Overhead Line Design Standard Transmission Distribution System

TS-107 - Overhead Line Design Standard for Transmission & Distribution Systems

Technical Standard - TS-107 TS- 107 Overhead Line Design Standard for Transmission & Distribution Systems

Published: 7 December 2012

SA Power Networks www.sapowernetworks.com.au

TS-107

Authorised: Jehad Ali

Date of Publication: 07 December 2012

The use of this Technical Standard is subject to the conditions stated in SA Power Networks disclaimer in front of this document.

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TS-107 - Overhead Line Design Standard for Transmission & Distribution Systems Please Note: Appendix F and Appendix G are not included in this document but can be found in a separate file on the SA Power Networks intranet site.

Revision Notice: Date

Explanation 

September 2010 

3 September 2012 

7 December 2012

 

Interim update to TS107. Appendix-B table: “WB Su b-Transmission Poles” on pages 25, 26, & 27 updated only. Company name change only. No other content of this Technical Standard has been altered. Any revision markings are from the September 2010 edition. Amended Format and Enhanced Appendix-A only. No other content of this Technical Standard has been altered. Changes to be followed as of September 2010 edition.

SA Power Networks: SA Power Networks means Distribution Lessor Corporation subject to a two hundred year lease to the partnership of companies trading as SA Power Networks or SA Power Networks in its own right. SA Power Networks, ABN 13 332 330 749, a partnership of: Spark Infrastructure SA (No.1) Pty Ltd, ABN 54 091 142 380 Spark Infrastructure SA (No.2) Pty Ltd, ABN 19 091 143 038 Spark Infrastructure SA (No.3) Pty Ltd, ABN 50 091 142 362 each incorporated in Australia. CKI Utilities Development Limited, ABN 65 090 718 880 PAI Utilities Development Limited, ABN 82 090 718 951 each incorporated in The Bahamas. 1 Anzac Highway, Keswick, South Australia, 5035.

SA Power Networks Disclaimer: 1. The use of the information contained in this Technical Standard is at your sole risk. 2. The information in this Technical Standard is subject to change without notice. 3. SA Power Networks, its agents, ag ents, instrumentalities, officers and employees: a) Make no representations, express or implied, as to the accuracy of the information contained in this Technical Standard; b) Accept no liability for any use of t he said information or reliance placed on it; and c) Make no representations, either expressed or implied, as to the suitability of the said information i nformation for any particular purpose. 4. SA Power Networks and its agencies and instrumentalities do not endorse or in any respect warrant any third party products or services by virtue of any information, material or content referred to or included on, or linked from or to this Technical Standard.

©

SA Power Networks Copyright 2012: This publication is copyright. SA Power Networks reserves to itself all rights in such material. You must not reproduce any content of this Technical Standard by any process without first obtaining SA Power Networks permission, except as permitted under the Copyright Act 1968. All rights reserved

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Contents 1.

PURPOSE ........................................................................................................ 6

2.

SCOPE............................................................................................................. 6

3.

REFERENCES ................................................................................................... 6

4.

DEFINITIONS ................................................................................................... 6

5.

LAND CATEGORY ............................................................................................ 6

6.

POLES ............................................................................................................. 7

7.

8.

9.

6.1

General ............................................................. ................................................................................................................................... ............................................................................. ....... 7

6.2

Design Information ................................................................. ....................................................................................................................... ...................................................... 7

6.3

Pole Selection .............................................................. ................................................................................................................................ .................................................................. 7

6.4

Loading Parameters on Poles ............................................................. ........................................................................................................ ........................................... 8

6.5

Longitudinal Wind ................................................................... ......................................................................................................................... ...................................................... 8

6.6

Standard Location of Poles ................................................................ ........................................................................................................... ........................................... 9

FOOTINGS ...................................................................................................... 9 7.1

General ............................................................. ................................................................................................................................... ............................................................................. ....... 9

7.2

Soil Types ...................................................................... ...................................................................................................................................... ................................................................ 9

7.3

Footing Types .............................................................. ................................................................................................................................ .................................................................. 9

7.4

Materials ....................................................................... ..................................................................................................................................... .............................................................. 10

7.5

Formers ............................................................ .................................................................................................................................. ........................................................................... ..... 10

7.6

Footing Orientation................................................................. ..................................................................................................................... .................................................... 10

CONDUCTORS ............................................................................................... 10 8.1

Definitions for Conductor Tensions .............................................................. ............................................................................................ .............................. 10

8.2

General ............................................................. ................................................................................................................................... ........................................................................... ..... 11

8.3

Tension ............................................................. ................................................................................................................................... ........................................................................... ..... 11

8.4

Side Swing ..................................................................... ................................................................................................................................... .............................................................. 11

8.5

Measurements of As-Built Condition ............................................................ .......................................................................................... .............................. 11

POLE TOP CONSTRUCTIONS .......................................................................... 11 9.1

Pole top Assemblies ............................................................... .................................................................................................................... ..................................................... 11

9.2

Line Hardware ............................................................. ............................................................................................................................. ................................................................ 11

9.3

Network Directive ND J4 ........................................................ ............................................................................................................. ..................................................... 12

9.4

Bushfire and Non-Bushfire Risk Areas .......................................................... ........................................................................................ .............................. 12

9.5

Corrosion Zones and High Pollution Zones .............................................................. ................................................................................. ................... 12

9.6

High Load Corridors ............................................................... .................................................................................................................... ..................................................... 12

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10. INSULATORS ................................................................................................. 12 10.1 Suspension .................................................................................................................................. 12 10.2 Tension ........................................................................................................................................ 13 10.3 Post (66kV only) .......................................................................................................................... 13 10.4 Pin (11kV) .................................................................................................................................... 13

11. ELECTRICAL REQUIREMENTS......................................................................... 13 11.1 Rated Voltage .............................................................................................................................. 13 11.2 Lightning Withstand Voltage....................................................................................................... 14 2

11.3 I t Rating ...................................................................................................................................... 14 11.4 Electrical Clearances ................................................................................................................... 14

12. OTHER CONSIDERATIONS ............................................................................. 14 12.1 Ferro-resonance .......................................................................................................................... 14

Appendix A: Conductor Design Constants ............................................................ 15 A-1: All Aluminium Conductors (AAC) - Metric ..................................................................................... 15 A-2: All Aluminium Conductors (AAC) - Imperial................................................................................... 16 A-3: All Aluminium Conductors (ACSR/GZ & ACSR/ AZ) - Metric ........................................................... 17 A-4: All Aluminium Conductors (ACSR/GZ & ACSR/AZ) - Imperial ........................................................ 18 A-5: All Galvanised Steel Conductors (SC/GZ) - Metric ......................................................................... 19 A-6: All Galvanised Steel Conductors (SC/GZ) - Imperial ...................................................................... 20 A-7: Hard Drawn Copper Conductors - Imperial ................................................................................... 21 A-8: All Aluminium Clad Steel Conductors (SC/AC) - Metric & Imperial ............................................... 22 A-9: All Aluminium Alloy Conductors - 1120 ( AAAC/1120) Metric & 6201A (AAAC/6201) - Metric ..... 23

Appendix B: Pole Design Data .............................................................................. 24 B-1: Distribution Poles Data .................................................................................................................. 24 B-2: Transformer Poles Data ................................................................................................................. 25 B-3: Distribution Poles Construction Details ......................................................................................... 26 B-4: Transformer Details ....................................................................................................................... 27 B-5: Transformer Details - Continued ................................................................................................... 28 B-6: “WB” Sub-Transmission Poles (Design Strength & Supply Item Numbers) ................................... 29 B-7: “WB” Sub-Transmission Poles (Design Strength & Supply Item Numbers) - Continued ............... 30 B-8: “WB” Sub-Transmission Poles (Design Strength & Supply Item Numbers) - Continued ............... 31

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APPENDIX C: Network Directive-ND P1 - Standard Location of Poles .................... 32 1.

PURPOSE ...................................................................................................... 32

2.

SCOPE........................................................................................................... 32

3.

REFERENCES ................................................................................................. 32

4.

DEFINITIONS ................................................................................................. 32

5.

RESPONSIBILITIES ......................................................................................... 32

6.

DIRECTIVE .................................................................................................... 32

APPENDIX D: Network Directive-ND J4-Construction of New Power Lines ............ 34 1.

PURPOSE ...................................................................................................... 34

2.

SCOPE........................................................................................................... 34

3.

REFERENCES ................................................................................................. 34

4.

DEFINITIONS ................................................................................................. 34

5.

RESPONSIBILITIES ......................................................................................... 35

6.

