Technical Standard - 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 Page 1 of 38

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

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

Revision Notice: Date

Explanation 

September 2010  3 September 2012

7 December 2012

  

Interim update to TS107. Appendix-B table: “WB Sub-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, 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 the said information or reliance placed on it; and c) Make no representations, either expressed or implied, as to the suitability of the said information 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

TS-107

Authorised: Jehad Ali

Date of Publication: 07 December 2012 Page 2 of 38

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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.

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

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

TS-107

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Contents

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

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 11.3 I2t 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

TS-107

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10. INSULATORS ................................................................................................. 12

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

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 ......................................................................................... 34

6.

DIRECTIVE .................................................................................................... 34

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

TS-107

Authorised: Jehad Ali

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

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

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 Transmission 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

TS-107

Built up suburbs and townships, level wooded country.

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1.

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: 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 filled with concrete and the steel sections are 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 line, 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.

TS-107

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All wind loads in Pa, working load

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

Loading Parameters on Poles

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 1.1 At 15 deg C plus wind 2. Line or angle pole 1.0 3. Dead-end pole (Temporary or permanent) 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 along the line using the standard methods of design provided the crossarms and extension pieces are capable 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.

TS-107

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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.

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

TS-107 - Overhead Line Design Standard for Transmission & Distribution Systems 7.4

Materials

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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Concrete for footings shall have a minimum compressive strength of 12 MPa at 7 days and 20 MPa at 28 days.

TS-107 - Overhead Line Design Standard for Transmission & Distribution Systems 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 life. 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 constructed 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. Authorised: Jehad Ali

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8.2

TS-107 - Overhead Line Design Standard for Transmission & Distribution Systems 9.3

Network Directive ND J4

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 * NBFRA’s of Adelaide Rural Backbones & Rural Spurs 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 map 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

TS-107

Type

Cap and pin Standard profile

Minimum strength

refer line hardware

Corona Ring

No

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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.

TS-107 - Overhead Line Design Standard for Transmission & Distribution Systems 10.2

Tension

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

TS-107

11kV lines

11kV + 10 % = 12kV

33kV lines

33kV + 10 % = 36kV

66kV lines

66kV + 10% = 72.6kV

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Table - 8

TS-107 - Overhead Line Design Standard for Transmission & Distribution Systems 11.2

Lightning Withstand Voltage

Table - 12 11kV lines

95kV

33kV lines

170kV

66kV lines

325kV

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

11.3

I2t 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 11kV 33kV 66kV Phase to Earth 255mm 350mm 690mm Phase to Phase 255mm 400mm 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.

TS-107

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

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

1 Equiv. Alum Area mm2 41.10 76.30 122.00 180.00 301.00 495.00

2 Stranding and Wire Diameter mm 7/2.75 7/3.75 7/4.75 19/3.50 37/3.25 61/3.25

ALL ALUMINIUM CONDUCTOR (AAC) (Metric) 6 7 8 9

3

4

5

UTS

Resistance at 20°C

Total Diameter

Cross Sectional Area (A)

kN 6.72 11.80 18.90 28.70 48.20 75.20

Ohms/km 0.6890 0.3700 0.2320 0.1570 0.0940 0.0572

mm 8.3 11.3 14.3 17.5 22.8 29.3

mm2 41.6 77.3 124.0 182.8 307.0 506.1

Mass

and C2 =

kg/m W W100 W500 0.113 1.099 1.377 4.293 0.211 2.080 2.367 6.021 0.339 3.335 3.629 7.890 0.503 4.925 5.226 10.041 0.845 8.289 8.594 14.055 1.400 18.247 18.480 23.400

; 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

Authorised: Jehad Ali

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

11 Modulus of Elasticity (E)

Conductor Load N/m

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 =

10

kPa 59 x 106 59 x 106 59 x 106 56 x 106 56 x 106 54 x 106

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12 Coefficient of Expansion (a) per °C x 10-6 23.0 23.0 23.0 23.0 23.0 23.0

