1 - AS/NZS 4871.1:2002 ELECTRICAL EQUIPMENT FOR COAL MINES, FOR USE UNDERGROUND - GENERAL REQUIREMENTS
4 - PREFACE
5 - CONTENTS
6 - SECTION 1 SCOPE AND GENERAL
6 - 1.1 SCOPE
6 - 1.2 APPLICATION
6 - 1.3 SERVICE CONDITIONS
7 - 1.4 REFERENCED DOCUMENTS
8 - 1.5 DEFINITIONS
8 - 1.5.1 Access cover
8 - 1.5.2 Adaptor
8 - 1.5.3 Approved
8 - 1.5.4 Area, hazardous
8 - 1.5.5 Area, non-hazardous (safe)
8 - 1.5.6 Automatic circuit opening device
8 - 1.5.7 Automatic control
8 - 1.5.8 Cable attachments
9 - 1.5.9 Cable entry
9 - 1.5.10 Certifying authority
9 - 1.5.11 Circuit-breaker
9 - 1.5.12 Clearance
9 - 1.5.13 Conduit entry
9 - 1.5.14 Connection facilities
9 - 1.5.15 Contactor
9 - 1.5.16 Cover
9 - 1.5.17 Creepage distance
9 - 1.5.18 Dead front
9 - 1.5.19 Disconnector (Isolating switch)
9 - 1.5.20 Distribution, control box and auxiliary equipment
9 - 1.5.21 Earth-continuity protection
9 - 1.5.22 Earth-fault current limitation
9 - 1.5.23 Earth-fault lockout protection
10 - 1.5.24 Earth-fault protection
10 - 1.5.25 Electrical equipment
10 - 1.5.26 Electrical equipment for explosive gas atmospheres
10 - 1.5.27 Enclosure
10 - 1.5.28 Ex component
10 - 1.5.29 Explosion-protected
10 - 1.5.30 Explosion-protection
10 - 1.5.31 Explosive atmosphere
10 - 1.5.32 Fail-to-safety (fail-safe)
10 - 1.5.33 Fixed equipment
10 - 1.5.34 Flameproof enclosure
11 - 1.5.35 Flame resistant
11 - 1.5.36 Fuse, HRC
11 - 1.5.37 Ignition temperature
11 - 1.5.38 Interlocking device
11 - 1.5.39 Intrinsically safe circuit
11 - 1.5.40 Inverse time-delay overcurrent release
11 - 1.5.41 Local control
11 - 1.5.42 Maximum surface temperature
11 - 1.5.43 Mobile machine
11 - 1.5.44 Overcurrent and short-circuit protection
11 - 1.5.45 Overload protection
11 - 1.5.46 Pilot core
12 - 1.5.47 Portable equipment
12 - 1.5.48 Prospective peak current
12 - 1.5.49 Rated conditional short-circuit current
12 - 1.5.50 Rated peak withstand current
12 - 1.5.51 Rated prospective short-circuit current
12 - 1.5.52 Rated short-time withstand current
12 - 1.5.53 Rating
12 - 1.5.54 Regulatory authority
12 - 1.5.55 Relevant Standards
12 - 1.5.56 Remote control
12 - 1.5.57 Restrained plug and receptacle
12 - 1.5.58 Sensitive earth-fault protection
12 - 1.5.59 Sequence interlocking
12 - 1.5.60 Shunt release
13 - 1.5.61 Switching device
13 - 1.5.62 Temperature classification
13 - 1.5.63 Terminal compartment
13 - 1.5.64 Testing station
13 - 1.5.65 Transportable equipment
13 - 1.5.66 Transportable substation
13 - 1.5.67 Undervoltage release
13 - 1.5.68 Voltage
14 - SECTION 2 COMMON REQUIREMENTS
14 - 2.1 GENERAL
14 - 2.1.1 Safety appraisal
14 - 2.1.2 Supply system
14 - 2.1.3 System fault levels
14 - 2.1.4 Equipment selection
14 - 2.1.5 Temperature rating
15 - 2.1.6 Assembly
15 - 2.1.7 Construction
15 - 2.2 ENCLOSURE REQUIREMENTS
15 - 2.2.1 General
15 - 2.2.2 Internal segregation
15 - 2.2.3 Access
16 - 2.2.4 Withdrawable and plug-in equipment
16 - 2.2.5 Unused openings and threaded entries
