AS/NZS 4871.1:2012
Electrical equipment for mines and quarries - Part 1: General requirements
Sets out the minimum design, manufacturing, testing and performance requirements for electrical equipment intended for use in mines and quarries.
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AS/NZS 4871.1:2012 ELECTRICAL EQUIPMENT FOR MINES AND QUARRIES - GENERAL REQUIREMENTS
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE
1.2 APPLICATION
1.3 SERVICE CONDITIONS
1.4 REFERENCED DOCUMENTS
1.5 DEFINITIONS
1.5.1 Access cover
1.5.2 Adaptor
1.5.3 Approved
1.5.4 Area, hazardous
1.5.5 Area, non-hazardous (safe)
1.5.6 Automatic circuit opening device
1.5.7 Automatic control
1.5.8 Cable entry
1.5.9 Certification/Certify
1.5.10 Certifying authority
1.5.11 Circuit-breaker
1.5.12 Clearance
1.5.13 Combination fuse switch (CFS)
1.5.14 Conduit entry
1.5.15 Connection facilities
1.5.16 Contactor
1.5.17 Cover
1.5.18 Creepage distance
1.5.19 Dead front
1.5.20 Disconnector (isolating switch)
1.5.21 Distribution, control box and auxiliary equipment
1.5.22 Earth-continuity protection
1.5.23 Earth-fault current limitation
1.5.24 Earth-fault lockout protection
1.5.25 Earth-fault protection
1.5.26 Electrical equipment
1.5.27 Enclosure
1.5.28 Equipotential bonding
1.5.29 Ex component
1.5.30 Explosion protected
1.5.31 Explosion protection
1.5.32 Explosive atmosphere
1.5.33 Exposed conductive part
1.5.34 Fail-to-safety (fail-safe)
1.5.35 Fixed equipment
1.5.36 Flame resistant
1.5.37 Flameproof enclosure
1.5.38 Fuse, HRC
1.5.39 Handheld equipment
1.5.40 Ignition temperature
1.5.41 Interlocking device
1.5.42 Intrinsically safe circuit
1.5.43 Inverse time-delay overcurrent release
1.5.44 Light alloy
1.5.45 Local control
1.5.46 Maximum surface temperature
1.5.47 Mobile machine
1.5.48 Outlet
1.5.49 Overload protection
1.5.50 Pilot core
1.5.51 Portable equipment
1.5.52 Protective earthing conductor
1.5.53 Rated conditional short-circuit current
1.5.54 Rated peak withstand current
1.5.55 Rated prospective short-circuit current
1.5.56 Rated short-time withstand current
1.5.57 Rating
1.5.58 Regulatory authority
1.5.59 Relevant standards
1.5.60 Restrained plug and receptacle
1.5.61 Section circuit-breaker
1.5.62 Section isolator
1.5.63 Sensitive earth-fault protection
1.5.64 Short-circuit protection
1.5.65 Shunt release
1.5.66 Substation
1.5.67 Switching device
1.5.68 Temperature classification
1.5.69 Terminal compartment
1.5.70 Testing station
1.5.71 Transportable equipment
1.5.72 Transportable substation
1.5.73 Undervoltage release
1.5.74 Voltage
1.6 EXISTING EQUIPMENT
SECTION 2 COMMON REQUIREMENTS
2.1 GENERAL
2.1.1 Risk management
2.1.2 Supply system
2.1.3 System fault levels
2.1.4 Equipment selection
2.1.5 Temperature rating
2.1.6 Assembly
2.1.7 Construction
2.1.8 Arc blast protection
2.2 ENCLOSURE REQUIREMENTS
2.2.1 General
2.2.2 Ingress protection (IP)
2.2.3 Internal segregation
2.2.4 Withdrawable and plug-in equipment
2.2.5 Unused openings and threaded entries
2.2.6 Interlocking
2.2.7 Protection against direct and indirect contact