13

14

Constants C1 319.7 436.0 552.1 650.9 846.2 1067.0

Date of Publication: 07 December 2012 Page 15 of 38

C2 56.4 104.9 168.3 233.9 395.3 628.5

A-2: All Aluminium Conductors (AAC) - Imperial

1 Equiv Copper Area in2 .014 .024 .037 .07 .117 .183 .28 .497 .57

2 Equiv Alum Area mm2 14.34 26.50 38.75 72.60 121.13 191.21 292.24 518.71 595.25

3 Stranding and Wire Diameter inches 7/.064 7/.087 7/.1052 7/.144 7/.186 37/.102 37/.1261 37/.168 61/.1403

4 UTS kN 2.62 4.76 6.63 11.79 18.86 31.58 45.59 77.18 91.63

ALL ALUMINIUM CONDUCTOR (AAC) (Imperial) 5 6 7 8 Cross Resistance Total Sectional Mass Diameter at 20°C Area (A) Ohms/km mm mm2 kg/m 1.9685 4.8 14.5 .0399 1.0641 6.6 26.8 .0733 0.7273 8.0 39.1 .1073 0.3882 11.0 73.5 .2008 0.2329 14.2 122.7 .3362 0.1487 18.1 195.0 .5385 0.0970 22.4 297.7 .8271 0.0546 29.9 529.2 1.4624 0.0477 32.0 605.8 1.6855

9

10 Conductor Load N/m

W 0.391 0.719 1.052 1.970 3.298 5.253 8.114 14.346 16.535

W100 0.625 0.977 1.323 2.254 3.589 5.557 8.418 14.653 16.843

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 on 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

Authorised: Jehad Ali

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

11

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12

13

Constants

W500 2.470 3.392 4.149 5.829 7.817 10.495 13.842 20.709 23.037

C1 191.9 261.5 314.3 430.3 566.8 691.8 852.1 1136.8 1206.4

C2 20.3 37.6 54.8 102.9 171.2 263.4 402.7 714.2 807.1

Date of Publication: 07 December 2012 Page 16 of 38

A-3: All Aluminium Conductors (ACSR/GZ & ACSR/AZ) - Metric

1 Equiv Alum Area mm2 35.2 65.2 105.0 144.0 244.0 373.0 508.0

2 3 Stranding and Wire Diameter mm Alum 6/2.75 6/3.75 6/4.75 30/2.5 30/3.25 54/3.0 54/3.5

Steel 1 /2.75 1/3.75 7/1.6 7/2.5 7/3.25 7/3.0 7/3.5

4 UTS

kN 12.5 21.5 31.9 61.6 104.0 115.0 153.0

ALL ALUMINIUM CONDUCTOR - GALVANISED STEEL REINFORCED (ACSR/GZ) ALL ALUMINIUM CONDUCTOR - ALUMINISED STEEL REINFORCED (ACSR/AZ) (Metric) 5 6 7 8 9 10 11 12 Resistance Total Cross Mass Conductor Load Modulus Diameter Sectional N/m of at 20°C Area (A) Elasticity (E) Ohms/km mm mm2 kg/m W W100 W500 kPa .8050 8.25 41.6 0.144 1.413 1.636 4.360 79 x 106 .4330 11.3 77.3 0.268 2.629 2.861 6.232 79 x 106 .2710 14.3 120.4 0.404 3.963 4.213 8.175 76 x 106 .1960 17.5 181.6 0.675 6.622 6.849 10.973 80 x 106 .1160 22.75 306.9 1.141 11.193 11.421 15.959 80 x 106 .0758 27.0 431.2 1.440 14.126 14.381 19.540 68 x 106 .0557 31.5 586.9 1.960 19.228 19.484 24.855 68 x 106

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 and 2. 1973 except for conductor marked * 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