DIRECTIVE .................................................................................................... 35

APPENDIX E: Conductor Measurement Sheet ....................................................... 37

Refer to a Separate Document for following TS-107- Appendix F & G................... 38 APPENDIX F: Atmospheric Corrosion Maps of South Australia ............................. 38 APPENDIX G: DPTI’s Maps of High Load Corridor.................................................. 38

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1.

PURPOSE The purpose of this Technical Standard is to define the design requirements of new lines in the SA Power Networks overhead distribution network. The designs must meet all appropriate regulations, guidelines and standards.

2.

SCOPE This standard is applicable to overhead lines up to and including 66kV. All mechanical loads and strengths used in this technical standard are based on working stress, not ultimate stress. The general design requirements are specified in the General Standard TS-103.

3.

REFERENCES Line design parameters for conductors and poles (structures) shall comply with the requirements of the following: 

4.

ESAA document “Guidelines for Design and Maintenance of Distribution and Transmissi on Lines” Code HB C(b) 1 – 1999



The Electricity (General) Regulations 2012



The Electricity (Vegetation Clearance) Regulations 1996



SA Distribution Code

DEFINITIONS NBFRA (Non Bushfire Risk Area) - as defined in the Regulations associated with the Electricity Act 1996 ie “the part of the state shown in the maps in schedule 3 as the non -bushfire risk area excluding the areas shown in those maps as bushfire risk areas”. Bare - Bare Conductor ABC - Aerial Bundled Cable CCT - Covered Conductor Thick (equivalent to SA Power Networks - Insulated Unscreened Conductor, IUC) LV (Low Voltage Mains) - electricity distribution mains of voltage less than 1000 Volts HV (High Voltage Mains) - electricity distribution & transmission mains of voltage greater than 1000 Volts.

5.

LAND CATEGORY In determining the wind loading on structures and cables, the appropriate land category shall be selected for the conditions when applying wind loads in calculations. The categories are:

LC1

Valleys, ridges, escarpments and suburban coastal regions or any line where Increased security is required.

LC2

Normal rural conditions adjacent to crops, scattered trees or undulating ground and rural coastal regions.

LC3

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Built up suburbs and townships, level wooded country.




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TS-107 - Overhead Line Design Standard for Transmission & Distribution Systems Calculation of wind load is based on a nominal working wind speed of 41m/s. For the permissible method the wind load on overhead conductors, cables and poles are outlined in table 1: All wind loads in Pa, working load

Table - 1

Conductor/pole heights less than 11m Conductor/pole heights more than 11m, but less than 20m For conductor heights less than 20m

Poles (steel edge) Poles (concrete face) Poles (steel edge) Poles (concrete face) Conductors (all) Broad Band Cable

LAND CATEGORY LC 1 LC 2 LC 3 1500 1200 800 2000 1500 800 1500 1200 800 2200 1800 1300 650 500 400 650 500 400

Where span length exceeds 150m, a span reduction factor (SRF) shall be applied. This must be determined in accordance with HB C(b)1.

6.

POLES

6.1

General Poles shall be selected such that the static (permanent) and dynamic (wind) load combination is within safe limits. The Stobie Pole consists of two rolled steel sections tapered from a closed spacing at the top to a maximum spacing just below the top of the footing and reducing to a minimum spacing at the bottom. The space between the sections is f illed with concrete and the steel sections a re tied together through concrete with bolts spaced at suitable intervals. The steel sections are considered to carry the full bending and compressive loads. The concrete and bolts provide restraint against buckling of the steel section under compressive load. The bolts also serve to transmit shear loads from the steel to the concrete.

6.2

Design Information Strength in the strong direction is limited to a maximum of 4.5 times the weak direction strength. Wind forces shall be selected accordingly to the worst terrain category likely during the design life of the pole. If the wind load exceeds the weak direction strength by more than 50% then these poles shall be temporarily guyed if the conductors are not strung. Steel sections used are current production structural shapes to AS3678 and the steel rolled to AS3679 - Grade 250 (Corresponding to 250Mpa ultimate yield stress). Designations are: Tapered Flange Beams (TFB) Universal Beams (UB) Universal Columns (UC) Top of footing level is nominally 150mm below ground level. In built up areas and in underground work, the footing level may be 300mm below ground level.

6.3

Pole Selection Poles are commonly described by the duty they perform. They can be termed li ne, angle, deadend, brace and transformer poles. Each individual pole must be examined in relation to its duty to determine that a pole of adequate strength in strong and weak directions is used without the use of guy wires.

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TS-107 - Overhead Line Design Standard for Transmission & Distribution Systems 6.4

Loading Parameters on Poles The design loadings reflected to the pole top in both strong and weak direction, should not exceed the strength of the pole in either direction. In addition to the above, the combined loading (K) of the pole should not exceed the factor given in the table below. The combination loading (K) is expressed as:

K Where,

   

=

+

fs = applied load in strong direction Fs = pole’s design strength in strong direction

fw = applied load in weak direction Fw = pole’s design strength in weak direction

K Factors shall be selected from the following table-2.

Table - 2 Condition Sustained load conditions, without wind Maintenance or erection condition (allow 20% of maximum wind loadings)

K Factor 1.0 1.0

Short Duration Load conditions 1. All poles 1 deg C with no wind At 15 deg C plus wind 2. Line or angle pole 3. Dead-end pole (Temporary or permanent)

1.1 1.0 1.5

Where conductors provide constraint for a “dead-end” pole, ie at tee -off positions, the wind on the pole concrete face and ½ tee-off conductor span may be reduced by up to 50% (depending on the level of constraint) when calculating fw. Strengths of commonly used poles are listed in Appendix B.

6.5

Longitudinal Wind The assessment of the pole strength for wind blowing along the line is a difficult assessment and generally beyond the scope of a basic design process. The significance of the along line wind will depend on the location of the pole, the size of the pole and along line stiffness of the poles and conductor. Many Stobie poles will not be self-supporting and will require the interaction with the conductor to be structurally adequate. Experience gained on transmission lines built throughout South Australia over a 50 year period has demonstrated good performance for wind alo ng the line using the standard methods of design provided the crossarms and extension pieces are c apable of resisting some basic longitudinal loads generated by wind on the pole. However, this does not guarantee that the same level of security has been achieved in the transverse and longitudinal direction for all poles. As a minimum, it is recommended that for poles over 12 m total length where the wind on the pole exceeds the capacity, a longitudinal load equivalent to 50% of the published SA Power Networks load (working) on the pole is a minimum design load to be resisted by any component connecting the pole to the conductors.

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TS-107 - Overhead Line Design Standard for Transmission & Distribution Systems This load should be shared between each of the conductors. This along line load is not required to be applied to the pole to determine adequacy in the direction along the line. For poles where the conductor does not deviate, the pole capacity need only be checked against strength in the transverse (strong) direction provided the ratio of strong to weak strength does not exceed 4.5 to 1. The designer should give individual consideration to every pole and make some assessment on the effect of wind in the direction along the line and how the pole is supported. Use of a previous successful standard pole/conductor/crossarm/span length arrangement is considered a reasonable assessment criterion for a basic line design. SA Power Networks may request that the design is given a more sophisticated assessment by an independent designer.

6.6

Standard Location of Poles Poles shall be located in positions which meet the requirements of Network Directive ND-P1 (re-printed in Appendix C)

7.

FOOTINGS

7.1

General Poles shall be selected such that they can withstand loads without the assistance of guy wires. The footing selection shall also be based on the correct assessment of the soil type.

7.2

Soil Types Soils are grouped into three classes, A, B, and C as follows;

Class A

Gravel, compacted sand and rock soils not subject to large variations in volume with moisture content, which offer appreciable resistance to boring and which remain stable after boring.

Note: If the excavation is in rock, the hole should be just large enough to take the pole at the recommended depth, and no reinforcement is necessary in the concrete.

7.3

Class B

Soils subject to large variations in volume with changing moisture content. Soils which offer little cohesion, ie clay.

Class C

Low bearing soil. Requires caisson to support sides during excavation. Examples are swamps, saturated soil and drift sands.

Footing Types The footing type shall be selected from the SA Power Networks Construction Manual (Drawing E1800 series). Alternative footing arrangements may be used if certified by an appropriately qualified civil engineer. The types are: 1. Full strength a. In Situ b. Two Block c. Cylindrical d. Deep Type 2. Unformed Footings The “Unformed” footing is acceptable where it can be certified by an appropriately qualified civil engineer that loads on the pole will not exceed the strength of the pole and cause movement.

An unformed footing may be used when : a. a pole is not to be loaded at more than 50% of its strong direction strength, or b. exceed half the design factor, ie 1.5 for terminal pole equates to 0.75. An unformed footing may NOT be used when for a terminal pole. TS-107




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Materials Concrete for footings shall have a minimum compressive strength of 12 MPa at 7 days and 20 MPa at 28 days. A reinforcing cage must be used for all transmission poles.

