as∕nzs 3599.1-2003 电压6.35∕11（12）kv及12.7∕22（24）kv聚合绝缘架空电力电缆...

AS/NZS 3599.1:2003

Australian/New Zealand Standard™

Electric cables—Aerial bundled—Polymeric insulated—Voltages 6.35/11 (12) kV and 12.7/22 (24) kV

Part 1: Metallic screened

AS

/NZ

S 3

59

9.1

AS/NZS 3599.1:2003

This Joint Australian/New Zealand Standard was prepared by Joint Technical Committee EL-003, Electric Wires and Cables. It was approved on behalf of the Council of Standards Australia on 8 August 2003 and on behalf of the Council of Standards New Zealand on 19 August 2003. It was published on 11 September 2003.

The following are represented on Committee EL-003:

Australasian Railway Association Australian Electrical and Electronic Manufacturers Association Australian Industry Group Canterbury Manufacturers Association of New Zealand Department of Defence, Australia Department of Mineral Resources, N.S.W. Electrical Contractors Association of New Zealand Electrical Regulatory Authorities Council Electricity Supply Association of Australia Institution of Engineers, Australia Ministry of Economic Development, New Zealand National Electrical and Communications Association

Keeping Standards up-to-date

Standards are living documents which reflect progress in science, technology and systems. To maintain their currency, all Standards are periodically reviewed, and new editions are published. Between editions, amendments may be issued. Standards may also be withdrawn. It is important that readers assure themselves they are using a current Standard, which should include any amendments which may have been published since the Standard was purchased.

Detailed information about joint Australian/New Zealand Standards can be found by visiting the Standards Australia web site at www.standards.com.au or Standards New Zealand web site at www.standards.co.nz and looking up the relevant Standard in the on-line catalogue.

Alternatively, both organizations publish an annual printed Catalogue with full details of all current Standards. For more frequent listings or notification of revisions, amendments and withdrawals, Standards Australia and Standards New Zealand offer a number of update options. For information about these services, users should contact their respective national Standards organization.

We also welcome suggestions for improvement in our Standards, and especially encourage readers to notify us immediately of any apparent inaccuracies or ambiguities. Please address your comments to the Chief Executive of either Standards Australia International or Standards New Zealand at the address shown on the back cover.

This Standard was issued in draft form for comment as DR 03049.

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AS/NZS 3599.1:2003

Australian/New Zealand Standard™



Originated as AS 3599.1—1988. Jointly revised and designated AS/NZS 3599.1:2003.

COPYRIGHT

© Standards Australia/Standards New Zealand

All rights are reserved. No part of this work may be reproduced or copied in any form or by any means, electronic or mechanical, including photocopying, without the written permission of the publisher.

Jointly published by Standards Australia International Ltd, GPO Box 5420, Sydney, NSW 2001 and Standards New Zealand, Private Bag 2439, Wellington 6020

ISBN 0 7337 5487 2

AS/NZS 3599.1:2003 2

PREFACE

This Standard was prepared by the Joint Standards Australia/Standards New Zealand

Committee EL-003, Electric Wires and Cables, and is based on requirements laid down by

the Electricity Supply Association of Australia. This Standard supersedes

AS 3599.1—1988.

The objective of the Standard is to specify construction, dimensions and test requirements

for cross-linked polyethylene insulated individually metallic screened, three phase, aerial

bundled cables (ABCs), steel wire supported, for working voltages 6.35/11 (12) kV and

12.7/22 (24) kV.

For reasons of standardization and rationalization, this Standard provides for the

construction, dimensions, and test requirements of only a limited range of individually

screened three-core cables.

This Standard is complementary to the range of cables covered in AS/NZS 3599.2, Electric

cables—Aerial bundled—Polymeric insulated—Voltages 6.35/11 (12) kV and 12.7/22

(24) kV, Part 2: Non-metallic screened, and in AS/NZS 1429.1, Electric cables—Polymeric

insulated, Part 1: For working voltages 1.9/3.3 (3.6) kV up to and including 19/33 (36) kV.

This Standard is generally compatible with the appropriate requirements specified in those

Standards.

This Standard differs from the previous edition in the following significant ways.

(a) The Standard has been published as a Joint Australian/New Zealand Standard.

(b) The specifications for the conductor screen, insulation and insulation screen have

been referenced to AS/NZS 1429.1.

(c) The HDPE sheath material has been referenced to AS/NZS 3808.

(d) The word ‘catenary’ has been deleted from the definition of the support wire.

(e) Current carrying capacities have been provided for both a 30°C and a 40°C ambient

air temperature.

(f) Recalculated values have been provided for the recommended copper screen wires

and the mechanical characteristics of the support wire.

