AS 3007.4-1987

1 - AS 3007.4-1987 ELECTRICAL INSTALLATIONS-SURFACE MINES AND ASSOCIATED PROCESSING PLANT - ADDITIONAL REQUIREMENTS FOR SPECIFIC
4 - PREFACE
5 - CONTENTS
6 - SCOPE OF PART
6 - REFERENCED DOCUMENTS
7 - SECTION 1. WINNING, STACKING AND PRIMARY PROCESSING MACHINERY
7 - INTRODUCTION.
7 - 1 SPECIAL ADDITIONAL REQUIREMENTS FOR AND EXEMPTIONS FROM PROTECTION AGAINST DIRECT AND INDIRECT CONTACT.
7 - 1.1 Off-board mobile and movable auxiliary equipment.
7 - 1.2 Insulation monitoring device for IT systems.
7 - 1.3 Insulation monitoring devices for vulcanizing heating platens.
7 - 1.4 Electric hand tools.
7 - 1.5 Electric hand lamps.
7 - 2 DRIVES.
7 - 2.1 Effects on voltage levels.
7 - 2.2 Supply systems.
7 - 3 EXTERNAL POWER SUPPLY SYSTEMS.
7 - 3.1 System design.
7 - 3.2 Overcurrent protection.
7 - 3.3 Automatic reclosing or transferring.
7 - 3.4 System voltage.
7 - 4 SELF-CONTAINED POWER SYSTEMS.
7 - 4.1 System design.
7 - 4.2 Fire protection.
7 - 4.3 Earthing.
7 - 4.4 Supply to off- board equipment.
7 - 5 CABLE TYPES.
7 - 6 CONTROL CIRCUITS AND CONTROL DEVICES.
7 - 6.1 Shock, vibration and voltage fluctuations.
8 - 6.2 Synchronous motor control.
8 - 6.2.1 Automatic discharge of field energy.
8 - 6.2.2 Automatic field excitation control.
8 - 6.3 Stop controls.
8 - 6.3.1 Use of stop controls
8 - 6.3.2 Location of stop controls.
8 - 6.4 Start controls.
8 - 7 EMERGENCY STOPPING AND EMERGENCY DEVICES.
8 - 7.1 Emergency stop controls.
8 - 7.2 Emergency stopping.
8 - 7.3 Emergency devices.
8 - 8 PROVISION OF SUPPLY ISOLATION.
9 - SECTION 2. TRANSPORT CONVEYOR SYSTEMS
9 - INTRODUCTION.
9 - 9 SPECIAL ADDITIONAL REQUIREMENTS FOR AND EXEMPTIONS FROM PROTECTION AGAINST DIRECT AND INDIRECT CONTACT.
9 - 9.1 Equipotential bonding conductor and conductivity of structural parts.
9 - 9.2 Off-board mobile and movable auxiliary equipment.
9 - 9.3 Insulation monitoring device for IT systems.
9 - 9.4 Insulation moni toring devices for vulcanizing heating platens.
9 - 9.5 Electric hand tools.
9 - 9.6 Electric hand lamps.
9 - 10 CABLES.
9 - 10.1 General.
9 - 10.2 Power supply cables.
9 - 11 STOP CONTROLS.
9 - 11.1 Use of stop controls.
9 - 11.2 Stopping sequence.
9 - 11.3 Location of stop controls.
9 - 11.4 Pul lwire stop controls.
9 - 12 EMERGENCY STOPPING AND EMERGENCY DEVICES.
9 - 13 PROVISION FOR SUPPLY ISOLATION.
10 - SECTION 3. PUMPING AND WATER SUPPLY SYSTEMS
10 - INTRODUCTION.
10 - 14 SPECIAL ADDITIONAL REQUIREMENTS FOR AND EXEMPTIONS FROM PROTECTION AGAINST DIRECT AND INDIRECT CONTACT.
10 - 14.1 Deep-well type pumps.
10 - 14.1.1 Risers as protective conductors
10 - 14.1.2 Continued operation after first earth fault.
10 - 14.1.3 Equipotential bonding.
10 - 14.1.4 Exemption from insulation monitoring
10 - 14.1.5 Double line to earth faults.
11 - SECTION 4. SECONDARY PROCESSING MACHINERY
11 - INTRODUCTION.
11 - 15 SPECIAL ADDITIONAL REQUIREMENTS FOR AND EXEMPTIONS FROM PROTECTION AGAINST DIRECT AND INDIRECT CONTACT.