7.5

Formers Formers shall be used for cored footings. Formers are numbered on size order from 0 to U5, where 0 is the smallest. Refer to SA Power Networks WC series drawings for former dimensions.

7.6

Footing Orientation All pole footings shall be orientated correctly in relation to the centre line of the mains, and shall be positioned so that the pole will have the direction of the resultant forces acting along the strong direction of the pole.

8.

CONDUCTORS

8.1

Definitions for Conductor Tensions Sustained Load means the tension in the conductor and applied to the pole at a temperature which is the mean of the winter season. This load is considered to be applied with no wind.

Table - 3

Zone 1 (South East) Zone 2 (Central - Metro Areas) Zone 3 (Northern)

Winter Mean Temperature (Sustained Loads) 9 deg C 11 deg C 14 deg C

ST T9 T 11 T 14

Everyday Load means the tension in the conductor at a temperature which is the mean of the twelve month period. This Load is considered to be applied with no wind.

Table - 4

Zone 1 (South East) Zone 2 (Central - Metro Areas) Zone 3 (Northern)

Yearly Mean Temperature (Everyday Loads) 13 deg C 16 deg C 20 deg C

EDT T 13 T 16 T 20

Short Duration Load means the tension in the conductor and applied to the pole in the most severe of the following conditions: a. A conductor temperature equal to the average minimum winter temperature in still air conditions (+ 1 deg C), or b. A conductor temperature of +15 deg C with the maximum wind pressure on the projected area of the conductor.

Minimum Sag occurs in the conductor at a temperature of 1 deg C in still air. Maximum Sag occurs in the conductor at a temperature of: 50°C

-

11kV radial lines in rural areas only

80°C

-

11kV backbone feeder sections, 33kV in rural and metropolitan areas.

100°C -

TS-107

all 66kV lines, unless otherwise specified.




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General Vibration induced into the line shall be limited by careful selection of a tension at which the conductor operates for the majority of its design life to ensure that the fatigue endurance limit of the conductor wires is not reached.

8.3

Tension The design conductor tension under the everyday load condition is that the horizontal tension shall be no greater than the percentage of its calculated breaking load as derived from HB C(b)1. Under the short duration load, the tangential tension in the conductor should not exceed 50% of its calculated breaking load. It must be stressed that this is a maximum tension which should be used to avoid damage to the conductor over its expected service lif e. Lesser tensions may be used accordingly to pole capacities or other considerations. Design constants for bare conductors are contained in Appendix A

8.4

Side Swing All designs must include a check to ensure that the conductor will not swing, under the influence of wind, outside the requirements of the Electricity Act and Regulations. This design shall be checked at the conditions stated in clause 2 and 3, eg for rural application in terrain category 2, - T50 + 500pa wind.

8.5

Measurements of As-Built Condition SA Power Networks’ Compliance Inspector shall have at all reasonable times access to the work site, and shall have the power at all reasonable times, to inspect, examine, and test materials and workmanship of the works during its manufacture or installation.

Measurement Sheets are to be completed by the Contractor throughout the progress of the works. The Measurement Sheets shall be submitted with the Certificate of Practical Completion. Measurement Sheets shall be in accordance with Appendix E. Where tests are performed i.e. earth stake resistance readings, they shall be recorded in accordance with the Testing Standard (TS 105) and submitted with the Certificate of Practical Completion.

9.

POLE TOP CONSTRUCTIONS

9.1

Pole top Assemblies Pole top assemblies shall be selected and c onstructed in accordance with the relevant E-Drawings. Only arrangements including combination arrangements illustrated in the E-Drawings are acceptable.

9.2

Line Hardware Table - 5 Item

11kV, LV

33kV

None

None

Minimum failing load

Conductor protection

Vibration dampers Warning markers

TS-107

66kV 70kN per string as per AS1154 Armour grip suspension style clamps to be used at all post and suspension positions.

As per HB C(b)1 Aircraft warning markers to be installed on river crossings and adjacent spans and as otherwise directed by AS3891.




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Network Directive ND J4 All new power lines constructed must conform to the Network Directive, ND J4: ‘Construction of New Power Lines’. A copy of ND J4 can be found in Appendix D.

9.4

Bushfire and Non-Bushfire Risk Areas The Network Directive, ND J4, specifies the construction requirements for Non-Bushfire Risk Areas (NBFRA), Bushfire Risk Areas (BFRA) and High Bushfire Risk Areas (HBFRA). The following table reiterates and expands on these requirements for 11 kV applications.

Table - 6 APPLICATION OF 11 kV OVERHEAD CONSTRUCTION TYPES * Rural Backbones & Rural Spurs NBFRA’s of Adelaide Metro Area Feeder Ties Standard Construction Open wire Open wire Open wire Alternative Construction CCT (IUC) CCT (IUC) ABC or CCT (IUC) * Table to be read in conjunction with Network Directive ND J4. Refer to Section 4 of this standard for definitions.

9.5

Corrosion Zones and High Pollution Zones Standards for 11, 33 & 66 kV constructions in corrosion zone areas and high pollution areas may vary from those standards that generally apply. These variations of standards can be found throughout the E drawings, eg E1017, HV Insulators, in the Overhead Construction E drawing manual. Other construction drawings show alternatives for high corrosion/pollution. The locations of the States’ corrosion zones are shown in Appendix F, the ‘Atmospheric Corrosion Map of South Australia’. Note, the areas defined as ‘Very Severe Zones’ are regarded as the SA Power Networks Corrosion Zone Areas.

The pollution zones of the State are the same as the corrosion zones, plus, lines constructed near the coast* and any area subject to heavy atmospheric contamination. This m ap is intended to illustrate general areas that may be prone to corrosion or pollutants. Where additional areas are known to be corrosive or have high pollution due to local conditions, appropriate construction standards must be specified. All designs of overhead constructions for corrosion or high pollution zones must specify the appropriate standards. * The depth of the pollution zone from the coast varies (refer to the E drawings), but the minimum depth is 1 km.

9.6

High Load Corridors New overhead road crossings (including services) must be erected so as not to compromise existing clearances along high load corridors. Refer to the Transport SA maps in Appendix G for the location of ‘Principle Routes for Over dimensional Loads’ and contact the High Load Officer, George Hudson, for further details.

10.

INSULATORS In all cases, SA Power Networks Standard insulators are to be used.

10.1

Suspension Table - 7 Type

Cap and pin Standard profile

Minimum strength

refer line hardware

Corona Ring

No

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Tension Table - 8

10.3

Type

Cap and pin Standard profile

Minimum strength

refer line hardware

Corona Ring

No

Post (66kV only) Table - 9

10.4

Type

Line Post AS Clamp top,

Material

Aerodynamic profile

Minimum leakage distance

1780mm (2080mm for large conductors & heavy spans)

Minimum strength

12.5kN vertical mount, 19kN horizontal mount

Corona Ring

No

Pin (11kV) Table - 10 Type

Line Pin,

Material

Aerodynamic profile

Minimum leakage distance

mm (mm for large conductors & heavy spans)

Minimum strength

kN vertical mount, kN horizontal mount

11.

ELECTRICAL REQUIREMENTS

11.1

Rated Voltage The maximum continuous rated voltage shall be:

Table - 11 11kV lines

11kV + 10 % = 12kV

33kV lines

33kV + 10 % = 36kV

66kV lines

66kV + 10% = 72.6kV

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Lightning Withstand Voltage The lightning impulse withstands voltage under full wave dry conditions using the standard 1.2/50 microsecond impulse shall be:

Table - 12 11kV lines

95kV

33kV lines

170kV

66kV lines

325kV

The wave shape for switching impulses is 250/2500 microseconds.

11.3

2

I t Rating Table - 13 Max 20kA for 1 second (400M A2.sec),

11kV lines

11.4

Average 8kA for 1 second (64M A2.sec)

33kV lines

Maximum fault current at the maximum backup protection clearing times, will be advised, when required

66kV lines

Maximum fault current at the maximum backup protection clearing times will be advised, when required.

Electrical Clearances The following minimum clearances shall be maintained to supporting structures, under all conditions:

Table - 14 Clearance Phase to Earth Phase to Phase

11kV 255mm 255mm

33kV 350mm 400mm

66kV 690mm 800mm

The minimum clearances defined in the Electricity (General) Regulations 1997 and associated schedules shall be maintained, under all conditions.

12.

OTHER CONSIDERATIONS

12.1

Ferro-resonance On 33kV be aware of the potential for Ferro-resonance and consider the availability of appropriate three phase switching devices to isolate transformers that are supplied by short lengths of 33kV cable.