The term ‘informative’ has been used in this Standard to define the application of the

appendix to which it applies. An ‘informative’ appendix is only for information and

guidance.


3 AS/NZS 3599.1:2003

CONTENTS

Page

1 SCOPE........................................................................................................................ 4

2 REFERENCED DOCUMENTS.................................................................................. 4

3 DEFINITIONS............................................................................................................ 5

4 VOLTAGE DESIGNATION ...................................................................................... 6

5 MAXIMUM CONDUCTOR TEMPERATURES........................................................ 8

6 CONDUCTORS.......................................................................................................... 8

7 CONDUCTOR SCREEN ............................................................................................ 8

8 INSULATION............................................................................................................. 8

9 INSULATION SCREEN............................................................................................. 8

10 BEDDING TAPE........................................................................................................ 8

11 METALLIC SCREEN................................................................................................. 8

12 WATER-BLOCKING OF SCREENS (OPTIONAL) .................................................. 9

13 SEPARATOR TAPE(S) .............................................................................................. 9

14 SHEATH..................................................................................................................... 9

15 PHASE IDENTIFICATION...................................................................................... 10

16 CABLE IDENTIFICATION ..................................................................................... 10

17 METRE MARKING ................................................................................................. 10

18 SUPPORT WIRE ...................................................................................................... 10

19 LAYING UP ............................................................................................................. 12

20 PREPARATION FOR DELIVERY .......................................................................... 12

21 MARKING OF DRUMS........................................................................................... 12

22 TESTS....................................................................................................................... 13

APPENDICES

A CABLE DATA AND RECOMMENDATIONS......................................................... 16

B PURCHASING GUIDELINES.................................................................................. 21

C DIAMETER OF DRUM BARRELS AND INSTALLATION BENDING

RADII FOR CABLES................................................................................................ 22

AS/NZS 3599.1:2003 4

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STANDARDS AUSTRALIA/STANDARDS NEW ZEALAND

Australian/New Zealand Standard



1 SCOPE

This Standard specifies the construction, dimensions, and test requirements for cross-linked

polyethylene (XLPE) insulated, individually metallic screened, high density polyethylene

(HDPE) sheathed, steel wire supported, three phase, aerial bundled cable (ABC) (see

Figure 1), for electricity supply.

NOTES:

1 Cable data and recommendations to assist in the selection of the appropriate cables are given

in Appendix A.

2 Purchasing guidelines are provided in Appendix B.

2 REFERENCED DOCUMENTS

The documents below are referred to in this Standard.

AS

1222 Steel conductors and stays—Bare overhead

1222.1 Part 1: Galvanized (SC/GZ)

1222.2 Part 2: Aluminium clad (SC/AC)

3983 Metal drums for insulated electric cables and bare conductors

AS/NZS

1125 Conductors in insulated electric cables and flexible cords

1429 Electric cables—Polymeric insulated

1429.1 Part 1: For working voltages 1.9/3.3 (3.6) kV up to and including 19/33

(36) kV

1660 Test methods for electric cables, cords and conductors

1660.2.1 Part 2.1: Insulation, extruded semi-conductive screens and non-metallic

sheaths—Methods for general application

1660.2.2 Part 2.2: Insulation, extruded semi-conductive screens and non-metallic

sheaths—Methods specific to elastomeric, XLPE and XLPVC

materials

1660.3 Part 3: Electrical tests

2857 Timber drums for insulated electric cables and bare conductors

3008 Electrical installations—Selection of cables

3008.1.1 Cables for alternating voltages up to and including 0.6/1 kV—Typical

Australian installation conditions

3008.1.2 Cables for alternating voltages up to and including 0.6/1 kV—Typical New

Zealand installation conditions

3808 Insulating and sheathing materials for electric cables


5 AS/NZS 3599.1:2003

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IEC

60986 Short-circuit temperature limits of electric cables with rated voltages from 6kV

(Um = 7,2 kV) up to 30 kV (Um = 36 kV)

ESAA (Electricity Supply Association of Australia)

HB C(b)1 Guidelines for design and maintenance of overhead distribution and

transmission lines

3 DEFINITIONS

For the purpose of this Standard, the following definitions apply.

3.1 Approximate value

A value which is neither guaranteed nor checked; e.g. it is used to calculate dimensions for

cable users.

3.2 Conductor screen

A layer or layers of non-metallic semiconductive material applied directly over the

conductor.

3.3 Core (of a cable)

An assembly comprising a conductor, semiconductive conductor screen, insulation and

semiconductive insulation screen.

3.4 Direction of lay

The slope of the conductor wires, screen wires, phase cable, or the like when the phase

cable or, in the case of complete cable, the cable bundle is held vertically.

