAC is used, power cables shall be 1.5 - 2.5 mm (15...13 AWG) and grounding cable 2.5 mm 2 (13 AWG).

2

When 100-110 VAC is used, power cables shall be 1.5 - 2.5 mm 2 (15...13 AWG) and grounding cable 4 mm 2 (11 AWG). When 48 VDC is used, power cables shall be 6 - 10 mm 2 (9...7 AWG) and grounding cable 6 mm 2 (9 AWG).

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.

.

.

.

5.2

The earthing (grounding) resistance target of the BTS site is =10 Ω. If it is not possible to reach this target due to difficult conditions, for instance in areas such as solid rocks or dry desert, the earthing (grounding) resistance can be max. 150 Ω. The ground cable must be connected to a main grounding busbar. Route the ground cables as directly as possible from the equipment to the grounding point. Avoid unnecessary loops and sharp bending of the grounding cable. The ground cables should not be run parallel with power cables. The external antenna feeders must also be grounded according to the local legislation if the antennas are exposed to lightning.

Mains power requirements Warning Danger of lethal voltages! Make sure that the mains power breaker is off, and that the cabinet is properly earthed (grounded), before removing any connections from the cabinet.

Ensure that the site has a main switch for disconnecting the site power. The disconnecting device shall disconnect both input supply poles simultaneously. The cross-sectional area of the Main Earthing Conductor (PE) shall not be less than live and neutral conductors nor less than 6 mm 2. The impedance of the earth connection shall be as low as possible.

Table 20.

Permitted operating voltage

Property

Nominal operating voltage

Permitted operating voltage

DC voltage

48 VDC

40.5 to 57 VDC

AC voltage with optional AC Module

200 - 240 VAC

184 to 276 VAC (45 - 66 Hz)

DC voltage with optional DC Module

24 VDC

18 to 32 VDC

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Power requirements

5.3

BTS power consumption and battery backup times See the following table for power consumption of Flexi Modules and BBU times with FPMA.

Estimated power consumption [W] Estimated typical BBU time at 48 VDC input in 23 °C (23°C) for one module with typical 50 % load and new fresh battery Flexi WCDMA Module

Typical 10 % Typical 50 % Typical 100 load load % load

FPMA +FPAA + 1 FPBA

FPMA +FPAA+ 2 FPBAs

FPMA +FPAA+ 3 FPBAs

System Module FSM

60

90

120

80 min.

160 min.

240 min.

RF Module Single

123

152

183

65 min.

130 min.

195 min.

151

200

255

50 min.

100 min.

150 min.

20 W mode (FRGD, FRxB) RF Module Single 40 W mode (FRGD,FRxB)

See the following table for Nokia Flexi WCDMA BTS power consumption values at 48 VDC input in 23°C.

Table 21.

Tentative typical and maximum power consumptions for Nokia Flexi WCDMA BTS configurations

Configuration Estimated typical power consumption [W] at 48 VDC input with

Estimated typical BBU time (23°C) with typical 50 % RF load and new batteries Separate battery with MIBBU

10 % RF load

50 % RF load

100 % RF load

92 Ah

62 Ah

1 carrier omni (min. 20 W)

190

250

300

16 h

11 h

1+1+1 (min. 20 W)

400

FPMA & FPBA with FPAA up to 120 (3 FPBAs) up to 40 (1 FBPA)

510

630

7 h 30 min

5h

up to 59 (3 FPBAs) up to 20 (1 FBPA)


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Table 21.

1+1+1 (min. 40 W)

490

Tentative typical and maximum power consumptions for Nokia Flexi WCDMA BTS configurations (cont.)

660

850

5 h 30 min

4h


2+2+2 (min. 20 W)

490

660

850

5 h 30 min

4h


2+2+2 (min. 40 W per carrier)

860

1180

1530

3 h 15 min

2 h 15 min

up to 17 (2 FPAAs + 2 FPBAs)

860

1180

1530

3 h 15 min

2 h 15 min

up to 17 (2 FPAAs + 2 FPBAs)

Flexi Outdoor 60 (clean) cabinet Filter (FCFA) fan

100

180 (dirty)

N/A

N/A

N/A

Flexi Outdoor 34 at 23 C cabinet Site Support (FCSA) HEX fans

94 at 55 C

N/A

N/A

N/A

(3 x FRGC/ FRxA) 4+4+4 (min. 20 W per carrier) (3 x FRGC/ FRxA)

˚

˚

Basic typical conditions:

46 (54)

.

E1 transport used

.

room temperature 23°C

.

80 CE HW .

for 240 CEs HW, add 30 W

.

for 480 CEs HW, add additional 100 W

.

no MHA power feeding included

.

no antenna tilting power feeding included

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Power requirements

Flexi BTS site maximum power consumption consists of 2x30 W power feed to MHA + antenna tilt. Up to 50 W/ 100 W (single/dual) higher power consumption can exist in extreme conditions and in BTS output power overdrive situations. In possible short circuit cases (for instance, antenna line), power consumption can momentarily be higher.

