AS/NZS 2081.5:2002

1 - AS/NZS 2081.5:2002 ELECTRICAL EQUIPMENT FOR COAL AND SHALE MINES-ELECTRICAL PROTECTION DEVICES - EARTH-FAULT CURRENT LIMITERS
4 - PREFACE
6 - CONTENTS
7 - FOREWORD
8 - SECTION 1 SCOPE AND GENERAL
8 - 1.1 SCOPE
8 - 1.2 OBJECTIVE
8 - 1.3 RELATIONSHIP TO REGULATIONS
8 - 1.4 REFERENCED DOCUMENTS
9 - 1.5 DEFINITIONS
10 - SECTION 2 DESIGN AND CONSTRUCTION
10 - 2.1 GENERAL
10 - 2.2 COMPLIANCE WITH STANDARDS
10 - 2.3 PROSPECTIVE EARTH-FAULT CURRENT
10 - 2.4 MANUFACTURING TOLERANCE
10 - 2.5 TEMPERATURE RATING INCLUDING SAFETY FACTOR
10 - 2.6 RATING
10 - 2.6.1 Series-connected (zero-sequence) impedance
10 - 2.6.2 Neutral-connected (zero-sequence) impedance
11 - 2.7 INRUSH CURRENT UNDER SERIES-CONNECTED (ZERO-SEQUENCE) IMPEDANCE
11 - 2.8 POWER FACTOR OF NEUTRAL-CONNECTED (ZERO-SEQUENCE) IMPEDANCE
11 - 2.9 TIME/CURRENT RELATIONSHIP OF RESISTOR DEVICES
11 - 2.10 SPECIFIC REQUIREMENTS FOR RESISTOR DEVICES
12 - 2.11 MARKING
12 - 2.11.1 Enclosed equipment
12 - 2.11.2 Unenclosed equipment
13 - SECTION 3 TESTS
13 - 3.1 REACTIVE DEVICES
13 - 3.2 RESISTIVE DEVICES
13 - 3.2.1 Routine Tests
13 - 3.2.2 Type tests
15 - APPENDIX A - INSTALLATION GUIDANCE
15 - A1 GENERAL
15 - A2 AUXILIARY COMPONENTS
15 - A2.1 Voltage rating of systems connected to an earth-fault current limited circuit.
16 - A2.2 Fixing/Mounting

Specifies requirements for devices intended for use in a.c. power supply sytems for providing earth-fault current limitations. Test methods are included.

This Standard sets out minimum performance requirements for earth-fault current limiter devices intended for use on a.c. power supply systems, having an earth-fault current limitation system (IT system).NOTES:1 Whereas this Standard is based upon 50 Hz supply systems it is envisaged that equipment may be installed upon higher or low frequency supply systems.Consideration of the effects of these installations upon current limitation and effects upon the human body need to be considered. IEC 60479-1 and IEC 60479-2 should be referenced for the effects upon the human body of other supply frequencies.2 Installation guidelines are provided in Appendix A.

First published as part of AS C318-1958.
Revised and redesignated as AS 2081-1977.
AS 2081-1977 revised and redesignated in part as AS 2081.5-1988.
Jointly revised and designated AS/NZS 2081.5:2002.