Authorised: Jehad Ali

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

13 Coefficient of Expansion (a) per °C x 10-6 19.3 19.3 19.9 18.4 18.4 19.9 19.9

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14 15 Constants

C1 370.0 504.4 617.5 778.0 1011.4 1105.3 1289.5

C2 63.4 117.9 182.1 267.3 451.8 583.5 794.2

Date of Publication: 07 December 2012 Page 17 of 38

A-4: All Aluminium Conductors (ACSR/GZ & ACSR/AZ) - Imperial

1 Equiv Copper Area in2 .03 .06 .10 .125 .15 .225 .35 .5

2 Equiv Alum Area mm2 33.14 62.10 103.60 128.58 154.67 236.40 372.35 516.92

ALL ALUMINIUM CONDUCTOR - GALVANISED STEEL REINFORCED (ACSR/GZ) ALL ALUMINIUM CONDUCTOR - ALUMINISED STEEL REINFORCED (ACSR/AZ) (Imperial) 3 4 5 6 7 8 9 10 11 12 Stranding and Wire Cross Conductor Load Resistanc Total Diameter UTS Sectional Mass N/m e at 20°C Diameter mm Area Alum Steel kN Ohms/km mm mm2 kg/m W W100 W500 6/.1052 1/.1052 11.83 0.5808 8.0 39.4 0.1355 1.330 1.553 4.228 6/.144 1/.144 21.62 0.4538 11.0 7305 0.2544 2.496 2.726 6.027 6/.186 7/.062 32.47 0.2723 14.2 118.7 0.3957 3.882 4.132 8.080 30/.093 7/.093 56.58 0.2198 16.5 161.9 0.6040 5.925 6.151 10.172 30/.102 7/.102 67.48 0.1826 18.1 194.8 0.7275 7.136 7.362 11.539 30/1261 7/.1261 101.51 0.1203 22.4 298.1 1.1113 10.902 11.130 15.640 54/.118 7/.118 116.54 0.0760 27.0 430.3 1.4430 14.156 14.410 19.553 54/.139 7/.139 159.78 0.0548 31.8 596.8 2.0009 19.629 19.884 25.253

Notes: 1. Conductor Loads in Column 11 and 12 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 5 to 14 are direct conversions for values shown on 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

Authorised: Jehad Ali

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

WARNING: Printed copies of this document ARE DEEMED UNCONTROLLED. The most up-to-date version is lo

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13

14

Constants

C1 360.7 493.5 596.9 723.4 793.0 980.7 1098.8 1292.9

C2 59.1 111.3 167.3 221.8 266.6 408.3 560.5 777.5

Date of Publication: 07 December 2012 Page 18 of 38

A-5: All Galvanised Steel Conductors (SC/GZ) - Metric

1

2

Equiv Alum Area mm2 2.95 2.32 6.26 9.79

GALVANISED STEEL CONDUCTOR (SC/GZ) (Metric) 6 7 8 9

3

4

5

Stranding and Wire Diameter

UTS

Resistance at 20°C

Total Diameter

Cross Sectional Area (A)

Mass

mm 3/2.75 7/1.60 19/1.60 19/2.00

kN 22.2 17.5 47.6 74.4

Ohms/km 9.7 12.4 4.5 2.9

mm 5.93 4.80 8.00 10.00

mm2 17.8 14.1 38.2 59.7

kg/m 0.139 0.113 0.309 0.483

Conductor Load N/m W 1.364 1.109 3.031 4.738

W100 1.487 1.208 3.135 4.842

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 =

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

10

Authorised: Jehad Ali

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

W500 3.264 2.644 5.019 6.888

11 Modulus of Elasticity (E) kPa 193 x 106 193 x 106 193 x 106 193 x 106

12 Coefficient of Expansion (a) per °C x 10-6 11.5 11.5 11.5 11.5

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13

14

Constants

C1 378.6 336.4 554.2 692.8

C2 39.6 31.2 84.8 132.5

Date of Publication: 07 December 2012 Page 19 of 38

A-6: All Galvanised Steel Conductors (SC/GZ) - Imperial

1 Equiv Copper Area in2 0.0026 0.0090 0.0096

2 Equiv Alum Area mm2 2.72 9.57 10.10

3 Stranding and Wire Diameter inches 3/.104 7/.128 19/.080

4 UTS kN 20.51 72.51 76.95

GALVANISED STEEL CONDUCTOR (SC/GZ) (Imperial) 5 6 7 8 Cross Resistance Total Sectional Mass Diameter at 20°C Area (A) Ohms/km mm mm2 kg/m 10.31 5.7 16.5 0.1294 3.28 10.0 58.1 0.4880 3.06 10.2 61.6 0.4954

9

10 Conductor Load N/m

W 1.270 4.787 4.860

W100 1.392 4.885 4.965

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 on 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