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Appendix A: Conductor Design Constants A-1: All Aluminium Conductors (AAC) - Metric ALL ALUMINIUM CONDUCTOR (AAC) (Metric) 1

2

Equiv. Alum Area

Stranding and Wire Diameter

UTS

Resistance at 20°C

Total Diameter

Cross Sectional Area (A)

Mass

mm2

mm

kN

Ohms/km

mm

mm2

kg/m

41.10

7/2.75

3

6.72

4

0.6890

5

8.3

6

41.6

7

0.113

8

9

11

12

Conductor Load N/m

Modulus of Elasticity (E)

Coefficient of Expansion (a)

W100

kPa

W 1.099

1.377

10

W500

per °C x 10 6

13

-6

14

Constants

C1

C2

4.293

59 x 10

23.0

319.7

56.4

6

76.30

7/3.75

11.80

0.3700

11.3

77.3

0.211

2.080

2.367

6.021

59 x 10

23.0

436.0

104.9

122.00

7/4.75

18.90

0.2320

14.3

124.0

0.339

3.335

3.629

7.890

59 x 10

6

23.0

552.1

168.3

10.041

56 x 10

6

23.0

650.9

233.9

6

23.0

846.2

395.3

23.0

1067.0

628.5

180.00

19/3.50

28.70

0.1570

17.5

182.8

0.503

4.925

5.226

301.00

37/3.25

48.20

0.0940

22.8

307.0

0.845

8.289

8.594

14.055

56 x 10

495.00

61/3.25

75.20

0.0572

29.3

506.1

1.400

18.247

18.480

23.400

54 x 106

Notes: 1. Conductor Loads in Column 9 and 10 are the result of conductor load + wind load on projected area. W100 for 100 pascal wind and W500 for 500 pascal wind 2. Values taken from AS1531 1991, Table 3.2 3. C1 =

   and C2 =     ; are conductor constants used in temperature change calculations.

Where, E = Final modulus of Elasticity, A = Cross sectional area a nd a = Coefficient of Linear Expansion

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Date of Publication: 07 December 2012 Page 15 of 38

TS-107 - Overhead Line Design Standard for Transmission & Distribution Systems A-2: All Aluminium Conductors (AAC) - Imperial ALL ALUMINIUM CONDUCTOR (AAC) (Imperial) 1

2

3

4

5

6

7

8

Equiv Copper Area

Equiv Alum Area


UTS

Resistance at 20°C

Total Diameter


Mass

2

2

9

10

11

12

Conductor Load N/m

13

Constants

in

mm

inches

kN

Ohms/km

mm

mm

2

kg/m

W

W100

W500

C1

C2

.014

14.34

7/.064

2.62

1.9685

4.8

14.5

.0399

0.391

0.625

2.470

191.9

20.3

.024

26.50

7/.087

4.76

1.0641

6.6

26.8

.0733

0.719

0.977

3.392

261.5

37.6

.037

38.75

7/.1052

6.63

0.7273

8.0

39.1

.1073

1.052

1.323

4.149

314.3

54.8

.07

72.60

7/.144

11.79

0.3882

11.0

73.5

.2008

1.970

2.254

5.829

430.3

102.9

.117

121.13

7/.186

18.86

0.2329

14.2

122.7

.3362

3.298

3.589

7.817

566.8

171.2

.183

191.21

37/.102

31.58

0.1487

18.1

195.0

.5385

5.253

5.557

10.495

691.8

263.4

.28

292.24

37/.1261

45.59

0.0970

22.4

297.7

.8271

8.114

8.418

13.842

852.1

402.7

.497

518.71

37/.168

77.18

0.0546

29.9

529.2

1.4624

14.346

14.653

20.709

1136.8

7 14.2

.57

595.25

61/.1403

91.63

0.0477

32.0

605.8

1.6855

16.535

16.843

23.037

1206.4

807.1

Notes: 1. Conductor Loads in Column 10 and 11 are the result of conductor load + wind load on projected area. W100 for 100 pascal wind and W500 for 500 pascal wind 2. Design figures in column 4 to 13 are direct conversions for values shown o n SA Power Networks drawing P -30750 3. C1 =

   and C2 =     ; are conductor constants used in temperature change calculations.

Where, E = Final modulus of Elasticity, A = Cross sectional area and a = Coefficient of Linear Expansion

TS-107




TS-107 - Overhead Line Design Standard for Transmission & Distribution Systems A-3: All Aluminium Conductors (ACSR/GZ & ACSR/AZ) - Metric ALL ALUMINIUM CONDUCTOR - GALVANISED STEEL REINFORCED (ACSR/GZ) ALL ALUMINIUM CONDUCTOR - ALUMINISED STEEL REINFORCED (ACSR/AZ) 1

2

Equiv Alum Area 2

mm

35.2

3

Stranding and Wire Diameter mm Alum 6/2.75

Steel 1 /2.75

(Metric) 8

4

5

6

7

UTS

Resistance at 20°C

Total Diameter


kN

Ohms/km

mm

mm

12.5

.8050

8.25

2

41.6

9

Mass

kg/m 0.144

10

11

12

13 Coefficient of Expansion (a)

W500

Modulus of Elasticity (E) kPa

Conductor Load N/m

W 1.413

W 100 1.636

4.360

C2

19.3

370.0

63.4

19.3

504.4

117.9

19.9

617.5

182.1

6

18.4

778.0

267.3

6

18.4

1011.4

451.8

6

19.9

1105.3

583.5

6

19.9

1289.5

794.2

6 6

79 x 10

65.2

6/3.75

1/3.75

21.5

.4330

11.3

77.3

0.268

2.629

2.861

6.232

79 x 10

6/4.75

7/1.6

31.9

.2710

14.3

120.4

0.404

3.963

4.213

8.175

76 x 10

30/2.5

7/2.5

61.6

.1960

17.5

181.6

0.675

6.622

6.849

10.973

80 x 10

244.0

30/3.25

7/3.25

104.0

.1160

22.75

306.9

1.141

11.193

11.421

15.959

80 x 10

373.0

54/3.0

7/3.0

115.0

.0758

27.0

431.2

1.440

14.126

14.381

19.540

68 x 10

508.0

54/3.5

7/3.5

153.0

.0557

31.5

586.9

1.960

19.228

19.484

24.855

-6

15

Constants

C1

6

105.0 144.0

14

68 x 10

per °C x 10

Notes: 1. Conductor Loads in Column 10 and 11 are the result of conductor load + wind load on projected area. W100 for 100 pascal wind and W500 for 500 pascal wind 2. Values taken from AS1220, Part 1 a nd 2. 1973 except for conductor ma rked * 3. C1 =

   and C2 = ; are conductor constants used in temperature change calculations.


TS-107




TS-107 - Overhead Line Design Standard for Transmission & Distribution Systems A-4: All Aluminium Conductors (ACSR/GZ & ACSR/AZ) - Imperial ALL ALUMINIUM CONDUCTOR - GALVANISED STEEL REINFORCED (ACSR/GZ) ALL ALUMINIUM CONDUCTOR - ALUMINISED STEEL REINFORCED (ACSR/AZ) (Imperial) 1

2

Equiv Copper Area

Equiv Alum Area

in

2

mm

3

2

4

Stranding and Wire Diameter mm

5

6

7

8

9

UTS

Resistanc e at 20°C

Total Diameter

Cross Sectional Area 2

Alum

Steel

kN

Ohms/km

mm

mm

10

11

12

Conductor Load N/m

Mass

13

14

Constants

kg/m

W

W 100

W500

C1

C2

.03

33.14

6/.1052

1/.1052

11.83

0.5808

8.0

39.4

0.1355

1.330

1.553

4.228

360.7

59.1

.06

62.10

6/.144

1/.144

21.62

0.4538

11.0

7305

0.2544

2.496

2.726

6.027

493.5

111.3

.10

103.60

6/.186

7/.062

32.47

0.2723

14.2

118.7

0.3957

3.882

4.132

8.080

596.9

167.3

.125

128.58

30/.093

7/.093

56.58

0.2198

16.5

161.9

0.6040

5.925

6.151

10.172

723.4

221.8

.15

154.67

30/.102

7/.102

67.48

0.1826

18.1

194.8

0.7275

7.136

7.362

11.539

793.0

266.6

.225

236.40

30/1261

7/.1261

101.51

0.1203

22.4

298.1

1.1113

10.902

11.130

15.640

980.7

408.3

.35

372.35

54/.118

7/.118

116.54

0.0760

27.0

430.3

1.4430

14.156

14.410

19.553

1098.8

560.5

.5

516.92

54/.139

7/.139

159.78

0.0548

31.8

596.8

2.0009

19.629

19.884

25.253

1292.9

777.5




TS-107




TS-107 - Overhead Line Design Standard for Transmission & Distribution Systems A-5: All Galvanised Steel Conductors (SC/GZ) - Metric GALVANISED STEEL CONDUCTOR (SC/GZ) (Metric) 1