11 - 15.1 Insulation monitoring device for IT systems.
11 - 15.2 Insulation monitoring devices for vulcanizing heating platens.
11 - 16 DRIVES AND OTHER ELECTRICAL LOADS.
11 - 16.1 Application of requirements.
11 - 16.2 Effects on voltage levels.
11 - 16.3 Supply systems.
11 - 17 EXTERNAL POWER SUPPLY SYSTEMS.
11 - 17.1 System design.
11 - 17.2 Overcurrent protection.
11 - 17.3 Automatic reclosing or transferring.
11 - 17.4 Suppl y voltage.
11 - 18 SELF-CONTAINED POWER SYSTEMS.
11 - 18.1 System design.
11 - 18.2 Fire protection.
11 - 18.3 Earthing.
11 - 19 CABLE TYPES AND PROTECTION.
11 - 20 CONTROL CIRCUITS AND CONTROL DEVICES.
11 - 20.1 Stop controls.
11 - 21.1.1 Location of stop controls.
11 - 21.1.2 Stopping sequence
11 - 20.2 Start controls.
12 - 20.3 Shock, vibration and voltage fluctuations.
12 - 20.4 Synchronous motor control.
12 - 21 EMERGENCY STOPPING AND EMERGENCY STOP CONTROLS.
12 - 21.1 Emergency stopping.
12 - 21.2 Emergency stop controls.
12 - 22 PROVISION FOR SUPPLY ISOLATION.
12 - 23 EXPLOSIVE ATMOSPHERES.
12 - 24 STATIC ELECTRICITY.
12 - 24.1 General.
12 - 24.2 Common sources of generation.
12 - 24.3 Fire and explosion dangers.
12 - 24.4 Removal of fire and explosion dangers.
13 - 25 ELECTROSTATIC PRECIPITATORS.
13 - 26 RADIOACTIVE SOURCES.
13 - 27 RAIL-MOUNTED EQUIPMENT.
13 - 28 HAZARDS FROM INDUCTION.
14 - APPENDIX A - EXAMPLES OF CIRCUIT ARRANGEMENTS FOR EMERGENCY DEVICES
16 - APPENDIX B - GUIDELINES FOR LOW SIGNAL LEVEL SYSTEMS AND COMMUNICATION SYSTEMS
16 - INTRODUCTION.
16 - B1 ASSESSMENT OF GENERAL CHARACTERISTICS.
16 - B2 PROTECTION OF PERSONS AGAINST THE TRANSFER OF UNSAFE VOLTAGES.
16 - B2.1 Causes of voltage transfer.
16 - B2.2 Measures for protecting persons against direct transfer of unsafe voltages.
17 - B2.3 Measures for protecting persons against indirect transfer of unsafe voltages.
17 - B3 PROTECTION OF LOW SIGNAL LEVEL SYSTEMS AGAINST MALFUNCTION DUE TO INTERFERENCE.
17 - B3.1 Basic principle.
17 - B3.2 Protection measures.
18 - B3.3 Transmission by cable.
18 - B3.4 Transmission by power line carrier.
19 - B3.5 Transmission by radio.
19 - B3.6 Transmission by optical means.
20 - ANNEX - SUMMARY OF TECHNICAL DEVIATIONS BETWEEN THIS STANDARD AND IEC 621-4

Sets out additional requirements which are specific to particular installations. Sections deal with winning, stacking and primary processing machinery, transport conveyor systems, pumping and water supply systems and secondary processing machinery. Guidelines for the installation of low signal level systems and communication systems are provided in an appendix. Technically equivalent to IEC 621-4.

This standard sets out the requirements which are specific to particular installations within the scope of AS 3007.1, together with any exemptions from the general requirements of AS 3007.2 and AS 3007.3 which apply for such installations.NOTE: Appendix B provides guidelines for the installation of low signal level systems and communication systems.