AS 2380.6-1988

1 - AS 2380.6-1988 ELECTRICAL EQUIPMENT FOR EXPLOSIVE ATMOSPHERES - EXPLOSION-PROTECTION TECHNIQUES - INCREASED SAFETY
4 - PREFACE
5 - CONTENTS
6 - SECTION 1. SCOPE AND DEFINITIONS
6 - 1.1 SCOPE.
6 - 1.2 REFERENCED DOCUMENTS.
6 - 1.3 DEFINITIONS.
6 - 1.3.1 Increased safety
6 - 1.3.2 Limiting temperature
6 - 1.3.3 Initial starting current IA
6 - 1.3.4 Starting current ratio I A /I N
6 - 1.3.5 Time tE
6 - 1.3.6 Thermal current limit I th
7 - 1.3.7 Dynamic current limit I dyn
7 - 1.3.8 Creepage distance
7 - 1.3.9 Clearance
7 - 1.3.10 Working voltage
8 - SECTION 2. REQUIREMENTS FOR THE CONSTRUCTION OF ALL ELECTRICAL EQUIPMENT
8 - 2.1. SCOPE OF SECTIONS.
8 - 2.2 TERMINALS FOR EXTERNAL CONNECTIONS.
8 - 2.3 INTERNAL CONNECTIONS.
8 - 2.4 CLEARANCES.
8 - 2.5 CREEPAGE DISTANCES.
8 - 2.5.1 General.
9 - 2.6 SURFACE PROFILES.
9 - 2.7 SOLID ELECTRICAL INSULATING MATERIALS.
9 - 2.7.1 General.
9 - 2.7.2 Thermal stability.
9 - 2.7.3 Insulating varnish.
9 - 2.8 WINDINGS.
9 - 2.8.1 General.
9 - 2.8.2 Coverings.
9 - 2.8.3 Compliance.
9 - 2.8.4 Impregnation.
9 - 2.8.5 Minimum size of wires.
11 - 2.9 LIMITING TEMPERATURE.
11 - 2.9.1 General.
11 - 2.9.2 Bare conductors.
11 - 2.9.3 Temperature of conductors.
11 - 2.9.4 Temperature of insulating windings.
11 - 2.9.5 Temperature of luminaires.
11 - 2.9.6 Measuring instruments and measurement transformers
11 - 2.9.7 Terminals.
11 - 2.9.8 Machines with cage rotors.
11 - 2.10 OVER-TEMPERATURE PROTECTION.
11 - 2.10.1 Windings.
11 - 2.10.2 Requirements for thermal protection.
11 - 2.10.3 Machines with cage rotors.
11 - 2.11 INTERNAL WIRING.
12 - 2.12 DEGREES OF PROTECTION FOR ENCLOSURES.
13 - SECTION 3. SUPPLEMENTARY REQUIREMENTS FOR CERTAIN ELECTRICAL EQUIPMENT
13 - 3.1 ROTATING ELECTRICAL MACHINES.
13 - 3.1.1 Degree of protection.
13 - 3.1.2 Internal fans.
13 - 3.1.3 Minimum radial air gap.
13 - 3.1.4 Machines with cage rotors.
13 - 3.2 LUMINAIRES DESIGNED FOR MAINS SUPPLY.
13 - 3.2.1 Permissible types.
13 - 3.2.2 Limiting distances.
14 - 3.2.3 Lampholders.
14 - 3.3 MEASURING INSTRUMENTS AND MEASURING TRANSFORMERS.
14 - 3.3.1 Rating.
14 - 3.3.2 Thermal and dynamic stress requirements.
14 - 3.3.4 Exception to requirements.
14 - 3.3.5 Moving coil instruments.
14 - 3.3.6 Current transformers.
14 - 3.4 TRANSFORMERS OTHER THAN MEASURING TRANSFORMERS
14 - 3.5 GENERAL PURPOSE CONNECTION AND JUNCTION BOXES.
14 - 3.5.1. Maximum dissipating power.
14 - 3.5.2 Selection of cables.
14 - 3.6 CABLE GLANDS.
14 - 3.7 CAPACITORS.
16 - SECTION 4. VERIFICATION AND TESTS
16 - 4.1 TYPE VERIFICATION AND TESTS.
16 - 4.2 ELECTRIC STRENGTH.
16 - 4.3 ROTATING ELECTRICAL MACHINES.
16 - 4.3.1 Locked rotor tests.
16 - 4.3.2 Machine orientation.
16 - 4.4 LUMINAIRES DESIGNED FOR MAINS SUPPLY.
16 - 4.4.1 Thermal test for luminaires with tubular fluorescent lamps
16 - 4.5 MEASURING INSTRUMENTS AND MEASURING TRANSFORMERS.
16 - 4.5.1 Temperature rise test.
16 - 4.5.2 Dynamic and thermal strength.
16 - 4.6 TRANSFORMERS OTHER THAN MEASURING TRANSFORMERS
16 - 4.7 ROUTINE VERIFICATION AND TESTS.
17 - SECTION 5. MARKING
17 - 5.1 GENERAL.
18 - APPENDIX A - TYPICAL ‘Ex e’ TERMINALS
19 - APPENDIX B - GUIDANCE FOR THE THERMAL PROTECTION OF CAGE MOTORS IN SERVICE
19 - B1 SCOPE.
19 - B2 PROTECTION DEVICES.
20 - APPENDIX C - LAMPHOLDERS AND LAMP CAPS FOR LUMINAIRES DESIGNED FOR MAINS SUPPLY
20 - C1 COMPLIANCE WITH AS 2480.
20 - C2 SCREW LAMPHOLDERS.
20 - C3 LAMPHOLDERS FOR TUBULAR FLUORESCENT LAMPS.
20 - C4 OTHER LAMPHOLDER TYPES.
21 - APPENDIX D - CAGE MOTORS - METHODS OF TEST AND OF CALCULATION
21 - D1 GENERAL.
21 - D2 EXPERIMENTAL DETERMINATION OF TEMPERATURE RISE.
21 - D3 CALCULATION OF TEMPERATURE RISE.
22 - D4 DETERMINATION OF TIME t
22 - D5 MOTORS DESIGNED FOR ARDUOUS STARTING CONDITIONS OR PROVIDED WITH SPECIAL PROTECTIVE DEVICES.
22 - D6 CONVERTORS.
23 - APPENDIX E - METHOD FOR DETERMINING PERMISSIBLE MAXIMUM DISSIPATING POWER