AS 1747-1993

1 - AS 1747-1993 REELING, TRAILING AND FEEDER CABLES USED FOR MINING - REPAIR AND TESTING
4 - PREFACE
5 - CONTENTS
7 - FOREWORD
8 - SECTION 1 SCOPE AND GENERAL
8 - 1.1 SCOPE
8 - 1.2 REFERENCED DOCUMENTS
9 - 1.3 DEFINITIONS
9 - 1.3.1 Bunch
9 - 1.3.2 Cable coupling device
9 - 1.3.3 Cable repair facility
9 - 1.3.4 Cable repairer
9 - 1.3.5 Centre filler
9 - 1.3.6 Collectively screened cable
9 - 1.3.7 Composite screen
9 - 1.3.8 Conductor screen
9 - 1.3.9 Covered conductor
9 - 1.3.10 Cradle separator
9 - 1.3.11 Direction of lay
10 - 1.3.12 Earth conductor
10 - 1.3.13 Feeder cable
10 - 1.3.14 Ferrule
10 - 1.3.15 History record
10 - 1.3.16 Individually screened cable
10 - 1.3.17 Insulation screen
10 - 1.3.18 Length of lay
10 - 1.3.19 Multiple (or rope) strand
10 - 1.3.20 Partial break detection device
10 - 1.3.21 Pilot core
10 - 1.3.22 Power core
10 - 1.3.23 Reeling and trailing cable
10 - 1.3.24 Restrained plug
10 - 1.3.25 Restrained receptacle
10 - 1.3.26 Semiconductive elastomer
10 - 1.3.27 Sheath
10 - 1.3.28 Spark test
10 - 1.3.29 Vulcanizer
11 - SECTION 2 EVALUATION BEFORE REPAIR AND HISTORY RECORD
11 - 2.1 REQUIREMENTS
11 - 2.2 HISTORY RECORD
11 - 2.3 DETAILS OF CABLE TO BE RECORDED
11 - 2.4 VISUAL EXAMINATION
11 - 2.5 PRE-REPAIR TESTS
11 - 2.6 PRACTICABILITY OF REPAIR
12 - SECTION 3 REPAIR PROCEDURES FOR CABLES
12 - 3.1 COMPATIBILITY OF CABLES TO BE JOINED
12 - 3.2 USE OF CLEANING SOLVENTS
12 - 3.3 JOINING BY FERRULES
12 - 3.3.1 Ferrules
12 - 3.3.2 Solder and flux
12 - 3.3.3 Technique
12 - 3.4 JOINING BY WELDING OR SOLDERING
12 - 3.5 JOINING PILOT CONDUCTOR (all types of cable)
12 - 3.5.1 Central (extensible) pilot conductor
12 - 3.5.2 Interstitial pilot conductors
12 - 3.6 JOINING POWER CONDUCTORS OF ALL REELING AND TRAILING CABLES
12 - 3.6.1 Power conductors having less than 19 bunches
13 - 3.6.2 Power conductors having 19 or more bunches
17 - 3.7 JOINING POWER CONDUCTORS OF FEEDER CABLES
17 - 3.8 JOINING EARTH CONDUCTORS (EXCLUDING EARTH SCREENS)
17 - 3.9 REPLACEMENT OF INSULATION OR COVERING OVER CONDUCTORS
22 - 3.10 JOINING INDIVIDUAL METALLIC OR COMPOSITE EARTH SCREENS
22 - 3.10.1 General
22 - 3.10.2 Repair of screen by ferrules
24 - 3.10.3 Repair of screen without ferrules
24 - 3.11 REPLACEMENT OF SEMICONDUCTIVE ELASTOMERS
24 - 3.12 LAY-UP OF CORE ASSEMBLY
24 - 3.13 REPAIR OF INNER SHEATH
24 - 3.14 JOINING PLIABLE ARMOUR
26 - 3.15 REPLACEMENT OF SHEATH (inner or outer sheath)
29 - 3.16 VULCANIZING
31 - SECTION 4 REPAIR OF PLUGS
31 - 4.1 EXAMINATION
31 - 4.2 PLUG REPLACEMENT
31 - 4.2.1 General
31 - 4.2.2 Power cores
31 - 4.2.3 Earth screens and conductors
32 - 4.2.4 Pilot cores
32 - 4.2.5 Sheath protrusion and clamping
32 - 4.3 COMPOUNDS
32 - 4.4 FLAMEPROOFING
33 - SECTION 5 TESTING
33 - 5.1 GENERAL
33 - 5.2 TEST EQUIPMENT
33 - 5.3 HIGH VOLTAGE FAULT LOCATION TEST
33 - 5.3.1 General
33 - 5.3.2 Equipment
33 - 5.3.3 Application of voltage
33 - 5.3.4 Authorization to exceed appropriate voltage pulse and number of pulses given in Table 5.1
33 - 5.4 HIGH VOLTAGE PROOF TEST
34 - 5.5 CONTINUITY AND PHASE ROTATION TESTS
34 - 5.6 PARTIAL BREAK TEST
34 - 5.7 SYMMETRICAL LOAD TEST
35 - 5.8 TESTS FOR INTEGRITY OF OUTER SHEATH
35 - 5.8.1 General
35 - 5.8.2 Spark test
35 - 5.9 INSULATION RESISTANCE TEST
36 - 5.10 SHEATH HARDNESS
37 - SECTION 6 IDENTIFICATION OF REPAIRS
37 - 6.1 METHOD OF MARKING
37 - 6.2 INFORMATION TO BE MARKED
38 - APPENDIX A - TYPICAL CABLE HISTORY RECORD
39 - APPENDIX B - REQUIREMENTS FOR FERRULES
39 - B1 CONSTRUCTION
39 - B2 LENGTH
39 - B3 INTERNAL CROSS-SECTIONAL DIMENSION
39 - B4 WALL THICKNESS
40 - APPENDIX C - REQUIREMENTS FOR SOLDER AND FLUX
40 - C1 SOLDER
40 - C2 FLUX
41 - APPENDIX D - REPAIR MATERIALS AND TAPES
41 - D1 INSULATION OR COVERING
41 - D1.1 Type
41 - D1.2 Tape over insulation
41 - D2 SEMICONDUCTIVE ELASTOMER CORE SCREENS AND SHEATH COMPONENT
41 - D3 BINDER TAPES USED FOR SHEATH REPAIR
41 - D4 SHEATH MATERIAL
42 - D5 VULCANIZING CONDITIONS FOR INSULATION AND SHEATHS
43 - D6 STORAGE OF REPAIR TAPES
43 - D7 INCOMPATIBLE MATERIALS
44 - APPENDIX E - REQUIREMENTS FOR TEST EQUIPMENT
44 - E1 HIGH VOLTAGE PROOF TEST UNIT
44 - E2 OHMIC RESISTANCE AND CONTINUITY TEST UNIT
44 - E3 PARTIAL BREAK TEST UNIT
44 - E4 SPARK TEST UNIT FOR TESTING THE INTEGRITY OF SHEATH
44 - E5 INSULATION TESTING UNIT
44 - E6 SHEATH HARDNESS TEST UNIT
44 - E7 SYMMETRICAL LOAD TEST
46 - APPENDIX F - ROUTINE TESTS ON TEST EQUIPMENT
46 - F1 ORGANIZATION TO UNDERTAKE TESTS
46 - F2 HIGH VOLTAGE PROOF TEST UNIT
46 - F3 HIGH VOLTAGE FAULT LOCATION TEST UNIT
46 - F4 CONTINUITY TEST UNIT
46 - F5 PARTIAL BREAK TEST UNIT
46 - F6 SPARK TEST UNIT FOR TESTING INTEGRITY OF SHEATH
46 - F7 INSULATION TEST UNIT
46 - F8 SHEATH HARDNESS TEST UNIT
46 - F9 SYMMETRICAL LOAD TEST UNIT
47 - APPENDIX G - COMBINED RESISTANCE OF EARTH CONDUCTORS FOR TYPES 275, 280A AND 280B CABLES
47 - G1 SCOPE

