AS 1026-1992

1 - AS 1026-1992 ELECTRIC CABLES - IMPREGNATED PAPER INSULATED - WORKING VOLTAGES UP TO AND INCLUDING 33 kV
4 - PREFACE
5 - CONTENTS
7 - 1 SCOPE
7 - 2 REFERENCED DOCUMENTS
7 - 3 DEFINITIONS
7 - 3.1 Core (of a cable)
7 - 3.2 Conductor screen
7 - 3.3 Screened cable
8 - 3.4 Multicore cable
8 - 3.5 Belted cable
8 - 3.6 Separately leaded (SL) cable
8 - 3.7 Direction of lay
8 - 3.8 Maximum permissible continuous conductor temperature
8 - 3.9 Voltage designation
8 - 3.10 Nominal values
8 - 3.11 Approximate value
8 - 3.12 Breaking joint
8 - 3.13 Registration
8 - 3.14 Non-hygroscopic
8 - 4 OPERATING VOLTAGES
8 - 5 MAXIMUM CONDUCTOR TEMPERATURES
8 - 6 CONDUCTORS
10 - 7 CONDUCTOR SCREEN
10 - 8 INSULATION
10 - 8.1 General
10 - 8.2 Material
10 - 8.3 Method of application
10 - 8.4 Thickness of paper
10 - 8.5 Thickness of insulation
10 - 9 CORE IDENTIFICATION
10 - 10 INSULATION SCREEN
10 - 10.1 General
10 - 10.2 Screen
10 - 10.3 Additional screening
10 - 11 LAYING UP
10 - 11.1 Belted cables
11 - 11.2 Screened cables
11 - 11.3 Screened SL cables
11 - 11.4 Direction of lay
11 - 12 IMPREGNATION
11 - 12.1 General
11 - 12.2 Compound test
11 - 12.3 Breaking load and elongation at break of impregnated paper
11 - 13 IDENTIFICATION OF MANUFACTURER
11 - 14 LEAD ALLOY SHEATH
11 - 14.1 General
11 - 14.2 Composition
11 - 14.3 Thickness
11 - 14.4 External coating
11 - 15 BEDDING
11 - 15.1 General
11 - 15.2 Lapped bedding
11 - 15.3 Extruded bedding
12 - 16 ARMOUR
12 - 16.1 General
12 - 16.2 Single-wire armour
12 - 16.3 Double-wire armour
12 - 17 NON-METALLIC SHEATH OR SERVING
12 - 17.1 Non-metallic sheath
12 - 17.2 Serving for armoured cables
12 - 18 COMPOUNDS FOR LAPPED BEDDING AND SERVING
12 - 19 CABLE MARKINGS
12 - 19.1 End markings
12 - 19.2 Identification of cables without non-metallic sheath
13 - 19.3 Embossing or indenting of non-metallic sheath
13 - 19.4 Metre marking on non-metallic sheath
13 - 20 SEALING AND PREPARATION FOR DELIVERY
13 - 20.1 General
13 - 21 TESTS
13 - 21.1 General
13 - 21.2 Test categories
13 - 21.3 Measurement of conductor resistance (RT)
13 - 21.4 Voltage tests (RT)
14 - 21.5 Dielectric dissipation factor/voltage test (RT)
15 - 21.6 Electrical tests on extruded non-metallic sheaths (RT)
15 - 21.7 Measurement of insulation thickness (ST)
16 - 21.8 Bending test (ST)
16 - 21.9 Drainage test (ST)
17 - 21.10 Residual compound congealing point test
17 - 21.11 Breaking load and elongation at break of impregnated paper (ST)
28 - APPENDIX A - RECOMMENDATIONS FOR THE SELECTION AND OPERATION OF PAPER-INSULATED CABLES
28 - A1 VOLTAGE RATINGS
28 - A1.1 Categories
28 - A1.2 Category 1
28 - A1.3 Category 2
28 - A2 PROTECTIVE COVERINGS
28 - A2.1 Non-metallic sheath
28 - A2.2 Flame-retardant coverings
28 - A3 PROTECTION AGAINST TERMITE OR ANT ATTACK
28 - A4 CURRENT RATINGS
28 - A5 SHORT CIRCUIT RATINGS
30 - APPENDIX B - RECOMMENDATIONS FOR THE INSTALLATION OF PAPER-INSULATED CABLES
30 - B1 MINIMUM TEMPERATURE DURING INSTALLATION
30 - B2 MINIMUM INSTALLATION RADIUS
30 - B3 TESTS AFTER INSTALLATION
32 - APPENDIX C - SPECIAL TEST SAMPLE SELECTION AND RETEST PROCEDURE
32 - C1 SELECTION OF SAMPLES
32 - C2 RE-TEST PROCEDURE
33 - APPENDIX D - TYPE TESTS FOR 19/33 kV CABLES
33 - D1 PRELIMINARY PROCEDURE
33 - D2 LOADING CYCLE TEST
33 - D2.1 Test installation
33 - D2.2 PROCEDURE
33 - D3 IMPULSE VOLTAGE TEST
33 - D3.1 Test installation
33 - D3.2 Principle
33 - D3.3 Detailed test method
35 - APPENDIX E - METHOD OF TEST FOR WATER-SOLUBLE IMPURITIES IN INSULATING PAPER
35 - APPENDIX F - INFORMATION REQUIRED WITH ENQUIRY AND ORDER
36 - APPENDIX G - DETERMINATION OF THICKNESS OF LEAD ALLOY SHEATH AND EXTRUDED BEDDING
36 - G1 GENERAL
36 - G2 METHOD OF MEASURING THICKNESS
36 - G2.1 Lead alloy sheath
36 - G2.2 Extruded bedding

Specifies the requirements for non-draining mass-impregnated paper insulated and lead alloy sheathed cables for working voltages up to and including 19/33 kV.

This Standard specifies requirements for non-draining mass-impregnated paper insulated and lead alloy sheathed cables for working voltages up to and including 19/33 kV. Provision is made for extruded or lapped non-metallic protective coverings over the lead alloy sheath, with or without galvanized steel wire armour. Some typical constructions are shown in Figure 1.NOTE: Recommendations for selection and operation are given in Appendix A and those for installation are given in Appendix B.The following cables are included in this Standard:(a) 0.6/1 kV single-core, two-core, three-core and four-core.(b) 1.9/3.3 kV and 3.8/6.6 kV single-core and three-core belted construction.(c) 6.35/11 and 11/11 kV single-core and three-core belted or screened construction.(d) 12.7/22 kV and 19/33 kV single-core and three-core screened or three-core separately leaded (SL).

First published as AS C92-1941.
Withdrawn 1970.
Revised and redesignated AS 1026-1973.
Second edition 1992.