AS 1076.6-1977

1 - AS 1076, PART 6-1977 SELECTION, INSTALLATION AND MAINTENANCE OF ELECTRICAL APPARATUS AND ASSOCIATED EQUIPMENT FOR USE .....
4 - PREFACE
6 - CONTENTS
7 - FOREWORD
9 - SECTION 1. SCOPE AND GENERAL
9 - 1.1 SCOPE
9 - 1.2 DEFINITIONS
9 - 1.2.1 Increased safety
9 - 1.2.2 Limiting temperature
9 - 1.2.3 Starting current (I A )
9 - 1.2.4 Starting current ratio (IA /IN )
9 - 1.2.5 Time (tE )
10 - 1.2.6 Thermal current limit (Ith )
10 - 1.2.7 Dynamic current limit (Idyn )
10 - 1.2.8 Creepage distance
10 - 1.2.9 Clearance
10 - 1.3 DESCRIPTION OF TECHNIQUE
10 - 1.3.1 Principle
10 - 1.3.2 Practice
10 - 1.3.2.1 Avoidance of arcing and sparking parts
10 - 1.3.2.2 Insulation
11 - 1.3.2.3 Temperature
11 - 1.3.2.4 Enclosure
11 - 1.4 RELEVANT SPECIFICATIONS
11 - 1.5 PERMISSIBLE ZONES OF USE
11 - 1.5.1 Zone 0
12 - 1.5.2 Zones 1 and 2
12 - 1.6 CERTIFICATION AND ASSESSMENT OF APPARATUS AND SYSTEMS
13 - SECTION 2. THE SELECTION OF APPARATUS
13 - 2.1 GENERAL
13 - 2.2 TEMPERATURE CLASS
13 - 2.2.1 Apparatus
13 - 2.2.2 Luminaires
13 - 2.2.3 Ambient Temperature
14 - 2.3 CONDITIONS OF USE
14 - 2.3.1 Electrical and Mechanical Protection
14 - 2.3.2 Chemical Compatibility
14 - 2.4 APPARATUS GROUPING
14 - 2.4.1 Exemption
14 - 2.4.2 Grouping of Additional Types of Protection
15 - 2.5 ROTATING MACHINES AND SIMILAR APPARATUS
16 - SECTION 3. INSTALLATION RECOMMENDATIONS
16 - 3.1 GENERAL
16 - 3.2 INSTALLATION OF APPARATUS
16 - 3.3 AUTOMATIC ELECTRICAL PROTECTION
16 - 3.4 WIRING SYSTEMS
16 - 3.4.1 General Recommendations and Requirements
16 - 3.4.2 Choice of Wiring System
16 - 3.4.3 Permissible Wiring Systems
17 - 3.4.4 Temperature
17 - 3.4.5 Use of Non-armoured Cables
17 - 3.5 INSTALLATION OF METALLIC CONDUIT SYSTEMS
17 - 3.6 INSTALLATION OF NON-METALLIC (PLASTICS) CONDUIT SYSTEMS
18 - 3.7 INSTALLATION OF CABLES
19 - 3.8 CONDUCTOR TERMINATIONS
19 - 3.8.1 General
19 - 3.8.2 Means of Connection
20 - 3.8.3 Maintenance of Non-sparking Characteristics
20 - 3.8.4 Saddle Clamps
20 - 3.8.5 Slot-type Terminals
20 - 3.9 PORTABLE AND TRANSPORTABLE APPARATUS AND ITS CONNECTIONS
21 - SECTION 4. INSPECTION AND MAINTENANCE
21 - 4.1 GENERAL
21 - 4.2 INITIAL AND PERIODIC INSPECTIONS
21 - 4.3 MAINTENANCE
24 - APPENDIX A - SELECTION OF ROTATING MACHINES AND THE ASSOCIATED ELECTRICAL PROTECTION APPARATUS
24 - A1 GENERAL.
24 - A2 SELECTION OF THE MACHINE
24 - A2.1 Enclosure Requirements
24 - A2.2 Voltage Range
24 - A2.3 Duty Type
25 - A2.4 Rating
25 - A2.5 Supply Frequency
25 - A2.6 Cooling
25 - A3 SELECTION OF THE AUTOMATIC ELECTRICAL PROTECTION
25 - A3.1 Limiting Temperature
25 - A3.2 Temperature Rise
26 - A3.3 Class of Insulation
26 - A3.4 Temperature Control
26 - A3.4.1 Types of control
27 - A3.4.2 Current-dependent protective devices
27 - A3.4.3 Cage-rotor and synchronous machines
27 - A3.4.4 Arduous starting conditions
29 - APPENDIX B - APPARATUS MARKING
29 - B1 GENERAL
29 - B2 MARKING REQUIREMENTS
30 - B3 APPARATUS GROUPING
30 - B4 TEMPERATURE CLASS
30 - B5 APPARATUS WITH MULTIPLE TYPES OF PROTECTION
31 - B6 EXAMPLES OF MARKING
31 - B6.1 Type of Protection ‘e’ Only
31 - B6.2 Multiple Types of Protection
32 - B7 MARKING OF ROTATING MACHINES
32 - B7.1 Type of Protection ‘e’ Only
32 - B7.2 Multiple Types of Protection
32 - B7.3 Individual Components
33 - APPENDIX C - IMPACT TEST
34 - APPENDIX D - RESISTANCE TO CHEMICAL ATTACK