It is right-hand when the slope is in the direction of the central part of the letter Z, and left-

hand when the slope is in the direction of the central part of the letter S.

3.5 Installation tests

Tests made on installed cable to demonstrate the integrity of the cable and its accessories.

3.6 Insulation screen

A layer or layers of non-metallic semiconductive material applied directly over the

insulation of each core.

3.7 Length of lay

The axial distance of one complete turn of the helix formed by a cable component, e.g. a

wire of the metallic screen or a phase cable.

3.8 Maximum conductor temperature

The maximum temperature at which the conductor of the cable may be operated and it is the

temperature resulting from the combined effect of the ambient conditions and the current

loading of the conductor.

3.9 Metallic screen

A screen of copper wires applied over each core.

AS/NZS 3599.1:2003 6

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3.10 Non-hygroscopic

Applied to a material, means that the material, after being preconditioned in an oven at

50 ±5°C for 24 ±1 h and allowed to cool in a desiccator, does not absorb more than

5 percent by weight of moisture during a 48 h treatment in humidity of 95 ±4 percent at a

temperature of 20 ±5°C.

3.11 Phase cable

An assembly comprising a core, tapes, metallic screen and sheath, which together form one

phase of the bundled cable (see Figure 2).

3.12 Routine tests

Tests made by the manufacturer on each manufactured length of cable to check that each

length meets the specified requirements.

3.13 Sample tests

Tests made by the manufacturer on samples of completed cable, or components taken from

completed cable, at a specified frequency, so as to verify that the finished product meets the

specified requirements.

3.14 Support wire

A steel member provided to support the three laid-up phase cables.

3.15 Type tests

Tests made before supplying, on a general commercial basis, a type of cable covered by this

Standard, in order to demonstrate satisfactory performance characteristics to meet the

intended application. These tests are of such a nature that, after they have been made, they

need not be repeated, unless changes are made in the cable materials or design or

manufacturing process, which might change the performance characteristics.

4 VOLTAGE DESIGNATION

The rated voltages are expressed in the form U0/U (Um):

where

U0 is the r.m.s. power frequency voltage to earth of the supply system for which

the cable is designed

U is the r.m.s. power frequency voltage between phases of the supply system for

which the cable is designed

Um is the maximum r.m.s. power-frequency voltage between any two conductors

for which cables and accessories are designed. It is the highest voltage that can

be sustained under normal operating conditions at any time and at any point in

a system. It excludes temporary voltage variations due to fault conditions and

sudden disconnection of large loads.

The rated voltages U0/U (Um) of the cables recognized in this Standard are 6.35/11 (12) kV

and 12.7/22 (24) kV.


7 AS/NZS 3599.1:2003

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FIGURE 1 CROSS SECTION OF HV ABC

FIGURE 2 COMPONENTS OF ‘PHASE CABLE’ OF HV ABC

AS/NZS 3599.1:2003 8

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5 MAXIMUM CONDUCTOR TEMPERATURES

The temperature of the conductor shall not exceed the following values:

(a) Normal operation ............................................................................................. 90°C.

(b) Emergency operation ..................................................................................... 105°C.

(c) Short circuit operation (5 s max.) ................................................................... 250°C.

NOTES:

1 The maximum temperatures given are based upon the properties of the insulation materials

but in practice may need to be derated to take account of joints and terminations and

environmental conditions.

2 The emergency operation temperature is applicable for an average over several years, of not

more than one period per year. No period shall exceed 36 h and there shall not be more than

three periods in any 12 consecutive months.

3 At the emergency operating temperature the insulation material shall not suffer thermal

degradation. It may however suffer distortion due to external constraints caused by metallic

screens, terminations or joints.

6 CONDUCTORS

Conductors shall be stranded circular compacted aluminium in accordance with

AS/NZS 1125 for conductors other than aerial cables.

A rationalized range of conductor cross-sectional areas is given in Table 1.

7 CONDUCTOR SCREEN

The conductor screen shall comply with the requirements of AS/NZS 1429.1.

8 INSULATION

Insulation shall be XLPE and shall comply with the requirements of AS/NZS 1429.1.

9 INSULATION SCREEN

The insulation screen shall comply with the requirements of AS/NZS 1429.1 and shall be

designed to be hand-stripped without preconditioning (heating).

10 BEDDING TAPE

A textile reinforced semiconductive tape shall be applied over the insulation screen with an

overlap of 2 mm or 10 percent of the tape width, whichever is the larger. The

semiconductive tape may be water-swellable, as specified in Clause 12.2.

The thickness of the semiconductive tape, before application, shall be not less than 0.1 mm.