2.3 COMPONENTS REQUIREMENTS
2.3.1 Creepage and clearance
2.3.2 Switching devices
2.3.3 Transformers
2.3.4 Measuring instruments
2.3.5 Terminals
2.3.6 Cable connection
2.3.7 Motors
2.3.8 Variable speed drives
2.3.9 Resistors
2.3.10 Electronic-based systems
2.3.11 EMC immunity and emission
2.4 CONDUCTORS AND CABLING REQUIREMENTS
2.4.1 Conductor insulation
2.4.2 Protective earthing conductors
2.4.3 Neutral earthing conductor
2.4.4 Power conductors
2.4.5 Control, protection and auxiliary conductors
2.4.6 Internal wiring
2.4.7 Cables
2.5 CONNECTION FACILITIES FOR EARTHING AND EQUIPOTENTIAL BONDING CONDUCTORS
2.5.1 General
2.5.2 Cables containing only analog and/or digital signals
2.5.3 Circuits requiring earthing
2.6 PROTECTION REQUIREMENTS
2.6.1 General
2.6.2 Earth-protection scheme
2.6.3 Protection devices
2.6.4 Transformer protection
2.6.5 Motor protection
2.6.6 Control, protection or auxiliary circuits
2.7 REMOTE CONTROL
2.8 PROXIMITY DETECTION
2.9 THERMOGRAPHY
SECTION 3 HAZARDOUS AREA REQUIREMENTS
3.1 SCOPE OF SECTION
3.2 EXPLOSION PROTECTION
3.3 ALUMINIUM OR LIGHT METAL ALLOY PARTS
3.4 INTERLOCKING
3.4.1 General
3.4.2 Electrical interlocking
3.4.3 Pilot protection of restrained receptacles
3.4.4 Earth-fault lockout
3.4.5 Earth continuity and earth-fault lockout protection in hazardous zones
3.5 ENCLOSURES
3.5.1 Stored energy devices other than batteries
3.5.2 Explosion-protected enclosures
3.5.3 High energy arcing faults
3.5.4 Temperature rating
3.6 MOTORS
3.7 BATTERIES
3.8 CABLE HOSE
3.9 MACHINE CABLES
3.9.1 General
3.9.2 Machine power cables
3.9.3 Machine control cables and extra-low voltage power cables
3.9.4 Intrinsically safe data or fibre optic cables
3.9.5 Fibre optic cable and light sources
3.9.6 Intrinsically safe cables
3.9.7 Intrinsically safe cable parameters
3.9.8 Non-intrinsically safe data and communication cables
3.9.9 Light alloy screening
3.10 INTRINSICALLY SAFE PLUGS AND SOCKETS
3.11 INTRINSICALLY SAFE CONDUCTORS
3.11.1 General
3.11.2 Earthing of intrinsically safe circuits
SECTION 4 TESTS
4.1 GENERAL
4.2 TYPE TESTS
4.2.1 General
4.2.2 Certificates of type tests
4.2.3 Exemption from re-test
4.3 ROUTINE TESTS
4.4 TESTING OF DEVICES AND SELF-CONTAINED COMPONENTS INCORPORATED IN THE ASSEMBLY
4.5 HIGH VOLTAGE TESTS
SECTION 5 MARKING AND LABELLING
5.1 EQUIPMENT MARKING
5.2 COMPONENT MARKING
5.3 WIRING MARKING
5.4 WARNING LABELS
5.5 RATING PLATE
SECTION 6 DOCUMENTATION
6.1 SAFETY FILE
6.2 TECHNICAL MAINTENANCE AND OPERATIONAL MANUALS
APPENDIX A - INFORMATION TO BE SUPPLIED BY THE PURCHASER
A1 RELATING TO THE INSTALLED ELECTRICAL SYSTEM
A2 ELECTRICAL EQUIPMENT REQUIREMENTS
A3 RELATING TO CABLES AND CABLE ENTRIES
APPENDIX B - INTEGRATED CONTROL SYSTEMS
B1 GENERAL
B2 RECOMMENDED PROCESS
B3 OTHER RECOMMENDATIONS
APPENDIX C - GUIDANCE ON EARTH-PROTECTION SYSTEMS
C1 GENERAL
C2 EXAMPLES
C2.1 Example 1
C2.2 Example 2
C2.3 Example 3
C3 CALCULATION OF PROSPECTIVE TOUCH VOLTAGE
APPENDIX D - MINIMUM CLEARANCE AND CREEPAGES IN AIR
APPENDIX E - VARIABLE SPEED DRIVE-GUIDANCE FOR IDENTIFICATION OF POTENTIAL RISKS
