AS/NZS 1747:2022
Reeling, trailing and feeder cables used for mining – Repair, testing and fitting of accessories
AS/NZS 1747 sets out requirements for the repair and testing of reeling, trailing and feeder cables used in underground coal mines, metalliferous mines, open cut mines, tunnelling, quarries and dredges.
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AS/NZS 1747:2022 Repair, testing and fitting of accessories
Preface
Section 1 Scope and general
1.1 Scope
1.2 Normative references
1.3 Terms and definitions
Section 2 Evaluation before repair and history record
2.1 Requirements
2.2 History record
2.3 Visual examination
2.4 Pre-repair tests
2.5 Inspection of cable accessories
2.6 Practicability of repair
Section 3 Repair procedures for cables
3.1 Compatibility of cables to be joined
3.2 Use of cleaning solvents
3.3 Joining by ferrules
3.3.1 Ferrules
3.3.2 Solder and flux
3.3.3 Technique
3.4 Joining by exothermic welding
3.5 Joining by hard soldering
3.6 Joining pilot and control conductors (for reeling cables)
3.6.1 Single central (extensible) pilot conductors
3.6.2 Multiple central pilot conductors
3.6.3 Interstitial pilot and control conductors
3.7 Joining pilot and control conductors (other than reeling cables)
3.8 Joining power conductors of all reeling and trailing cables
3.8.1 Power conductors having less than 19 bunches
3.8.2 Power conductors having 19 or more bunches
3.9 Joining power conductors of feeder cables
3.10 Joining earth conductors (excluding earth screens)
3.11 Joining of PILSWA and XPLE armoured cables
3.12 Replacement of insulation or covering over conductors
3.13 Joining individual metallic or composite earth screens
3.13.1 General
3.13.2 Repair of screen by ferrules
3.13.3 Repair of metallic screen without ferrules
3.14 Replacement of semiconductive elastomers
3.15 Lay-up of core assembly
3.16 Repair of inner sheath
3.17 Joining pliable armour
3.18 Replacement of sheath (inner and outer sheath)
3.19 Replacement of outer rubber sheath only (surface cables only)
3.20 Replacement/repair of PVC outer sheath (steel wire armoured cables)
3.20.1 General
3.20.2 Use of repair tape
3.20.3 Plastic weld repair
3.21 Vulcanizing
Section 4 Inspection, fitting and replacement of plugs, couplers and other cable accessories
4.1 General
4.2 Plug inspection external
4.3 Plug inspection internal
4.4 Flamepath inspection
4.5 Tail inspection
4.5.1 Cables fitted with tails
4.6 Plug fitting
4.6.1 General
4.6.2 Power cores
4.6.3 Earth screens and conductors
4.6.4 Pilot cores
4.6.5 Sheath protrusion and clamping
4.7 Compounds
Section 5 Testing
5.1 General
5.2 HV connections
5.3 Discharge times
5.4 Test equipment
5.5 Tests to be carried out
5.5.1 Underground mining cables
5.5.2 XLPE and paper lead cables
5.5.3 Surface mining cables
5.5.4 Fitting accessories to cables
5.6 High voltage fault location test
5.6.1 General
5.6.2 Equipment
5.6.3 Application of fault location test
5.6.4 Authorization to exceed appropriate voltage pulse
5.7 Continuity and phase rotation tests
5.8 Insulation resistance test
5.8.1 General
5.8.2 Testing of power conductors
5.8.3 Testing of pilot/control conductors
5.8.4 Requirements
5.9 High voltage proof test
5.9.1 Power conductors
5.9.2 Pilot/control conductors
5.10 Symmetrical load test
5.11 Partial break test
5.12 Tests for integrity of outer sheath
5.12.1 General
5.12.2 Sheath test (underground mining cables)
5.12.3 Sheath visual inspection (surface mining cables) and armoured or PVC sheathed cables
5.13 Sheath hardness
Section 6 Identification of repairs
6.1 Method of marking
6.2 Information to be marked
Section 7 Responsible person
Appendix A (informative) Computer database cable history information
Appendix B (normative) Requirements for ferrules
Appendix C (normative) Requirements for solder and flux
Appendix D (informative) Procedure for exothermic welding)
Appendix E (informative) A procedure for hard soldering
Appendix F (normative) Repair materials and tapes
Appendix G (informative) Assessing cable condition
Appendix H (normative) Requirements for test equipment
Appendix I (normative) Routine tests on test equipment
Appendix J (normative) Routine tests on measuring equipment
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References
Electrical equipment for mines and quarries - Explosion-protected three-phase restrained plugs and receptacles for working voltages up to and including 3.3 kV
Electrical equipment for mines and quarries - Bolted explosion-protected three-phase cable coupling devices
Electric cables - Reeling and trailing - For underground coal mining
Electric cables - Underground coal mines - Other than reeling and trailing
Electric cables - Reeling and trailing for mining and general use (other than underground coal mining)
Explosive atmospheres - Part 7: Equipment protection by increased safety ‘e’