11 METALLIC SCREEN

11.1 Material and application

The metallic screen shall comprise plain annealed copper wires, helically applied so that it

is in electrical contact with the core throughout the length of cable. The screen wires shall

comply with the requirements of AS/NZS 1125. The individual screen wires shall have the

same nominal diameter, and not vary from the nominal by more than 5 percent. The length

of lay of the screen wires shall not exceed 10 times the overall diameter of the core.

The design gap, i.e. the gap between adjacent wires when equally spaced, calculated by

taking into account the number and nominal diameter of wires and the calculated pitch

circle diameter of the metallic screen, shall not exceed 4 mm.

NOTE: For further information see Appendices A and B.


9 AS/NZS 3599.1:2003

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11.2 Electrical recommendations

See Appendix A.

12 WATER-BLOCKING OF SCREENS (OPTIONAL)

12.1 General

Water-blocking measures may be taken to restrict water penetration along the cable (in the

region of the metallic screens).

12.2 Materials and application

The blocking shall be achieved by a non-biodegradable, water-swellable tape applied under

or over the metallic screen wires. Where applied under the metallic screen, the tape shall be

semiconductive. This tape may replace the textile reinforced semiconductive tape specified

in Clause 10.

Where applied over the metallic screen it need not be semiconductive and may replace the

separator tape(s) specified in Clause 13.

NOTE: Other effective water-blocking materials may be acceptable with the exception of loose

powders, which might constitute a health risk (see Appendix B).

13 SEPARATOR TAPE(S)

Non-hygroscopic tape(s) shall be helically applied, with an overlap, over the metallic

screen, to prevent the penetration of sheath material between the screen wires. The tape(s)

shall be applied so as to avoid the formation of creases.

The separator tape may be water-swellable as specified in Clause 12.2.

14 SHEATH

14.1 Material

The sheath shall be black, high density polyethylene (HDPE) in accordance with

AS/NZS 3808.

14.2 Application

The sheath shall be applied over the screened and taped core. It shall be close fitting and be

readily removable using standard practices.

14.3 Thickness

The average thickness of sheath, determined by the method specified in AS/NZS 1660.2.1,

shall be not less than the thickness (ts) specified in Table 1 and the minimum thickness at

any point shall not fall below the specified thickness by more than 15 percent of the

specified thickness plus 0.1 mm, i.e.

minimum thickness = (0.85ts - 0.1 mm)

14.4 Criteria

The sheath taken from the finished cable, when subjected to the tests set out in Table 2,

shall comply with the requirements specified in Table 2.

14.5 Tests

The tests shall be made as set down in Table 2. The category of each test shall be as

specified in Table 2.

14.6 Spark test

The sheath shall be subjected to a spark test, normally during manufacture, in accordance

with Table 2, Test 6(c).

AS/NZS 3599.1:2003 10

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15 PHASE IDENTIFICATION

15.1 Identification of cores

Identification of cores shall comply with AS/NZS 1429.1.

15.2 Identification on sheath

In addition to the identification of cores, the sheath of each phase cable shall be marked

with phase numbers matching those of the cores. The numbers may be embossed, or printed

legibly, in a colour contrasting with that of the sheath surface, at intervals not exceeding

500 mm. The height of the individual characters shall be not less than 3 mm.

There shall be no indented marking on the sheath.

Where the cores are identified by coloured stripes or strips, the corresponding numerals

shall be 1, 2 and 3 for colours red, white and blue respectively.

16 CABLE IDENTIFICATION

The cable identification shall comprise embossing of the sheath(s) or the use of non-

hygroscopic tape(s), inserted throughout the length, under the sheath of one or more of the

phase cables. The information embossed on the sheath(s) or printed on the tape(s) shall

include the following:

Cable designated voltage Legend to be marked

6.35/11 (12) kV ELECTRIC CABLE 6.35/11 kV

12.7/22 (24) kV ELECTRIC CABLE 12.7/22 kV

In the case of embossing, the letters and figures shall comprise upright block characters

arranged along two approximately diametrically opposed lines, except that in the case of

phase cables with a diameter less than or equal to 30 mm one line of characters is

acceptable. The height of the characters shall be not less than 15% of the nominal diameter

of the phase cable, but in no case shall it be less than 3 mm nor greater than 13 mm. The

gap between one set of characters and the beginning of the next shall be not greater than

500 mm.

17 METRE MARKING

One phase core in each cable length shall be sequentially marked, numerically, at 1 m

intervals. The metre marking shall be limited to six digits and any drum length may start at

any integral number.

The cable shall be wound on the drum with the lowest number at the drum barrel (cable

inner) end.

NOTE: The metre marking, although adequate for establishing the approximate length of cable

left on the drum following earlier use (cutting) of part of the drum length, should not be relied on

for establishing the precise length left.