2

Equiv Alum Area 2

mm

3

4

5

6

7


UTS

Resistance at 20°C

Total Diameter


mm

kN

Ohms/km

mm

mm

2

8

10

Conductor Load N/m

Mass

kg/m

9

W

W100

W500

11

12



kPa

per °C x 10 6

13

-6

14

Constants

C1

C2

2.95

3/2.75

22.2

9.7

5.93

17.8

0.139

1.364

1.487

3.264

193 x 10

11.5

378.6

39.6

2.32

7/1.60

17.5

12.4

4.80

14.1

0.113

1.109

1.208

2.644

193 x 106

11.5

336.4

31.2

5.019

6

11.5

554.2

84.8

6

11.5

692.8

132.5

6.26 9.79

19/1.60 19/2.00

47.6 74.4

4.5 2.9

8.00 10.00

38.2 59.7

0.309 0.483

3.031 4.738

3.135 4.842

6.888

193 x 10 193 x 10

Notes: 1. Conductor Loads in Column 9 and 10 are the result of conductor load + wind load on projected area. W100 for 100 pascal wind and W500 for 500 pascal wind 2. Values taken from AS1220, Part 1 1973 except for conductor marked * 3. C1 =



TS-107




TS-107 - Overhead Line Design Standard for Transmission & Distribution Systems A-6: All Galvanised Steel Conductors (SC/GZ) - Imperial GALVANISED STEEL CONDUCTOR (SC/GZ) (Imperial) 1 Equiv Copper Area 2

2

3

4

Equiv Alum Area


UTS

Resistance at 20°C

inches

kN

Ohms/km

2

5

6

7

8

Total Diameter


Mass

mm

mm

kg/m

W

W100

2

9

10

11

Conductor Load N/m

in

mm

0.0026

2.72

3/.104

20.51

10.31

5.7

16.5

0.1294

1.270

0.0090

9.57

7/.128

72.51

3.28

10.0

58.1

0.4880

4.787

0.0096

10.10

19/.080

76.95

3.06

10.2

61.6

0.4954

4.860

12

13

Constants W500

C1

C2

1.392

3.115

362.8

36.4

4.885

6.834

685.5

128.1

4.965

7.030

689.7

131.3




TS-107




TS-107 - Overhead Line Design Standard for Transmission & Distribution Systems A-7: Hard Drawn Copper Conductors - Imperial HARD DRAWN COPPER CONDUCTOR (Imperial) 1

2

3

4

5

6

7

8

Equiv Copper Area

Equiv Alum Area


UTS

Resistance at 20°C

Total Diameter


Mass

inches

kN

Ohms/km

mm

mm

.0125

7/.048

3.44

2.1905

3.7

8.1

0.0759

0.744

0.829

1.974

199.9

16.3

.0225

7/.064

6.09

1.2314

4.9

14.4

0.1302

1.277

1.366

2.753

265.7

28.7

.035

7/.080

9.43

0.7874

6.1

22.5

0.2054

2.014

2.104

3.653

333.2

45.0

.06

7/.104

15.75

0.4659

7.9

38.1

0.3438

3.371

3.462

5.202

434.5

76.1

.10

7/.136

26.11

0.2723

10.4

64.7

0.5878

5.765

5.857

7.751

567.3

130.5

.15

19/.101

39.59

0.1783

12.8

97.0

0.8899

8.727

8.820

10.830

700.2

198.6

.20

19/.116

51.60

0.1389

14.7

127.9

1.1667

11.442

11.536

13.608

797.2

257.0

.25

37/.093

64.05

0.1105

16.5

160.3

1.4673

14.390

14.484

16.596

890.0

321.1

.25

19/.131

64.94

0.1086

16.6

161.3

1.4867

14.579

14.673

16.786

898.5

327.5

.30

19/.144

77.40

0.0899

18.3

193.5

1.7977

17.629

17.723

19.860

987.1

395.5

.30

37/.103

80.51

0.0902

18.5

196.7

1.8349

17.994

18.088

20.231

984.9

393.9

.50

19/.185

123.22

0.0544

23.5

322.6

2.9614

29.042

29.136

31.328

1267.6

654.2

.60

37/.144

150.35

0.0453

25.6

387.1

3.5031

34.354

34.449

36.662

1377.2

774.3

in

2

mm

2

2

9

10

11

Conductor Load N/m

kg/m

W

W100

12

13

Constants W500

C1

C2




TS-107




TS-107 - Overhead Line Design Standard for Transmission & Distribution Systems A-8: All Aluminium Clad Steel C onductors (SC/AC) - Metric & Imperial ALUMINIUM CLAD STEEL CONDUCTOR (SC/AC) (Metric) 1

2

Equiv Alum Area 2

mm

5.91

3

4

5

6


UTS

Resistance at 20°C

Total Diameter


mm

kN

Ohms/km

mm

mm

3/2.75

22.7

4.8

7

kg/m

17.82

9

10

Conductor Load N/m

Mass

2

5.93

8

W

0.118

W 100

1.157

11

12



kPa

per °C x 10

W500

1.3

3.183

6

162 x 10

12.9

13

-6

14

Constants

C1

C2

346.8

37.2

Values taken from AS1222, Part 2 - 1973

ALUMINIUM CLAD STEEL CONDUCTOR (SC/AC) (Imperial) 1

2

3

Equiv Copper Area

Equiv Alum Area


UTS

Resistance at 20°C

inches

kN

3/.1019 7/.1019

2

2

in

mm

.005

5.24

.012

12.16

4

5

6

7

8

Total Diameter


Mass

Ohms/km

mm

mm

kg/m

W

W100

W500

C1

C2

20.16

5.42

5.59

15.69

0.104

1.022

1.161

2.975

325.4

32.8

44.57

2.33

7.77

36.44

0.246

2.407

2.529

4.570

496.0

76.2

2

9

10

11

Conductor Load N/m

12

13

Constants

Design figures in column 4 to 1 3 are direct conversions for values shown o n SA Power Networks drawing P -30736




TS-107




TS-107 - Overhead Line Design Standard for Transmission & Distribution Systems A-9: All Aluminium Alloy Conductors - 1120 (AAAC/1120) Metric & 6201A (AAAC/6201) - Metric ALL ALUMINIUM ALLOY 1120 (AAAC / 1120) - (Metric) 1

2

Equiv Alum Area mm

2

39.7

3

4

5

6

7


UTS (CBL)

Resistance at 20°C

Conductor Diameter


mm

kN

Ohms/km

mm

mm

7/2.75

9.91

0.713

2

8.25

41.58

8

0.113

10

Conductor Load N/m

Mass

kg/m

9

W

W 100

1.099

1.377

W500 4.290

11

12

Final Modulus of Elasticity (E)

Coefficient of Linear Expansion (a)

kPa

per °C 6

13

14

Constants

C1

C2

23 x 10

-6

319.7

56.4

6

23 x 10

-6

436.0

104.9

6

23 x 10

-6

552.1

168.3

13

14

59 x 10

73.7

7/3.75

17.6

0.383

11.3

77.28

0.211

2.080

2.367

6.021

59 x 10

118

7/4.75

27.1

0.239

14.3

124.0

0.339

3.335

3.629

7.890

59 x 10

ALL ALUMINIUM ALLOY 6201A (AAAC / 6201) - (Metric) 1

2

3

4

5

6

7

Equiv Alum Area


UTS (CBL)

Resistance at 20°C

Conductor Diameter


Mass

mm

kN

Ohms/km

mm

mm

mm

2

35.4

7/2.75

11.6

0.799

8.25

2

41.58

kg/m 0.113

8

9

10

Conductor Load N/m

W 1.099

W 100 1.377

W500 4.290

11

12

Final Modulus of Elasticity (E)

Coefficient of Linear Expansion (a)

kPa

per °C 6

Constants

C1

C2

23 x 10

-6

319.7

56.4

6

23 x 10

-6

436.0

104.9

6

23 x 10-6

552.1

168.3

59 x 10

65.8

7/3.75

21.7

0.430

11.3

77.28

0.211

2.080

2.367

6.021

59 x 10

106

7/4.75

34.8

0.268

14.3

124.0

0.339

3.335

3.629

7.890

59 x 10

Notes: 1. Values taken from AS1531 - 1991, Table 3.2 2. Conductor Loads in Column 9 and 10 are the result of conductor load + wind load on projected area. W100 for 100 pascal wind and W500 for 500 pascal wind 3. C1 =

   and C2 = ; are conductor constants used in temperature change calculations. Where, E = Final modulus of Elasticity, A = Cross sectional

area and a = Coefficient of Linear Expansion TS-107





Appendix B: Pole Design Data B-1: Distribution Poles Data Pole Designation Stock Number