APPENDIX F - ADDITIONAL INFORMATION ON FLAMEPROOF ENCLOSURES
APPENDIX G - DOCUMENTATION
G1 SAFETY FILE
G2 PROPRIETORY INFORMATION
APPENDIX H - TEST METHODS
H1 TYPE TESTS
H1.1 Verification of surface temperature-rise limits
H1.2 Verification of short-circuit withstand strength
H1.3 Verification of the effectiveness of the protective earth circuit
H1.4 Verification of clearances and creepage distances
H1.5 Lightning impulse test
H2 ROUTINE TESTS
H2.1 General
H2.2 Inspection of the assembly including inspection of wiring, electrical and mechanical operation test
H2.3 Dielectric and insulation test
H2.4 Checking of the protective earth circuits
H2.5 Partial discharge test
H2.6 Additional routine tests
Amendments
Previous versions
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References
Electromagnetic compatibility (EMC) - Part 4.14: Testing and measurement techniques - Voltage fluctuation immunity test for equipment with input current not exceeding 16 A per phase
Electromagnetic compatibility (EMC) - Testing and measurement techniques - Test for immunity to conducted common mode disturbances in the frequency range 0 Hz to 150 kHz
Electromagnetic compatibility (EMC) - Part 4.27: Testing and measurement techniques - Unbalance, immunity test for equipment with input current not exceeding 16 A per phase
Electromagnetic compatibility (EMC) - Part 4.7: Testing and measurement techniques - General guide on harmonics and interharmonics measurements and instrumentation, for power supply systems and equipment connected thereto
Electromagnetic compatibility (EMC) - Generic standards - Immunity for residential, commercial and light industrial environments
Electromagnetic compatibility (EMC) - Part 3.13: Limits - Assessment of emission limits for the connection of unbalanced installations to MV, HV and EHV power systems
Electromagnetic compatibility (EMC) - Part 3.6: Limits - Assessment of emission limits for the connection of distorting installations to MV, HV and EHV power systems
Electromagnetic compatibility (EMC) - Part 3.7: Limits - Assessment of emission limits for the connection of fluctuating installations to MV, HV and EHV power systems
Related Information
Electricity (Safety) Regulations 2010
Ministry: WorkSafe New Zealand: Energy Safety
Section: Schedule 4, Clause 15
Citation context:standard Q means AS/NZS 4871.1:2012
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AS/NZS 4871.1:2012 ELECTRICAL EQUIPMENT FOR MINES AND QUARRIES - GENERAL REQUIREMENTS
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE
1.2 APPLICATION
1.3 SERVICE CONDITIONS
1.4 REFERENCED DOCUMENTS
1.5 DEFINITIONS
1.5.1 Access cover
1.5.2 Adaptor
1.5.3 Approved
1.5.4 Area, hazardous
1.5.5 Area, non-hazardous (safe)
1.5.6 Automatic circuit opening device
1.5.7 Automatic control
1.5.8 Cable entry
1.5.9 Certification/Certify
1.5.10 Certifying authority
1.5.11 Circuit-breaker
1.5.12 Clearance
1.5.13 Combination fuse switch (CFS)
1.5.14 Conduit entry
1.5.15 Connection facilities