18 SUPPORT WIRE

The support wire shall comprise bare stranded galvanized steel wires complying with the

requirements of AS 1222.1. The size of the wire shall be as specified in Table 1.

For use in corrosive environments, the support wire shall consist of aluminium-clad steel

wires in accordance with AS 1222.2, in which case the size of the wire shall be selected

from the sizes listed in AS 1222.2 (see Appendices A and B)

The Standard is downloaded from www.bzfxw.com Standard Sharing

11

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AS/NZS 3599.1:2003

AS/NZS 3599.1:2003 12

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19 LAYING UP

The three phase cables shall be laid up around the support wire, with a length of lay not less

than 22 times nor more than 25 times the overall diameter of the circumscribing circle (see

Note) over the laid up bundled cable. The direction of lay shall be right-hand.

NOTE: The circumscribing circle diameter (C) is derived from the equation:

C = 2D + ds

where

D = the diameter of one phase cable

ds = the diameter of the support wire

20 PREPARATION FOR DELIVERY

The bundled cable shall be wound onto timber drums manufactured in accordance with

AS/NZS 2857 or steel drums manufactured in accordance with AS 3983.

The drums shall be suitable for outdoor storage (see Appendix B).

Every drum length of cable shall meet the following requirements:

(a) Both ends of each phase cable shall be sealed to prevent the ingress of water. (See

Appendix B).

(b) Both ends of the cable shall be fitted with a temporary binder to prevent the phase

cables separating.

(c) One end of the bundled cable shall be coloured red and the other shall be coloured

green. When facing the cable end, the end at which the rotational sequence of the

phase cables (Nos 1, 2, 3) is clockwise shall be coloured red and the other end shall

be coloured green.

The temporary binder (see Item (b)) may be coloured to satisfy this requirement.

(d) The bundled cable shall be wound on the drum so that the red end is at the drum

barrel and at least 0.2 m of phase cable and not less than 0.5 m of support wire, at the

inner end, shall protrude and be anchored to the drum.

(e) Cable drums shall be lagged to protect the cable from damage. The end of the cable

projecting from the drum barrel shall also be protected.

21 MARKING OF DRUMS

Every drum of cable shall be branded or labelled on the outside of the flange giving the

following information:

(a) A manufacturer’s traceability number preceded by the words “DRUM No.”.

(b) A registered name or registered mark, which enables the manufacturer or supplier of

the cable to be identified.

(c) The rated operating voltage expressed in the form U0/U followed by the legend ‘ABC

to AS/NZS 3599.1’.

(d) The conductor and metallic screen size per phase cable in square millimetres.

(e) Length of cable and start and finish length markings.

(f) The gross mass of the drum and cable.

(g) An arrow to indicate the recommended direction for rotation of the drum.

NOTE: Manufacturers making a statement of compliance with this Australian/New Zealand

Standard on a product, packaging or promotional material related to that product are advised to

ensure that such compliance is capable of being verified.


13 AS/NZS 3599.1:2003

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22 TESTS

22.1 General

The completed bundled cable shall comply with the tests specified in Clause 22.

The tests, pass criteria, category and reference for test method for cables manufactured to

this Standard are given in Table 2 (see Clause 3 for definitions of ‘type’, ‘routine’ and

‘sample’ tests).

A type test includes all tests specified in Table 2, including the routine and sample tests.

The results of the tests shall be recorded and shall be available in the form of a test report.

A type test on any 12.7/22 kV cable will qualify all 6.35/11 kV cables.

A type test on a cable of conductor size and stated voltage rating will qualify all cables of

conductor sizes equal to and above for that voltage rating (see Appendix B).

The frequency of sample tests is given in Clause 22.2 (see Appendix B).

Type tests performed on cables to AS/NZS 1429.1 shall be considered as evidence of

compliance with Tests 1 to 7.

22.2 Selection of samples

Where a full type test to this Standard is to be performed, type tests 7(d), (e), (f), (g), (h)

and (i) of Table 2 shall be carried out sequentially on the one sample of completed cable

10 m to 15 m in length. A new sample may be taken and submitted to test 7(i) provided that

it is first subjected to tests 7(d) and (g).

Samples for sample tests shall be taken from bundled cables, manufactured for any contract

where the total length exceeds 2 km, on the following basis:

(a) One sample for cables >2 ≤10 kilometres.

(b) Two samples for cables >10 ≤20 kilometres.

(c) One additional sample for each successive 10 kilometres of cable.

Should any sample fail in any of the sample tests, two further samples shall be taken from

the same batch and subjected to the test or tests in which the original sample failed. Should

both additional test samples pass the test or tests, all the drum lengths in the batch from

which they were taken should be regarded as complying with the requirements of this

Standard. Should either of them fail, the batch of which these samples were representative

should be regarded as failing to comply (see Appendix B).