Pole Size

Lifting Details Steel Section Designation mm-mm-kg/m

Bend Position from Bottom mm

Nominal Ground Line From Bottom mm

Depth of Pole in Footing mm

535 797 1053

1600 1900 1900

Strong Direction

Weak Direction

TC1 1500 Pa

TC2 1200 Pa

TC3 800 Pa

TC1 2000 Pa

TC2 1500 Pa

TC3 800 Pa

9-100-288 9-125-308 9-155-318

4700 10500 14800

1300 3200 5400

560 670 830

450 540 660

300 360 440

1560 1760 1900

1170 1320 1430

630 710 760

100x45x7.2 TFB 125x65x13 TFB 150 UB 18.0

1450 1450 1450

Centre of Gravity From Bottom mm 4169 4222 4240

11-100-325

3900

870

690

550

370

1950

1460

780

100x45x7.2 TFB

1550

5003

681

11-125-345T

8600

2070

860

690

460

2310

1740

930

125x65x13 TFB

1550

5132

11-155-355T

12150

3490

1060

850

570

2500

1870

1000

150 UB 18.0

1550

12-100-299 12-125-319T

3500 7700 14900 11000 17300 26000 7300 10600 15000 27000 31000

900 2300 4030 3800 5800 7550 2100 3500 5200 6850 12800

760 950 1180 1180 1330 1200 1050 1290 1460 1320 1680

610 760 940 940 1060 960 840 1040 1170 1060 1350

410 510 630 630 710 640 560 690 780 710 900

2170 2570 2770 2770 3210 4240 2920 3140 3480 4760 5500

1630 1930 2080 2080 2410 3180 2190 2360 2610 3570 4130

870 1030 1110 1110 1290 1700 1170 1260 1390 1910 2200

100x45x7.2 TFB 125x65x13 TFB 150 UB 18.0 150 UB 18.0 180 UB 22.2 150 UC 37 125x65x13 TFB 150 UB 18.0 180 UB 22.2 150 UC 37 200 UC 52

1550 1550 1550 1550 1550 1550 1550 1550 1550 1550 1750

Distribution Poles WB 0905 WB 0910 WB 0915 WA 1105 WA 1110 WA 1115 WB 1205 WB 1210 WB 1214 WB 1215 WB 1220 WB 1227 WB 1310 WB 1315 WB 1320 WB 1327 WB 1330

Wind Force on Poles (Newtons)

Strength In Newtons

R12-155-355

12-155-329T 12-179-417T 12-162-434 13-125-338 13-155-348T 13-179-396T 13-162-459T 13-206-405

Steel Face

Concrete Face

Total Mass of Pole kg

Steel Former Number

Std.

Extra

1450 1750 1750

0 1 1

1 2 2

1900

1750

0

1

1011

1900

1750

1

2

5158

1332

1900

1750

1

2

5474 5556 5419 5548 5504 5703 5966 5997 5925 6136 6318

731 1084 1548 1432 1949 2305 1213 1599 2056 2560 3364

1900 1900 1900 1900 2150 2150 1900 1900 2150 2150 2150

1750 1750 1750 1750 2000 2000 1750 1750 2000 2000 2000

0 1 1 1 3 3A 1 1 3 3A U1

1 2 2 2 3A U2 2 2 3A U2 U3

Distribution Pole Designation 9 - 100 - 288 where 9 is the overall length to the nearest metre 100 is steel section depth in millimetres and 288 is the steel section centreline separation at the bend in metres TS-107




TS-107 - Overhead Line Design Standard for Transmission & Distribution Systems B-2: Transformer Poles Data Wind Pressures: Exposed Situations

M Z

X Y

Rectangular T/F 1200 Pa Cylindrical T/F 750 Pa Sheltered Situations Rectangular T/F 720 Pa Cylindrical T/F 450 Pa Wind Loadings on T/F as an Equivalent Force at the Top of Pole (Newtons) (1) Strong Direction FT/F = X Y/h [h - (p - X/2)] x Wind Pressure (1)

Weak Direction F T/F = X Z/h [h - (p - X/2)] x Wind Pressure

Wind Loading on Pole as an Equivalent Force at Top of Pole (1) Steel Face: PSF (2) Concrete Face: PCF (refer to Table)

W

Transformer Loading as a Force at Top of Pole for Conductor Loadings etc PT/F = W M x 9.81 / h Conductor Tension Loading as an Equivalent Force at top of Pole Strong Direction FSC Weak Direction FWC Allowable Combined Loading on Pole The combined loading on the po le in both directions calculated from the appropriate combination of the above loads must be within the limit set by the following equation, where k = 1.0 for normal operating loading without wind, and 1.5 for full loading under maximum wind. Fs’ + Fw’ = k Fs Fw h M p W X

Height above Footing (mm) T/F Cof G to Pole C/line (mm) T/F load application point from pole top (mm) T/F mass (kg) T/F height (mm)

Y

T/F breadth (mm)

Z Fs Fw Fs’

T/F Depth (mm) Strong dir. Allowable Force (N) Weak Dir. Allowable Force (N) Strong Dir. S Applied Forces (N)

Fw’

Weak Dir. S Applied Forces (N)

See table pages 26 & 27 for transformer details. TS-107




TS-107 - Overhead Line Design Standard for Transmission & Distribution Systems B-3: Distribution Poles Construction Details

TS-107




TS-107 - Overhead Line Design Standard for Transmission & Distribution Systems B-4: Transformer Details The figures below (which have bee n provided by Tyree) apply to Tyree Transformers supplied after 1995. Capacity Mass Voltage Description Supply Item Number Current Contract kVA kg 10 150 16 LA5116 155  Single Phase 11 kV 20 185 (11/7.6kV) 50 LA5119 335  50 LA5182 335  25 LA5316 265  30 345 50 410 63 LA5327 485  Three Phase 11 kV (11/7.6kV) 100 LA5336 740  (Wilson T/F) 150 1100 200 LA5346 1220  200 1011348 1175  315 LA5356 1450  10 265 20 300 33 kV Single Phase 25 LA6116 260  50 LA6117 400  25 LA6499 600  30 710 50 830 33 kV Three Phase 63 LA6503 830  100 LA6504 1255  150 1555 200 LA6508 1725  10 LA0110 135  Single Phase 19 kV SWER SWER Dist 25 1012328 200  11 / 19 kV Single Phase SWER Isol 150 LA5196 1090  TS-107



Shape Cylindrical Cylindrical Cylindrical Cylindrical Cylindrical Rectangular Cylindrical Cylindrical Rectangular Rectangular Rectangular Rectangular Rectangular Rectangular Cylindrical Cylindrical Cylindrical Cylindrical Rectangular Cylindrical Cylindrical Rectangular Rectangular Rectangular Rectangular Cylindrical Cylindrical Rectangular

Height * mm 900 840 900 1090 1040 1075 1250 1420 1175 1240 1400 1410 TBA 1290 950 950 1050 1070 1030 960 1060 1030 1225 1425 1425 840 840 1500

Width * mm 520 570 520 725 725 960 720 620 960 1180 1230 1210 TBA 1290 800 845 630 700 1210 1110 1110 1210 1145 1105 1185 570 570 970

Depth * mm 510 580 510 710 710 580 610 640 630 950 750 905 TBA 945 1130 1020 960 1030 1200 1190 1150 1200 1250 1340 1320 950 1000 1230


TS-107 - Overhead Line Design Standard for Transmission & Distribution Systems B-5: Transformer Details - Continued Voltage

Description

Capacity kVA

Supply Item Number

Current Contract

Mass kg

Shape

Single Phase 200 LA5197 1265 Rectangular  SWER Isol 33 / 19 kV Single Phase 150 LA6196 1120 Rectangular  SWER Isol 200 LA6197 1270 Rectangular  * The dimensions quoted for the sizes of the transformers are overall dimensions, which include bushings, lifting lugs etc. 11 / 19 kV

TS-107



Height * mm

Width * mm

Depth * mm

1430

1070

1300

1400 1430

1040 1070

1250 1250


TS-107 - Overhead Line Design Standard for Transmission & Distribution Systems B-6: “WB” Sub-Transmission Poles (Design Strength & Supply Item Numbers) Pole Drg No.

Supply Item No.