1.5.16 Contactor
1.5.17 Cover
1.5.18 Creepage distance
1.5.19 Dead front
1.5.20 Disconnector (isolating switch)
1.5.21 Distribution, control box and auxiliary equipment
1.5.22 Earth-continuity protection
1.5.23 Earth-fault current limitation
1.5.24 Earth-fault lockout protection
1.5.25 Earth-fault protection
1.5.26 Electrical equipment
1.5.27 Enclosure
1.5.28 Equipotential bonding
1.5.29 Ex component
1.5.30 Explosion protected
1.5.31 Explosion protection
1.5.32 Explosive atmosphere
1.5.33 Exposed conductive part
1.5.34 Fail-to-safety (fail-safe)
1.5.35 Fixed equipment
1.5.36 Flame resistant
1.5.37 Flameproof enclosure
1.5.38 Fuse, HRC
1.5.39 Handheld equipment
1.5.40 Ignition temperature
1.5.41 Interlocking device
1.5.42 Intrinsically safe circuit
1.5.43 Inverse time-delay overcurrent release
1.5.44 Light alloy
1.5.45 Local control
1.5.46 Maximum surface temperature
1.5.47 Mobile machine
1.5.48 Outlet
1.5.49 Overload protection
1.5.50 Pilot core
1.5.51 Portable equipment
1.5.52 Protective earthing conductor
1.5.53 Rated conditional short-circuit current
1.5.54 Rated peak withstand current
1.5.55 Rated prospective short-circuit current
1.5.56 Rated short-time withstand current
1.5.57 Rating
1.5.58 Regulatory authority
1.5.59 Relevant standards
1.5.60 Restrained plug and receptacle
1.5.61 Section circuit-breaker
1.5.62 Section isolator
1.5.63 Sensitive earth-fault protection
1.5.64 Short-circuit protection
1.5.65 Shunt release
1.5.66 Substation
1.5.67 Switching device
1.5.68 Temperature classification
1.5.69 Terminal compartment
1.5.70 Testing station
1.5.71 Transportable equipment
1.5.72 Transportable substation
1.5.73 Undervoltage release
1.5.74 Voltage
1.6 EXISTING EQUIPMENT
SECTION 2 COMMON REQUIREMENTS
2.1 GENERAL
2.1.1 Risk management
2.1.2 Supply system
2.1.3 System fault levels
2.1.4 Equipment selection
2.1.5 Temperature rating
2.1.6 Assembly
2.1.7 Construction
2.1.8 Arc blast protection
2.2 ENCLOSURE REQUIREMENTS
2.2.1 General
2.2.2 Ingress protection (IP)
2.2.3 Internal segregation
2.2.4 Withdrawable and plug-in equipment
2.2.5 Unused openings and threaded entries
2.2.6 Interlocking
2.2.7 Protection against direct and indirect contact
2.3 COMPONENTS REQUIREMENTS
2.3.1 Creepage and clearance
2.3.2 Switching devices
2.3.3 Transformers
2.3.4 Measuring instruments
2.3.5 Terminals
2.3.6 Cable connection
2.3.7 Motors
2.3.8 Variable speed drives
2.3.9 Resistors
2.3.10 Electronic-based systems
2.3.11 EMC immunity and emission
2.4 CONDUCTORS AND CABLING REQUIREMENTS
2.4.1 Conductor insulation
2.4.2 Protective earthing conductors
2.4.3 Neutral earthing conductor
2.4.4 Power conductors
2.4.5 Control, protection and auxiliary conductors
2.4.6 Internal wiring
2.4.7 Cables
2.5 CONNECTION FACILITIES FOR EARTHING AND EQUIPOTENTIAL BONDING CONDUCTORS
2.5.1 General
2.5.2 Cables containing only analog and/or digital signals
2.5.3 Circuits requiring earthing
2.6 PROTECTION REQUIREMENTS
2.6.1 General
2.6.2 Earth-protection scheme
2.6.3 Protection devices
2.6.4 Transformer protection
2.6.5 Motor protection