AS/NZS 3599.1:2003 14

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TABLE 2

SCHEDULE OF TESTS

Test Pass criteria Category

of test

Reference

for test method

1. Conductor

All appropriate tests on conductors taken

from the completed cable

As specified in AS/NZS 1125 for the appropriate conductor with the

conductor resistance test performed as a Routine Test

2. Conductor screen

All appropriate tests on the conductor

screen

As specified in AS/NZS 1429.1

3. Insulation

All appropriate tests on the insulation

taken from the completed cable


4. Insulation screen

All appropriate tests on the insulation

screen


5. Metallic screen

All appropriate tests on the metallic

screen


6. Sheath

(a) All appropriate tests on the sheath

taken from the completed cable

As specified in AS/NZS 3808

(b) Thickness As specified in Clause 14 and

Table 1

Sample AS/NZS 1660.2.1

(c) Spark test No breakdown Routine AS/NZS 1660.3,

as for insulation

7. Cable

(a) Partial discharge test As specified in AS/NZS 1429.1 Routine AS/NZS 1429.1

(b) High voltage test for 5 min No breakdown Routine AS/NZS 1429.1

(c) Bending test followed by partial

discharge test, performed on one

phase core taken from the finished

cable

The requirements as for test 9(a)

shall apply

Type AS/NZS 1429.1

(d) DDF (tan δ) measurement at elevated

temperature

Maximum tan δ at 95 + 5, −0°C;

80 × 10−4

Type AS/NZS 1660.3

(e) Heat cycling test followed by partial

discharge test

The requirements as for test 9(a)

shall apply

Type AS/NZS 1429.1

(f) Impulse withstand test followed by a

high voltage test

No breakdown Type AS/NZS 1429.1

(g) High voltage a.c. test for 4 h No breakdown Type AS/NZS 1429.1

(h) Water-penetration test (applicable

only to cables incorporating water-

blocking measures)

There shall be no evidence of water

leakage at the cable ends

Type AS/NZS 1429.1

(i) Compatibility test after ageing in an

air oven for insulation and sheath

Type AS/NZS 1660.2.2

Duration: 240 h

Temperature: 100 ±2°C

(continued)


15 AS/NZS 3599.1:2003

COPYRIGHT

Test Pass criteria Category

of test

Reference

for test method

(i) Tensile strength, minimum, for

each material (percentage of

value found in unaged specimen)

75%

(ii) Elongation at rupture, minimum,

for each material (percentage of

value found in unaged specimen)

65%

8. Support wire

Tests on wire samples—

(a) Galvanizing test In accordance with AS 1221.1 Sample AS 1222.1

or

(b) Tensile test In accordance with AS 1222.1 and

AS 1222.2

Sample AS 1222.2

as

(c) Torsion or elongation test In accordance with AS 1222.1 and

AS 1222.2

Sample appropriate

(d) Wrapping test In accordance with AS 1222.1 and

AS 1222.2

Sample

(e) Dimensional test In accordance with AS 1222.1 and

AS 1222.2

Routine

TABLE 2 (continued)

AS/NZS 3599.1:2003 16

COPYRIGHT

APPENDIX A

CABLE DATA AND RECOMMENDATIONS

(Informative)

A1 SCOPE

This Appendix provides tabulated data and recommendations additional to that earlier

specified in this Standard, and is given primarily to assist in the selection of the appropriate

cable.

A2 MAXIMUM CONDUCTOR TEMPERATURE

The value of 90°C specified in Tables A1 and A2 is based on consideration of performance

of fittings and strength of conductors.

A3 CURRENT CARRYING CAPACITY

The values in Tables A1 and A2 for typical Australian installation conditions are for a 40°C

ambient air temperature as specified in AS/NZS 3008.1.1. For typical New Zealand

installation conditions an ambient air temperature of 30°C is applied as specified in

AS/NZS 3008.1.2. In each case, a wind speed of 1 m/s normal to the axis of the cable and a

solar radiation of 1000 W/m2 applies.

A4 RECOMMENDED SIZE FOR METALLIC SCREEN

When calculated by the adiabatic method, set out in IEC 60986 to ensure that under fault

conditions the transient temperature of the screen does not exceed 250°C based on an initial

temperature of 80°C, the recommended metallic screen dimensions are as given in

Table A3.

A5 EVERYDAY TENSION AND MAXIMUM WORKING TENSION

The everyday tension (EDT), also referred to as ‘sustained load’, is the long-term average

tension in the support wire. For design purposes it is usual to use a tension at a reference

temperature with no transverse wind pressure. In Australia the temperature normally used is

15°C. Other conditions may be used in special circumstances.