Authorised: Jehad Ali

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

11

W500 3.115 6.834 7.030

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12

13

Constants

C1 362.8 685.5 689.7

C2 36.4 128.1 131.3

Date of Publication: 07 December 2012 Page 20 of 38

A-7: Hard Drawn Copper Conductors - Imperial

1 Equiv Copper Area in2 .0125 .0225 .035 .06 .10 .15 .20 .25 .25 .30 .30 .50 .60

2 Equiv Alum Area mm2

3 Stranding and Wire Diameter inches 7/.048 7/.064 7/.080 7/.104 7/.136 19/.101 19/.116 37/.093 19/.131 19/.144 37/.103 19/.185 37/.144

4 UTS kN 3.44 6.09 9.43 15.75 26.11 39.59 51.60 64.05 64.94 77.40 80.51 123.22 150.35

HARD DRAWN COPPER CONDUCTOR (Imperial) 5 6 7 8 Cross Resistance Total Sectional Mass Diameter at 20°C Area (A) Ohms/km mm mm2 kg/m 2.1905 3.7 8.1 0.0759 1.2314 4.9 14.4 0.1302 0.7874 6.1 22.5 0.2054 0.4659 7.9 38.1 0.3438 0.2723 10.4 64.7 0.5878 0.1783 12.8 97.0 0.8899 0.1389 14.7 127.9 1.1667 0.1105 16.5 160.3 1.4673 0.1086 16.6 161.3 1.4867 0.0899 18.3 193.5 1.7977 0.0902 18.5 196.7 1.8349 0.0544 23.5 322.6 2.9614 0.0453 25.6 387.1 3.5031

9

10 Conductor Load N/m

W 0.744 1.277 2.014 3.371 5.765 8.727 11.442 14.390 14.579 17.629 17.994 29.042 34.354

W100 0.829 1.366 2.104 3.462 5.857 8.820 11.536 14.484 14.673 17.723 18.088 29.136 34.449

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 on SA Power Networks drawing P-30750 3. C1 =

and C2 =

11

W500 1.974 2.753 3.653 5.202 7.751 10.830 13.608 16.596 16.786 19.860 20.231 31.328 36.662

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12

13

Constants

C1 199.9 265.7 333.2 434.5 567.3 700.2 797.2 890.0 898.5 987.1 984.9 1267.6 1377.2

C2 16.3 28.7 45.0 76.1 130.5 198.6 257.0 321.1 327.5 395.5 393.9 654.2 774.3

; 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

Authorised: Jehad Ali

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

Date of Publication: 07 December 2012 Page 21 of 38

A-8: All Aluminium Clad Steel Conductors (SC/AC) - Metric & Imperial

1

2

Equiv Alum Area

Stranding and Wire Diameter

UTS

Cross Resistance Total Sectional Diameter at 20°C Area (A)

mm2 5.91

mm 3/2.75

kN 22.7

Ohms/km 4.8

1 Equiv Copper Area in2 .005 .012

2 Equiv Alum Area mm2 5.24 12.16

3

4

5

ALUMINIUM CLAD STEEL CONDUCTOR (SC/AC) (Metric) 6 7 8 9

mm 5.93

Mass

10

Conductor Load N/m

mm2 kg/m W W100 17.82 0.118 1.157 1.3 Values taken from AS1222, Part 2 - 1973

W500 3.183

11 Modulus of Elasticity (E) kPa 162 x 106

and C2 =

Coefficient of Expansion (a) per °C x 10-6 12.9

ALUMINIUM CLAD STEEL CONDUCTOR (SC/AC) (Imperial) 3 4 5 6 7 8 9 10 11 Stranding Cross Resistance Total Conductor Load and Wire UTS Sectional Mass Diameter N/m at 20°C Diameter Area (A) inches kN Ohms/km mm mm2 kg/m W W100 W500 3/.1019 20.16 5.42 5.59 15.69 0.104 1.022 1.161 2.975 7/.1019 44.57 2.33 7.77 36.44 0.246 2.407 2.529 4.570 Design figures in column 4 to 13 are direct conversions for values shown on SA Power Networks drawing P-30736

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 on SA Power Networks drawing P-30750 3. C1 =

12

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13

14

Constants

C1 346.8

12

C2 37.2

13

Constants

C1 325.4 496.0

C2 32.8 76.2

; 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

Authorised: Jehad Ali

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

Date of Publication: 07 December 2012 Page 22 of 38

A-9: All Aluminium Alloy Conductors - 1120 (AAAC/1120) Metric & 6201A (AAAC/6201) - Metric 3