Fs (kN)

Fw (kN)

Pole Designation

Steel Section

Overall Length

Former

Final Design Complete

WB1510

1011246

6.60

1.47

15-125x13-415

125x65x13TFB

15.0m

1

Yes

WB1515

1011247

10.30

2.98

15-155x18-425

150UB18

15.0m

2

Yes

WB1520

1011248

12.90

4.30

15-179x22-440

180UB22

15.0m

3

Yes

WB1526

1011249

18.50

7.10

15-207x30-460

200UB30

15.0m

U1

Yes

WB1532

1011250

21.50

7.00

15-162x37-430

150UC37

15.0m

3A

Yes

WB1536

1011251

29.50

13.40

15-206x52-397

200UC52

15.0m

U1

Yes

WB1540

1011252

41.50

11.80

15-203x46-645

200UC46

15.0m

U4

Yes

WB1550

1011253

53.50

15.30

15-205x60-640

200UC60

15.0m

U4

No

WB1555

1011254

59.00

23.50

15-254x73-580

250UC73

15.0m

U4

No

WB1565

1011255

71.50

28.90

15-260x89-575

250UC89

15.0m

U4

No

WB1615

1011256

16.70*

4.80*

16.5-155x18-415 Compound Section

150UB18/14

16.5m

2

Yes

WB1640

1011465

30.90

10.60

16.5-203x46-535

200UC46

16.5m

U3

Yes

WB1645

1011466

38.00

12.00

16.5-206x52-585

200UC52

16.5m

5

Yes

WB1660

1011467

64.00

25.80

16.5-260x89-575

250UC89

16.5m

U4

Yes

WB1815

1011257

9.10

2.50

18-155x18-450 Compound Section

150UB18/14

18.0m

2

Yes

WB1820

1011258

11.60

3.63

18-179x22-465

180UB22

18.0m

3

Yes

WB1826

1011259

17.10

5.92

18-207x30-510

200UB30

18.0m

U1

Yes

WB1830

1011260

23.00

9.20

18-256x37-550Compound Section

250UB37/25

18.0m

U2

Yes

WB1840

1011261

31.00

10.50

18-203x46-500

200UC46

18.0m

U3

Yes

WB1845

1011262

34.50

10.80

18-206x52-585

200UC52

18.0m

5

No

WB1850

1011263

45.00

13.90


200UC60/46

18.0m

U4

Yes

WB1855

1011264

47.50

19.00

18-254x73-580

250UC73

18.0m

U4

No

* = Ultimate Strength Values TS-107




TS-107 - Overhead Line Design Standard for Transmission & Distribution Systems B-7: “WB” Sub-Transmission Poles (Design Strength & Supply Item Numbers) - Continued Pole Drg No. WB1860 WB1862

Supply Item No. 1011265 1011266

58.00 70.00

Fw (kN) 23.30 23.30

WB2020 WB2025 WB2040 WB2045 WB2055 WB2060 WB2062

1011267 1011268 1011269 1011270 1011271 1011272 1011273

10.50 19.00 25.50 36.00 43.50 60.00 64.00

3.30 6.50 8.70 11.00 17.40 22.20 21.30

WB2070

1011274

84.00

34.10

WB2075

1011275

112.00

41.50

WB2120 WB2125 WB2130 WB2140

1011276 1011277 1011278 1011279

12.00 17.00 18.50 26.00

3.30 5.75 7.70 8.80

19.5-179x22-465 19.5-207x30-500 Compound Section 19.5-203x46-535 19.5-206x52-575 Compound Section 19.5-254x73-580 19.5-260x89-575 Compound Section 19.5-260x89-700 Compound Section 19.5-314x118-700 Compound Section 19.5-320x137-700 Compound Section 21-179x22-465 Compound Section 21-207x30-500 21-256x37-525 Compound Section 21-203x46-500

WB2150 WB2155 WB2160 WB2162 WB2170 WB2172

1011280 1011281 1011282 1011283 1011292 1011293

31.75 40.00 48.50 59.00 77.50 168.4*

9.75 16.00 19.60 19.60 31.30 63.3*

21-210x 60-508 21-254x73-580 21-260x89-575 Compound Section 21-260x89-700 Compound Section 21-315x118-700 Compound Section 21-321x137-700 Compound Section

TS-107

Fs (kN)

Pole Designation

Steel Section

Overall Length

Former

18-260x89-580 Compound Section 18-260x89-700 Compound Section

250UC89/73 250UC89/73

18.0m 18.0m

U4 U5

Final Design Complete Yes Yes

180UB22 200UB30/22 200UC46 200UC52/46 250UC73 250UC89/73 250UC89/73

19.5m 19.5m 19.5m 19.5m 19.5m 19.5m 19.5m

3 U1 U3 5 U4 U4 U5

Yes Yes No Yes No Yes Yes

310UC118/97

19.5m

U5

No

310UC137/97

19.5m

U5

Yes

180UB22/18 200UB30 250UB37/31 200UC46

21.0m 21.0m 21.0m 21.0m

3 U1 U2 U3

Yes Yes No Yes

200UC60 250UC73 250UC89/73 250UC89/73 310UC118/97 310UC137/97

21.3m 21.0m 21.0m 21.0m 21.0m 21.0m

U3 U4 U4 U5 U5 U5

Yes No Yes No Yes Yes




TS-107 - Overhead Line Design Standard for Transmission & Distribution Systems B-8: “WB” Sub-Transmission Poles (Design Strength & Supply Item Numbers) - Continued Pole Drg No.

Supply Item No.

Fs (kN)

Fw (kN)

Pole Designation

Steel Section

Overall Length

Former

Final Design Complete

WB2325

1011294

12.40

4.60


200UBx10.5m 200UB30x12m

22.5m

U1

Yes

WB2326

1011295

13.00

4.50

22.5-162x37-400

150UC37

22.5m

2

Yes

WB2330

1011297

21.00

7.20


250UB37/31

22.5m

U2

Yes

WB2340

1011299

21.50

7.40

22.5-203x46-535

200UC46

22.5m

U3

Yes

WB2350

1011300

27.00

9.60


200UC60/46

22.5m

U3

Yes

WB2355

1011301

37.50

14.80

22.5-254x73-590

250UC73

22.5m

U4

Yes

WB2360

1011302

45.00

18.10


250UC89/73

22.5m

U4

Yes

WB2370

1011303

72.00

29.00


310UC97x12m 310UC118x10.5m

22.5m

U5

Yes

WB2371

1010386

19.00

10.80

22.5-307x46-470

310UB46

22.5m

4

Yes

WB2375

1011304

84.10

33.50

U5

Yes

1011305

96.60

39.00

310UC97x10.5m 310UC137x12m 310UC118x12m 310UC158x10.5m

22.5m

WB2376

22.5-320x137-700 Compound Section 22.5-327x158-700 Compound Section

22.5m

U5

Yes

WB2430

1011306

15.90

6.60


250UB37/31

24.0m

U2

Yes

WB2440

1011307

20.00

6.90

24-203x46-535

200UC46

24.0m

U3

Yes

WB2625

1011308

10.80

4.00


200UB30/22

25.5m

U1

No

WB2630

1011309

14.90

6.00


250UB37/31

25.5m

U2

Yes

WB2641

1011537

13.00

6.00

26 - 203 x 46 - 400

200UC46

25.5

U1

Yes

* = Ultimate Strength Values

TS-107





APPENDIX C: Network Directive-ND P1 - Standard Location of Poles SA Power Networks

NETWORK DIRECTIVE - ND P1

NETWORK MANAGEMENT GROUP

AUTHORISING OFFICER:

RESPONSIBLE MANAGER: Stephen Jolly Richard Twisk Issued: June 2009

GM Demand & Network Management

Review By: April 2012

Page 32 of 38

Issue: 1/99

STANDARD LOCATION FOR POLES 1.

PURPOSE This Directive defines the position of SA Power Networks poles installed in streets.

2.

SCOPE 2.1 2.2

3.

REFERENCES 3.1 3.2

4.

Nil

RESPONSIBILITIES 5.1 5.2

6.

The Code for the Placement of Infrastructure Service in New and Existing Streets, a Public Utilities Advisory Committee (PUACC) publication. TS 107 - “Technical Standard for Line Design”.

DEFINITIONS 4.1

5.

This Directive is applicable to locating the position of SA Power Networks poles installed in streets. It is not applicable to public lighting co lumns.

Executive Manager Network is responsible for the application of this Directive Manager Performance and Risk is responsible for the content of this Directive

DIRECTIVE 6.1 6.2 6.3 6.4

The number of poles in any street will be kept to a minimum. Where SA Power Networks installs poles in a street they should be placed in accordance with the details outlined below. For new installations, poles will be located in accordance with the Code for the Placement of Infrastructure Service in New and Existing Streets. Position of Poles in Relation to Boundary Line Poles shall be placed : 



6.5

On an alignment parallel to the property boundary.

For new installations, poles will be located in accordance with the Code for the Placement of Infrastructure Service in New and Existing Streets. Position of Poles in Relation to Fence Line Poles will be placed on the extension of the fence line dividing two properties when : 

TS-107

At a distance from the property boundary which has been negotiated with the appropriate Council.