The maximum working tension (MWT) is the maximum short-term tension in the support

wire. For design purposes it is usual to calculate tension at a reference temperature with

transverse wind pressure and where applicable to calculate tension at a low temperature

with no transverse wind.

There are many criteria used to allow for the various climatic conditions experienced in

parts of Australia such as cyclonic winds and ice loadings.

Further information about the design of overhead lines is given in ESAA HB C(b)1.

The EDT and MWT should not exceed the values given in Table A4.

No mechanical tension should be imparted to the phase cables.


17 AS/NZS 3599.1:2003

COPYRIGHT

A6 SELECTION OF SUPPORT WIRE

A6.1 Use of 7/2.00 mm wire

The preferred support wire size is 19/2.00 mm in accordance with AS 1222.1. However, the

smaller size of 7/2.00 mm may be used with a 35 mm2 aerial bundled cable at the discretion

of the user where the lower strength wire is sufficient for the application.

A6.2 Use of aluminium-clad wire

In a corrosive environment, e.g. close to the sea coast, a support wire of aluminium-clad

steel in accordance with AS 1222.2 should be used.

Users should select a support wire that will provide sufficient mechanical strength for the

application, from the sizes given in AS 1222.2.

COPYRIGHT

18

TA

BL

E

A1

6.3

5/1

1 (

12

) k

V A

ER

IAL

BU

ND

LE

D C

AB

LE

S

Ref .

no

C

ha

ra

cte

ris

tic

Un

it

Ca

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r r

eco

mm

en

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va

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as

ap

pro

pria

te *

1

No

min

al

are

a o

f co

nd

ucto

r m

m2

35

5

0

70

9

5

12

0

15

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18

5

Su

pp

ort

wir

e

siz

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mm

) †

19

/2.0

0

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.00

2

Max

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m a

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ce o

f co

nd

ucto

r in

cab

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t 9

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Ω

/km

1

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1

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0

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2

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68

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1

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25

0

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5

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11

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Po

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eq

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f cab

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0 H

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m

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58

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Fo

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am

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ture

(b)

Fo

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am

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tem

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A

15

5

18

5

15

5

18

5

18

5

21

0

23

0

26

0

28

0

31

5

32

5

36

5

37

0

41

5

42

5

47

5

5

Ap

pro

xim

ate

mass

of

cab

le

kg

/km

2

37

0

20

70

2

85

0

34

80

4

04

0

43

30

4

72

0

50

70

6

Ph

ase

cab

le d

iam

ete

r (n

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m

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24

2

4

25

2

7

29

3

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3

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iam

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ircu

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cir

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m

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5

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6

6

69

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7

8

(b

) A

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† S

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ph

A6

.1.

18

AS/NZS 3599.1:2003


COPYRIGHT

19 AS/NZS 3599.1:2003

TA

BL

E

A2

12

.7/2

2 (

24

) k

V A

ER

IAL

BU

ND

LE

D C

AB

LE

S

Ref.

no

C

ha

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ris

tic

Un

it

Ca

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as

ap

pro

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te*

1

No

min

al

are

a o

f co

nd

ucto

r m

m2

35

5

0

70

9

5

12

0

15

0

18

5

Su

pp

ort

wir

e

siz

e (

mm

) †

19

/2.0

0

7/2

.00

2

Max

imu

m a

.c.

resi

stan

ce o

f co

nd

ucto

r in

cab

le a

t 9

0°C

Ω

/km

1

.11

1

.11

0

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2

0.5

68

0

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1

0.3

25

0

.26

5

0.2

11

3

Po

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ve s

eq

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f cab

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t 5

0 H

z

Ω/k

m

0.1

66

0

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9

0.1

59

0

.14

8

0.1

40

0

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5

0.1

31

0

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6

4

Max

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m c

on

tin

uo

us

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yin

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ap

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(se

e P

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A3

)

(a)

Fo

r a 4

0°C

am

bie

nt

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tem

pera

ture

(b)

Fo

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am

bie

nt

air

tem

pera

ture

A

15

0

17

0

15

0

17

0

18

5

20

5

23

0

26

0

28

0

31

5

32

0

36

0

36

5

41

0

41

5

47

0

5

Ap

pro

xim

ate

mass

of

cab

le

kg

/km

2

82

0

25

30

3

32

0

40

40

4

65

0

50

00

5

42

0

58

40

6

Ph

ase

cab

le d

iam

ete

r (n

om

inal)

m

m

28

2

8

29

3

2

33

3

5

37

3

9

7

Bu

nd

led

cab

le d

iam

ete

r (n

om

inal)

(a

) C

ircu

msc

rib

ing

cir

cle

m

m

67

6

3

71

7

5

78

8

1

85

8

8

(b

) A

pp

rox

imate

pro

jecte

d d

iam

ete

r, f

or

calc

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tin

g w

ind

lo

ad

m

m

62

6

0

66

7

0

73

7

6

80

8

3

* C

on

du

cto

r si

zes

sho

wn

in

bo

ld t

yp

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re p

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† S

ee T

ab

le 1

an

d P

ara

gra

ph

A6

.1.