4

ALL ALUMINIUM ALLOY 1120 (AAAC / 1120) - (Metric) 5 6 7 8 9 10

1

2

Equiv Alum Area

Stranding and Wire Diameter

UTS (CBL)

Cross Resistance Conductor Sectional Diameter at 20°C Area (A)

mm2 39.7 73.7 118

mm 7/2.75 7/3.75 7/4.75

kN 9.91 17.6 27.1

Ohms/km 0.713 0.383 0.239

mm 8.25 11.3 14.3

mm2 41.58 77.28 124.0

Conductor Load N/m

Mass

kg/m 0.113 0.211 0.339

W 1.099 2.080 3.335

W100 1.377 2.367 3.629

W500 4.290 6.021 7.890

11 Final Modulus of Elasticity (E) kPa 59 x 106 59 x 106 59 x 106

12 Coefficient of Linear Expansion (a) per °C 23 x 10-6 23 x 10-6 23 x 10-6

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

2 Stranding and Wire Diameter

3 UTS (CBL)

4 5 6 Resistance Conductor Cross Diameter Sectional at 20°C Area (A)

7 Mass

8

9 Conductor Load N/m

10

11 Final Modulus of Elasticity (E) kPa 59 x 106 59 x 106 59 x 106

12 Coefficient of Linear Expansion (a)

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13

14

Constants

C1 319.7 436.0 552.1

C2 56.4 104.9 168.3

13 14 Constants

mm2 mm kN Ohms/km mm mm2 kg/m W W100 W500 C1 C2 per °C -6 35.4 7/2.75 11.6 0.799 8.25 41.58 0.113 1.099 1.377 4.290 23 x 10 319.7 56.4 -6 65.8 7/3.75 21.7 0.430 11.3 77.28 0.211 2.080 2.367 6.021 23 x 10 436.0 104.9 -6 106 7/4.75 34.8 0.268 14.3 124.0 0.339 3.335 3.629 7.890 23 x 10 552.1 168.3 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

Authorised: Jehad Ali

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

Date of Publication: 07 December 2012 Page 23 of 38

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

Pole Size

Strength In Newtons

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)

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

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

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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

Date of Publication: 07 December 2012 Page 24 of 38

B-2: Transformer Poles Data Wind Pressures: Exposed Situations

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

M Z

X Y

p

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

h

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

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Allowable Combined Loading on Pole The combined loading on the pole 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 Y

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) T/F breadth (mm)

Z Fs Fw Fs’ Fw’

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

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

Authorised: Jehad Ali

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Date of Publication: 07 December 2012 Page 25 of 38

B-3: Distribution Poles Construction Details

TS-107

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

Date of Publication: 07 December 2012 Page 26 of 38

B-4: Transformer Details The figures below (which have been 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

Authorised: Jehad Ali

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

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

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

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

Date of Publication: 07 December 2012 Page 27 of 38

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

Authorised: Jehad Ali

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

WARNING: Printed copies of this document ARE DEEMED UNCONTROLLED. The most up-to-date version is lo

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

Height * mm

Width * mm

Depth * mm

1430

1070

1300

1400 1430

1040 1070

1250 1250

Date of Publication: 07 December 2012 Page 28 of 38

B-6: “WB” Sub-Transmission Poles (Design Strength & Supply Item Numbers) Pole Drg No. WB1510