Specifies requirements for the repair and testing of cables used in underground coal mines, metalliferous mines, open-cut mines, quarries and dredges.

This Standard sets out requirements for the repair and testing of cables used in underground coal mines. The requirements of this Standard may apply also to the repair of cables used elsewhere, e.g. metalliferous mines, open cut mines, quarries and dredges.The Standard establishes sound practice for the repair and testing of-(a) reeling and trailing cables used for underground coal mines, metalliferous mines, open-cut mines, quarries and dredges; and(b) feeder cables used for underground coal mines and having insulation and sheath of elastomer.Except for pliable armour, the Standard limits repairs to the use of soldered connections only.The Standard also details the repair of plugs fitted to the cables and to the test equipment used for testing cables.Note: The Standard applies particularly to reeling and trailing cables complying with AS 1802, AS 2802 and the former AS C81, and to feeder cables complying with AS 1972 and the former AS C412, but is not restricted in application to such cables.Where type or code numbers are referred to in the Standard for trailing cables, the numbers are as specified in AS 1802, AS 2802 and the former AS C81.

Under Revision see DR 02288 First published as AS 1747-1975.Second edition 1980.Third edition 1989.Fourth edition 1993. First published as AS 1747-1975. Second edition 1980. Third edition 1989. Fourth edition 1993.