AS/NZS 3599.1:2003 20

COPYRIGHT

TABLE A3

RECOMMENDED NUMBER AND NOMINAL DIAMETER* OF COPPER SCREEN

WIRES PER PHASE CABLE AND TOTAL CROSS-SECTIONAL AREAS

Short circuit conditions

2 kA for 1 s

Short circuit conditions

8 kA for 1 s Phase conductor

cross-sectional

area mm2

No/mm

Total screen cross

sectional area

mm2

No/mm

Total screen cross-

sectional area

mm2

35 24/0.85 40/0.85† 23

50 24/0.85 23/1.35 33

70 24/0.85 32/1.35† 46

95 24/0.85* 38/1.35 54

120 24/0.85* 38/1.35 54

150 24/0.85* 38/1.35 54

185 24/0.85*

14

38/1.35 54

* In certain cases, particularly for cables having conductors of 95 mm2 or larger, and having a 2 kA short

circuit rating, a larger number of wires may be required to achieve the required screen coverage.

† The short circuit current rating is limited by the short circuit current rating of the conductor.

TABLE A4

MECHANICAL CHARACTERISTICS OF SUPPORT WIRE

Calculated or recommended values,

as appropriate Reference

noCharacteristic Unit

7/2.00 mm 19/2.00 mm

1 Minimum breaking

load

kN 26.0 70.5

2 Modulus of elasticity GPa 170 166

3 Coefficient of linear

expansion

K-1 11.5 × 10−6 11.5 × 10−6

4 Highest values for

maximum working

tension (50% MBL)*

kN 13.0 35.3

5 Highest values for

everyday tension

(25% MBL)

kN 6.5 17.6

* In most installations lower values will be used.


21 AS/NZS 3599.1:2003

COPYRIGHT

APPENDIX B

PURCHASING GUIDELINES

(Informative)

B1 GENERAL

Australian/New Zealand Standards are intended to include the technical requirements for

relevant products, but do not purport to comprise all the necessary provisions of a contract.

This Appendix contains advice and recommendations on the information to be supplied by

the purchaser at the time of enquiry or order.

B2 INFORMATION TO BE SPECIFIED BY THE PURCHASER

The purchaser should supply the following information at the time of enquiry and order,

after making due reference to the explanation, advice and recommendations contained in

this Appendix:

(a) The number of this Standard, i.e. AS/NZS 3599.1.

(b) Cable rated voltage.

(c) Conductor size, i.e. nominal cross-sectional area.

(d) The screen electrical requirements (see Clause 11).

(e) Choice of support wire, size and type (see Clause 18)

(f) Where water-blocking of metallic screen is required (see Clause 12).

(g) The cable length and individual drum lengths required.

B3 ITEMS SUBJECT TO AGREEMENT BETWEEN PURCHASER AND

MANUFACTURER

The following items are subject to agreement between the purchaser and manufacturer:

(a) For water-blocking cables, the method of water-blocking if other than by tapes (see

Clause 12).

(b) Type of drum to be used, where specific drum requirements apply, and cable

protection measures, i.e. wrapping or lagging (see Clause 20).

(c) Method for sealing ends of cable against ingress of water during storage, delivery and

while awaiting installation.

(d) Whether a type test report is required.

AS/NZS 3599.1:2003 22

COPYRIGHT

APPENDIX C

DIAMETER OF DRUM BARRELS AND INSTALLATION BENDING

RADII FOR CABLES

(Informative)

C1 DIAMETER OF DRUM BARRELS

The recommended minimum diameter of a drum barrel is determined by reference to the

overall diameter of the circumscribing circle over the bundled cable (see Clause 19)

multiplied by the factor specified in Table C1.

C2 INSTALLATION BENDING RADII

The recommended minimum installation bending radii for cable is determined by reference

to the overall diameter of the circumscribing circle over the bundled cable (see Clause 19)

or the phase cable, as appropriate, multiplied by the appropriate factor specified in

Table C1.

TABLE C1

RECOMMENDED DIAMETER OF DRUM BARREL AND INSTALLATION

BENDING RADII

Multiplying factor

Installation bending radii

Phase cable or

bundled cable Diameter

of drum

barrelDuring

installation

Installed

(a) Bundled cable 12 15 10

(b) Phase cable — 25 15


23 AS/NZS 3599.1:2003

NOTES

AS/NZS 3599.1:2003 24

NOTES


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