Note Values are given for 2.1 GHz RF module. For other RF Module variants, there is max. +10 % power consumption increase.

The values do not include optional cabinet (FCOA) and optional site support (FCSA) power consumption. For microwave transmission sub-module case (FTFA), add max. 50 W. The estimated maximum heat load can be assumed to be the same as the power consumption values.

5.4

Overvoltage protection requirements The requirements for overvoltage protection are described in the tables below. .

.

.

Supply voltage Nominal 48 V DC according ETSI 300 -132 Protection level U p (Line – Line) < 500 V (at I n, 8 / 20 us) Protection level U p (Line – Ground) < 1000 V (at I n, 8 / 20 us)

Table 22.

Nokia requirements for overvoltage protection (common mode) OVP Class II (C/T2) requirements for common mode

Voltage protection level, Up

<0.5 kV

Nominal discharge current, In

15 kA

Max. discharge current, Imax

40 kA

Response time, tA

<25 ns


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Table 23.

Nokia requirements for overvoltage protection (differential mode) OVP Class II (C/T2) requirements for differential mode

Voltage protection level, Up

<1 kV

Nominal discharge current, In

20 kA

Max. discharge current, Imax

40 kA

Response time, tA

<100 ns

48 (54)

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Dimensions and weights

6


6.1

Module dimensions and weight The table below presents the dimensions and weights of Nokia Flexi WCDMA BTS modules.

Table 24. Property

System Module FSM

Height

133 mm/3U

Dimensions and weights of Nokia Flexi WCDMA BTS Dual RF Module

Single RF Module

Power Module FPMA

20.1 kg

FPMA 11 kg (empty rack)

1 U = 44.46 mm Width

447 mm (with casing)

Depth

422 mm (without covers) 560 mm (with covers)

Weight (max)

max. 18 kg (without transmission sub-module)

23.2 kg

FPAA 3.2 kg FPBA 3.8 kg

Transmission sub-module: max. 4 kg


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447 mm (17.6 in.)

133 mm (5.2 in.)

422 mm (16.6 in.)

DN7038148

Figure 14.

50 (54)

Module dimensions without covers

# Nokia Corporation



133 mm (5.2 in.)

560 mm (22.0 in.)

490 mm (19.3 in.)

DN7039353

Figure 15.

6.2

Module dimensions with covers

FCIA dimensions and weight See the following table for the dimensions and weight of the Flexi Cabinet for Indoor (FCIA).

Table 25.

Dimensions and weight of Flexi Cabinet for Indoor (FCIA).

Property

Value

Height

1800 mm (70.87 in.)

Width

600 mm (23.62 in.)

Depth

600 mm (23.62 in.)


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Table 25.

6.3

Dimensions and weight of Flexi Cabinet for Indoor (FCIA). (cont.)

Property

Value

Weight

62 kg

(empty cabinet)

(136 lbs.)

FCOA dimensions and weight See the following table for the dimensions and weight of the Flexi Cabinet for Outdoor (FCOA).

Table 26.

Dimensions and weight of the Flexi Cabinet for Outdoor (FCOA)

Property

Value

Height

1550 mm (61 in.)

Width

770 mm (30.3 in.)

Depth

770 mm (30.3 in.)

Depth with air filter

930 mm (36.6 in.)

Depth with air filter and wind breaker

1020 mm (40.2 in.)

52 (54)

Weight

Max. 80 kg

(empty cabinet)

(177 lbs)

Weight

104 kg

(with air filter)

(230 lbs)

Weight

110 kg

(with air filter and wind breaker)

(243 lbs)

Total weight

365 kg

(Fully equipped with batteries)

(807 lbs)

Free space for modules

40 U

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3rd party cabinet requirements

7

3rd party cabinet requirements Basic requirements for a 3rd party cabinet

The basic requirements for a 3rd party cabinet are the following: .

19-inch rack with site trays

.

Minimum depth 600 mm (23.6 in.)

.

Rear air intake

.

Front exhaust

.

Proper cable routing

.

DC power to the BTS

.

The operating temperature in the cabinet must be -33...+55°C (-27°F... +131°F)

Requirements for Flexi BTS module level cooling in a 3rd party cabinet

A Flexi BTS module shall be installed in the cabinet without the rear side and front side plastic covers. The air volume flow requirement for one Flexi BTS module is 140 m 3/h. The pressure drop caused by the rear side wall and front door (wall) for one module fan can at the maximum be 25 Pa (including the combined pressure drop for both walls) with an air volume flow of 140 m 3/h. Flexi BTS modules cooling fans ’ minimum distance to any obstacle in the rear side of the cabinet is 40 mm (1.6 in.). The BTS power consumption must be taken into consideration when planning site cooling.


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Nokia+3G+Requirements+for+Installation+and+Operation

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