Related Information
Similar Standards
-
AS/NZS 1026:2004
Electric cables - Impregnated paper insulated - For working voltages up to and including 19/33 (36) kV
-
AS/NZS 1429.1:2006
Electric cables - Polymeric insulated - For working voltages 1.9/3.3 (3.6) kV up to and including 19/33 (36) kV
-
AS/NZS 1802:2018
Electric cables - Reeling and trailing - For underground coal mining -
AS/NZS 1972:2006
Electric cables - Underground coal mines - Other than reeling and trailing
AS/NZS 1747:2022 Repair, testing and fitting of accessories
Preface
Section 1 Scope and general
1.1 Scope
1.2 Normative references
1.3 Terms and definitions
Section 2 Evaluation before repair and history record
2.1 Requirements
2.2 History record
2.3 Visual examination
2.4 Pre-repair tests
2.5 Inspection of cable accessories
2.6 Practicability of repair
Section 3 Repair procedures for cables
3.1 Compatibility of cables to be joined
3.2 Use of cleaning solvents
3.3 Joining by ferrules
3.3.1 Ferrules
3.3.2 Solder and flux
3.3.3 Technique
3.4 Joining by exothermic welding
3.5 Joining by hard soldering
3.6 Joining pilot and control conductors (for reeling cables)
3.6.1 Single central (extensible) pilot conductors
3.6.2 Multiple central pilot conductors
3.6.3 Interstitial pilot and control conductors
3.7 Joining pilot and control conductors (other than reeling cables)
3.8 Joining power conductors of all reeling and trailing cables
3.8.1 Power conductors having less than 19 bunches
3.8.2 Power conductors having 19 or more bunches
3.9 Joining power conductors of feeder cables
3.10 Joining earth conductors (excluding earth screens)
3.11 Joining of PILSWA and XPLE armoured cables
3.12 Replacement of insulation or covering over conductors
3.13 Joining individual metallic or composite earth screens
3.13.1 General
3.13.2 Repair of screen by ferrules
3.13.3 Repair of metallic screen without ferrules
3.14 Replacement of semiconductive elastomers
3.15 Lay-up of core assembly
3.16 Repair of inner sheath
3.17 Joining pliable armour
3.18 Replacement of sheath (inner and outer sheath)
3.19 Replacement of outer rubber sheath only (surface cables only)
3.20 Replacement/repair of PVC outer sheath (steel wire armoured cables)
3.20.1 General
3.20.2 Use of repair tape
3.20.3 Plastic weld repair
3.21 Vulcanizing
Section 4 Inspection, fitting and replacement of plugs, couplers and other cable accessories
4.1 General
4.2 Plug inspection external
4.3 Plug inspection internal
4.4 Flamepath inspection
4.5 Tail inspection
4.5.1 Cables fitted with tails
4.6 Plug fitting
4.6.1 General
4.6.2 Power cores
4.6.3 Earth screens and conductors
4.6.4 Pilot cores
4.6.5 Sheath protrusion and clamping
4.7 Compounds
Section 5 Testing
5.1 General
5.2 HV connections
5.3 Discharge times
5.4 Test equipment
5.5 Tests to be carried out
5.5.1 Underground mining cables
5.5.2 XLPE and paper lead cables
5.5.3 Surface mining cables
5.5.4 Fitting accessories to cables
5.6 High voltage fault location test
5.6.1 General
5.6.2 Equipment
5.6.3 Application of fault location test
5.6.4 Authorization to exceed appropriate voltage pulse
5.7 Continuity and phase rotation tests
5.8 Insulation resistance test
5.8.1 General
5.8.2 Testing of power conductors
5.8.3 Testing of pilot/control conductors
5.8.4 Requirements
5.9 High voltage proof test
5.9.1 Power conductors
5.9.2 Pilot/control conductors
5.10 Symmetrical load test
5.11 Partial break test
5.12 Tests for integrity of outer sheath
5.12.1 General
5.12.2 Sheath test (underground mining cables)
5.12.3 Sheath visual inspection (surface mining cables) and armoured or PVC sheathed cables
5.13 Sheath hardness
Section 6 Identification of repairs
6.1 Method of marking
6.2 Information to be marked
Section 7 Responsible person
Appendix A (informative) Computer database cable history information
Appendix B (normative) Requirements for ferrules
Appendix C (normative) Requirements for solder and flux
Appendix D (informative) Procedure for exothermic welding)
Appendix E (informative) A procedure for hard soldering
Appendix F (normative) Repair materials and tapes
Appendix G (informative) Assessing cable condition
Appendix H (normative) Requirements for test equipment
Appendix I (normative) Routine tests on test equipment
Appendix J (normative) Routine tests on measuring equipment
Previous versions
AS/NZS 1747:2022
Online Library subscription pricing
The cost of your subscription will depend on which standards you want to access, and how many people in your organisation need to be able to access the Online Library subscription at the same time (concurrent users). During your subscription period, we are also able to make any necessary changes and ensure you are aware of any pricing changes that result. For a quote, contact our Online Library team by emailing onlinelibrary@standards.govt.nz.