2.6.6 Control, protection or auxiliary circuits
2.7 REMOTE CONTROL
2.8 PROXIMITY DETECTION
2.9 THERMOGRAPHY
SECTION 3 HAZARDOUS AREA REQUIREMENTS
3.1 SCOPE OF SECTION
3.2 EXPLOSION PROTECTION
3.3 ALUMINIUM OR LIGHT METAL ALLOY PARTS
3.4 INTERLOCKING
3.4.1 General
3.4.2 Electrical interlocking
3.4.3 Pilot protection of restrained receptacles
3.4.4 Earth-fault lockout
3.4.5 Earth continuity and earth-fault lockout protection in hazardous zones
3.5 ENCLOSURES
3.5.1 Stored energy devices other than batteries
3.5.2 Explosion-protected enclosures
3.5.3 High energy arcing faults
3.5.4 Temperature rating
3.6 MOTORS
3.7 BATTERIES
3.8 CABLE HOSE
3.9 MACHINE CABLES
3.9.1 General
3.9.2 Machine power cables
3.9.3 Machine control cables and extra-low voltage power cables
3.9.4 Intrinsically safe data or fibre optic cables
3.9.5 Fibre optic cable and light sources
3.9.6 Intrinsically safe cables
3.9.7 Intrinsically safe cable parameters
3.9.8 Non-intrinsically safe data and communication cables
3.9.9 Light alloy screening
3.10 INTRINSICALLY SAFE PLUGS AND SOCKETS
3.11 INTRINSICALLY SAFE CONDUCTORS
3.11.1 General
3.11.2 Earthing of intrinsically safe circuits
SECTION 4 TESTS
4.1 GENERAL
4.2 TYPE TESTS
4.2.1 General
4.2.2 Certificates of type tests
4.2.3 Exemption from re-test
4.3 ROUTINE TESTS
4.4 TESTING OF DEVICES AND SELF-CONTAINED COMPONENTS INCORPORATED IN THE ASSEMBLY
4.5 HIGH VOLTAGE TESTS
SECTION 5 MARKING AND LABELLING
5.1 EQUIPMENT MARKING
5.2 COMPONENT MARKING
5.3 WIRING MARKING
5.4 WARNING LABELS
5.5 RATING PLATE
SECTION 6 DOCUMENTATION
6.1 SAFETY FILE
6.2 TECHNICAL MAINTENANCE AND OPERATIONAL MANUALS
APPENDIX A - INFORMATION TO BE SUPPLIED BY THE PURCHASER
A1 RELATING TO THE INSTALLED ELECTRICAL SYSTEM
A2 ELECTRICAL EQUIPMENT REQUIREMENTS
A3 RELATING TO CABLES AND CABLE ENTRIES
APPENDIX B - INTEGRATED CONTROL SYSTEMS
B1 GENERAL
B2 RECOMMENDED PROCESS
B3 OTHER RECOMMENDATIONS
APPENDIX C - GUIDANCE ON EARTH-PROTECTION SYSTEMS
C1 GENERAL
C2 EXAMPLES
C2.1 Example 1
C2.2 Example 2
C2.3 Example 3
C3 CALCULATION OF PROSPECTIVE TOUCH VOLTAGE
APPENDIX D - MINIMUM CLEARANCE AND CREEPAGES IN AIR
APPENDIX E - VARIABLE SPEED DRIVE-GUIDANCE FOR IDENTIFICATION OF POTENTIAL RISKS
APPENDIX F - ADDITIONAL INFORMATION ON FLAMEPROOF ENCLOSURES
APPENDIX G - DOCUMENTATION
G1 SAFETY FILE
G2 PROPRIETORY INFORMATION
APPENDIX H - TEST METHODS
H1 TYPE TESTS
H1.1 Verification of surface temperature-rise limits
H1.2 Verification of short-circuit withstand strength
H1.3 Verification of the effectiveness of the protective earth circuit
H1.4 Verification of clearances and creepage distances
H1.5 Lightning impulse test
H2 ROUTINE TESTS
H2.1 General
H2.2 Inspection of the assembly including inspection of wiring, electrical and mechanical operation test
H2.3 Dielectric and insulation test
H2.4 Checking of the protective earth circuits
H2.5 Partial discharge test
H2.6 Additional routine tests
Amendments
Previous versions
AS/NZS 4871.1:2012
Online Library subscription information
Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team.