There will be driveways on both properties which will be adjoining the dividing fence.




Page 32 of 38


6.6

6.7



Neither property will have a driveway adjoining the dividing fence.



The position of the driveways on either property is not known.

When there will be only one driveway adjoining the fence-line, poles will be located as near as practicable to 0.6m from the extension of the fence line dividing the two properties and on the side of the property in which there will not be a driveway adjoining the dividing fence. When a customer requests that a pole be located in a position other than those set out above, it will be placed in an agreed position in front of that customer’s property. Where appropriate, the customer must agree to a service line to an adjoining property crossing their property. Where no land subdivision has taken place, poles will be located in the most suitable positions from local and technical considerations. Position of Transformer Poles In addition to the above, transformer poles are to be located to minimise the visual impact where practical. Also, the location must ensure that access to two sides of the pole is maintained to replace the transformer. Position of Poles at Street Intersections The location of poles erected at street intersections will be determined by the above requirements and : 

Giving due consideration to traffic requirements



Considering the needs of the property owner adjacent to the pole



Consideration of public lighting requirements.

6.8

Position of Service Poles The location of service poles will be determined by the above requirements. They will be erected so that the strong direction of the pole will be at right angles to the route of the roadway. 6.9 New poles will be placed in a standard location where practical, only Manager Customer Supply can approve a non-standard pole location. 6.10 Where practicable poles that are located in non-standard positions should be replaced in a standard location as defined in this directive. Otherwise replace in a similar position.

TS-107




Page 33 of 38


APPENDIX D: Network Directive-ND J4-Construction of New Power Lines SA Power Networks NETWORK GROUP

NETWORK DIRECTIVE - ND J4 AUTHORISING OFFICER:

RESPONSIBLE MANAGER: Jehad Ali Doug Schmidt Issued: April 2012

GM Network Management

Page 34 of 38

Review By: February 2015

CONSTRUCTION OF NEW POWER LINES 1.

PURPOSE To define the standard for construction of new electricity supply lines

2.

SCOPE To define the standard construction types for overhead and underground electricity supply lines.

3.

REFERENCES 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19

4.

The Electricity Act 1996 and amended Regulations (ie Technical and Vegetation Clearance) Manual 10 The Development Act 1993 and amended Development Regulations. The South Australian Distribution Code. Electricity Supply Association of Australia (ESAA) HB C(b) 1 - “Guidelines fo r Design and Maintenance of Distribution and Transmission Lines”. TS107 - “Line design standard for overhead distribution systems”. TS085 - “Trenching & Conduit Standard”. TS087 - “Construction standards for underground cable networks”. TS100 - “Electrical design standard for underground cable networks”. TS 102 - “Easements for the Distribution Network”. ND F2 - “Disconnection for Bushfire Risk Mitigation”. ND X1 - “Procurement of Easements”. NGQP 315 - 33kV Line Connections/Alterations. NGQP 620 - Customer Response Procedure. Annex D. NGQP 663 - Sub transmission Lines. Distribution Handbook for CPO’s. SA Power Networks-Drawings”. NICC-252 – Application to Cross Railways. Australian Rail Track Corporation (ARTC). TransAdelaide.

DEFINITIONS 4.1

4.2

TS-107

BFRA (Bushfire Risk Area) - as defined in the Regulations associated with the Electricity Act 1996 ie “the part of the state shown in the maps in schedule 3 as the bushfire risk area excluding the areas shown in those maps as nonbushfire risk areas”. HBFRA (High Bushfire Risk Area) - as defined by maps issued by SA Power Networks from time to time (subset of the BFRA). See BFRMM - Manual 8. Authorised: Jehad Ali



Page 34 of 38


NBFRA (Non Bushfire Risk Area) - as defined in the Regulations associated with the Electricity Act 1996 ie “the part of the state sh own in the maps in schedule 3 as the nonbushfire risk area excluding the areas shown in those maps as bushfire risk areas”. 4.4 Bare - Bare Conductor 4.5 CC - Covered Conductor 4.6 ABC - Aerial Bundled Cable 4.7 CCT - Covered Conductor Thick (equivalent to SA Power Networks- Insulated Unscreened Conductor) 4.8 LV (Low Voltage Mains) - electricity distribution mains of voltage less than 1000 Volts. 4.9 HV (High Voltage Mains) - electricity distribution mains of voltage g reater than 1000 Volts and less than 33,000 Volts (nominal). 4.10 FDL 3 (Fire Danger Level 3) - FDL 3 conditions within a CFS Fire Ban District exist when: 





5.

a Total Fire Ban or Special Fire Ban has been declared by the Bureau of Meteorology; and the mean wind speed equal to or exceed 63 kph (ie gale force winds).

RESPONSIBILITIES 5.1 5.2

6.

the Fire Danger Index, as calculated by the Bureau of Meteorology, is greater than 50; and

The General Manager Networks is responsible for the application of this Directive. The Manager Customer Supply is responsible for the content.

DIRECTIVE 6.1

6.2 6.3 6.4 6.5

6.6

6.7

6.8

All distribution lines erected for SA Power Networks must be designed and constructed in accordance with the Electricity Act, amended Regulations and the South Australian Distribution Code. SA Power Networks preferred construction method is Bare overhead for HV throughout South Australia. These lines will be designed and constructed in accordance with TS107. SA Power Networks preferred construction method is ABC overhead for LV throughout South Australia. These lines will be designed and constructed in accordance with TS107. Triangulated construction should be used for HV in the BFRA and HBFRA of the State. Other standard overhead construction methods that SA Power Networks employ will be CC, CCT & ABC for HV in the HBFRA’s and BFRA’s. It must be demonstrated that the benefits exceed the initial higher cost to use these construction methods. The benefits to be considered are Customer funding of additional cost and operation and maintenance costs (eg vegetation clearance). The construction method chosen must provide the lowest possible “whole of life” costs after considering, design, construction, vegetation clearance, operation and maintenance costs of the supply line. Future costs will be Net Present Valued using the current SA Power Networks practice. Underground HV and LV mains will be installed in Local Council designated underground mains areas. They will be designed and installed in accordance with TS085, TS087 and TS100. Electricity Supply lines that supply strategic loads (eg major communities, emergency services and essential services) in the HBFRA which require electricity during FDL 3 conditions and satisfy following criteria can be left energised: 



TS-107

constructed to transmission voltage design standards eg bare 11kV constructed to 33kV separation and clearances; and/or fully covered electricity distribution systems o

insulated underground services;

o

LV ABC with covered LV isolators;




Page 35 of 38

TS-107 - Overhead Line Design Standard for Transmission & Distribution Systems o

neutral screen LV services or other insulated LV lines;

o

11kV CCT or ABC conductor with no exposed live parts (The CMEN conductor of a CCT system and the Current Limiting Arcing Horns will for this purpose not be considered a live part).

For an electricity supply line to be constructed or reconstructed, to be left energised under FDL 3 conditions, requires the approval of General Manager Networks or nominee. 6.9

6.10

6.11 6.12 6.13

The construction of a new transmission line that will operate at 33kV or greater is subject to the provisions of the Development Act 1993 and the amended Development Regulations. The approval of this new transmission line may require the preparation of an environmental impact statement. Refer to Procedures NGQP 315 and NGQP 663. High Load Corridors (designated roads and highways to facilitate the movement of high loads through out the State) will have a minimum clearance between the carriageway and conductors of 9 metres. Major Loads will be supplied in accordance with Annex D of NGQP 620. All HV & LV constructions arrangements must be in accordance with SA Power Networks E-Drawings. Approval is required from the Network Standards Manager before any of the following are specified and erected on the same structure: 



same voltage HV arrangements are combined and a single E-Drawing, showing the combination, does not exist; or E-Drawings do not exist for the proposed arrangement(s).

6.14 All lines over, on or under private property must be protected by a registered easement in accordance with TS 102 “Easement Standard for the Distribution Networks”. 6.15 Clearance to Railway Lines. The preferred method of crossing railway lines is with the use of underground construction methods, however overhead construction is an option. In instance, consultation with and approval from the relevant Rail Authority is required. Refer to NICC-252 for the form” Application to Cross Railways with Power Cables” .

TS-107




Page 36 of 38


APPENDIX E: Conductor Measurement Sheet

CONDUCTOR MEASUREMENT SHEET Page ...... of...... Project Name

SA Power Networks Reference

Location

FEATURES TO BE MEASURED Conductor tie-off tension

RESULT

REMARKS

Conductor Stringing tension

Conductor finished clearance from SA Power Networks designated point

Contractor's Company Name Contractor's Name Contractor's Signature Date

TS-107




Page 37 of 38

Overhead Line Design Standard Transmission Distribution System

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