16 - 2.2.6 Electric shock interlocking
17 - 2.3 COMPONENTS REQUIREMENTS
17 - 2.3.1 General
17 - 2.3.2 Switching devices
19 - 2.3.3 Transformers
20 - 2.3.4 Measuring instruments
20 - 2.3.5 Terminals
20 - 2.3.6 Cable attachments
20 - 2.3.7 Motors
20 - 2.3.8 Resistors
21 - 2.3.9 Electronic based systems
21 - 2.4 CONDUCTORS AND CABLING REQUIREMENTS
21 - 2.4.1 Conductor insulation
21 - 2.4.2 Earthing conductors
22 - 2.4.3 Neutral earthing conductor
22 - 2.4.4 Power conductors
22 - 2.4.5 Control, protection and auxiliary conductors
22 - 2.4.6 Intrinsically safe conductors
22 - 2.4.7 Internal wiring
23 - 2.4.8 Cables
23 - 2.5 CONNECTION FACILITIES FOR EARTHING OR BONDING CONDUCTORS
23 - 2.5.1 General
23 - 2.5.2 Circuits containing voltages below 50V to earth
24 - 2.5.3 Provision for earthing circuits above 1200V
24 - 2.6 PROTECTION REQUIREMENTS
24 - 2.6.1 General
24 - 2.6.2 Protection devices
27 - 2.6.3 Transformer protection
27 - 2.6.4 Motor protection
27 - 2.6.5 Control protection or auxiliary circuits
27 - 2.7 REMOTE CONTROL
28 - SECTION 3 SPECIFIC LOCATION REQUIREMENTS
28 - 3.1 GENERAL
28 - 3.2 HAZARDOUS AREAS
28 - 3.2.1 Electric arcing interlocking
29 - 3.2.2 Enclosures
30 - 3.2.3 Batteries
30 - 3.2.4 Cable hose
30 - 3.2.5 Machine cables
31 - 3.2.6 Intrinsically safe plugs and sockets
33 - SECTION 4 TESTS
33 - 4.1 TYPE TESTS
33 - 4.1.1 Verification of compliance
33 - 4.1.2 Certificates of type tests
33 - 4.1.3 Exemption from re-test
33 - 4.1.4 Explosion-protection tests
33 - 4.1.5 Verification of the manufacturers assigned fault rating
34 - 4.1.6 Test arrangement
34 - 4.1.7 Short-circuit protective device incorporated
34 - 4.1.8 Short-circuit protective device not incorporated
34 - 4.1.9 Rated short-time withstand current test
35 - 4.1.10 Relationship between peak and r.m.s. values for short-circuit current
35 - 4.1.11 Test conditions and criteria
35 - 4.1.12 Power circuit test method and application
36 - 4.1.13 Criteria of acceptance
37 - 4.1.14 Temperature rise test
37 - 4.1.15 Temperature rise test for motors
38 - 4.1.16 Temperature measurements
38 - 4.2 ROUTINE TESTS
38 - 4.2.1 General
38 - 4.2.2 Insulation resistance test
39 - 4.2.3 High voltage test
40 - 4.2.4 Function test
40 - 4.2.5 Additional routine tests
41 - SECTION 5 MARKING AND LABELLING
41 - 5.1 EQUIPMENT MARKING
41 - 5.2 COMPONENT MARKING
41 - 5.3 WIRING MARKING
42 - 5.4 WARNING LABEL
42 - 5.5 WARNING PLATES
43 - APPENDIX A - INFORMATION TO BE SUPPLIED BY THE PURCHASER
43 - A1 RELATING TO THE SYSTEM TO BE INSTALLED
43 - A2 RELATING TO CONNECTED ELECTRICAL EQUIPMENT, WHERE KNOWN
43 - A3 RELATING TO CABLES AND CABLE ENTRIES
44 - APPENDIX B - INTEGRATED CONTROL SYSTEMS
44 - B1 GENERAL
44 - B2 RECOMMENDED PROCESS
44 - B3 OTHER RECOMMENDATIONS
45 - APPENDIX C - ADDITIONAL INFORMATION ON FLAMEPROOF ENCLOSURES
45 - C1 PRECAUTIONS ASSOCIATED WITH HIGH ENERGY ARC FAULTS
45 - C2 DOCUMENTATION
46 - APPENDIX D - DOCUMENTATION REQUIREMENTS