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