Supply Item No. 1011246

WB1515

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

6.60

Fw (kN) 1.47

1011247

10.30

2.98

15-155x18-425

150UB18

15.0m

2

WB1520

1011248

12.90

4.30

15-179x22-440

180UB22

15.0m

3

WB1526

1011249

18.50

7.10

15-207x30-460

200UB30

15.0m

U1

WB1532

1011250

21.50

7.00

15-162x37-430

150UC37

15.0m

3A

WB1536

1011251

29.50

13.40

15-206x52-397

200UC52

15.0m

U1

WB1540

1011252

41.50

11.80

15-203x46-645

200UC46

15.0m

U4

WB1550

1011253

53.50

15.30

15-205x60-640

200UC60

15.0m

U4

WB1555

1011254

59.00

23.50

15-254x73-580

250UC73

15.0m

U4

WB1565

1011255

71.50

28.90

15-260x89-575

250UC89

15.0m

U4

WB1615

1011256

16.70*

4.80*

16.5-155x18-415 Compound Section

150UB18/14

16.5m

2

WB1640

1011465

30.90

10.60

16.5-203x46-535

200UC46

16.5m

U3

WB1645

1011466

38.00

12.00

16.5-206x52-585

200UC52

16.5m

5

WB1660

1011467

64.00

25.80

16.5-260x89-575

250UC89

16.5m

U4

WB1815

1011257

9.10

2.50

18-155x18-450 Compound Section

150UB18/14

18.0m

2

WB1820

1011258

11.60

3.63

18-179x22-465

180UB22

18.0m

3

WB1826

1011259

17.10

5.92

18-207x30-510

200UB30

18.0m

U1

WB1830

1011260

23.00

9.20

18-256x37-550Compound Section

250UB37/25

18.0m

U2

WB1840

1011261

31.00

10.50

18-203x46-500

200UC46

18.0m

U3

WB1845

1011262

34.50

10.80

18-206x52-585

200UC52

18.0m

5

WB1850

1011263

45.00

13.90

18-210x60-610 Compound Section

200UC60/46

18.0m

U4

Yes

WB1855 1011264 47.50 * = Ultimate Strength Values

19.00

18-254x73-580

250UC73

18.0m

U4

No

TS-107

Fs (kN)

Pole Designation

Steel Section

Overall Length

Former

15-125x13-415

125x65x13TFB

15.0m

1

Authorised: Jehad Ali

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

Final Design Complete Yes Yes Yes Yes Yes Yes Yes No No No Yes Yes Yes Yes Yes Yes Yes Yes Yes No

Date of Publication: 07 December 2012 Page 29 of 38

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

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

310UC118/97

19.5m

U5

310UC137/97

19.5m

U5

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

21.0m 21.0m 21.0m 21.0m

3 U1 U2 U3

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

Authorised: Jehad Ali

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

WARNING: Printed copies of this document ARE DEEMED UNCONTROLLED. The most up-to-date version is lo

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

Final Design Complete Yes Yes Yes Yes No Yes No Yes Yes No Yes Yes Yes No Yes Yes No Yes No Yes Yes

Date of Publication: 07 December 2012 Page 30 of 38

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

WB2325

1011294

12.40

4.60

22.5-207x30-475 Compound Section

200UBx10.5m 200UB30x12m

22.5m

U1

WB2326

1011295

13.00

4.50

22.5-162x37-400

150UC37

22.5m

2

WB2330

1011297

21.00

7.20

22.5-256x37-525 Compound Section

250UB37/31

22.5m

U2

WB2340

1011299

21.50

7.40

22.5-203x46-535

200UC46

22.5m

U3

WB2350

1011300

27.00

9.60

22.5-210x60-520 Compound Section

200UC60/46

22.5m

U3

WB2355

1011301

37.50

14.80

22.5-254x73-590

250UC73

22.5m

U4

WB2360

1011302

45.00

18.10

22.5-260x89-575 Compound Section

250UC89/73

22.5m

U4

WB2370

1011303

72.00

29.00

22.5-315x118-700 Compound Section

310UC97x12m 310UC118x10.5m

22.5m

U5

WB2371

1010386

19.00

10.80

22.5-307x46-470

310UB46

22.5m

4

WB2375

1011304

84.10

33.50

U5

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

WB2430

1011306

15.90

6.60

24-256x37-525 Compound Section

250UB37/31

24.0m

U2

WB2440

1011307

20.00

6.90

24-203x46-535

200UC46

24.0m

U3

WB2625

1011308

10.80

4.00

25.5-207x30-475 Compound Section

200UB30/22

25.5m

U1

WB2630

1011309

14.90

6.00

25.5-256x37-525 Compound Section

250UB37/31

25.5m

U2

WB2641

1011537

13.00

6.00

26 - 203 x 46 - 400

200UC46

25.5

U1

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

Final Design Complete Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes

* = Ultimate Strength Values

TS-107

Authorised: Jehad Ali

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

Date of Publication: 07 December 2012 Page 31 of 38

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

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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

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.

Page 37 of 38

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

APPENDIX F: Atmospheric Corrosion Maps of South Australia APPENDIX G: DPTI’s Maps of High Load Corridor Please Note:

TS-107

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.

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.

Page 38 of 38

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Refer to a Separate Document for following TS-107- Appendix F & G