AS/NZS 3947.6.1:2001

1 - AS/NZS 3947.6.1:2001 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - MULTIPLE FUNCTION EQUIPMENT-AUTOMATIC TRANSFER SWITCHING EQUIPM
4 - PREFACE
6 - CONTENTS
9 - 1 General
9 - 1.1 Scope
9 - 1.2 Object
10 - 1.3 Normative references
11 - 2 Definitions
11 - 2.1 Switching devices
11 - 2.1.1 Transfer switching device (transfer switch)
11 - 2.1.2 Automatic transfer switching equipment (ATSE)
11 - 2.2 Operation of ATSE
11 - 2.2.1 Operating sequence
11 - 2.2.2 Monitored supply deviation
12 - 2.2.3 Operating times
12 - 2.3 Main contact positions
12 - 2.3.1 Normal position
12 - 2.3.2 Alternative position
12 - 2.3.3 Off position
12 - 3 Classification
13 - 4 Characteristics
13 - 4.1 Summary of characteristics
13 - 4.2 Type of equipment
13 - 4.3 Rated and limiting values for the main circuit
13 - 4.3.1 Rated voltages
13 - 4.3.2 Rated operational current
13 - 4.3.3 Rated frequency
13 - 4.3.4 Uninterrupted duty
14 - 4.3.5 Rated making and breaking capacities
14 - 4.3.6 Short-circuit characteristics
15 - 4.4 Utilization category
16 - 4.5 Control circuits
16 - 4.5.1 Electro-mechanical devices controlling the main circuit
16 - 4.5.2 Transfer control devices
16 - 4.6 Auxiliary circuits
16 - 4.7 (Vacant)
16 - 4.8 (Vacant)
16 - 4.9 Switching overvoltages
17 - 5 Product information
17 - 5.1 Nature of information
17 - 5.2 Marking
17 - 5.3 Instructions for installation, operation and maintenance
18 - 6 Normal service, mounting and transport conditions
18 - 7 Constructional and performance requirements
18 - 7.1 Constructional requirements
18 - 7.1.3 Clearances and creepage distances
18 - 7.2 Performance requirements
18 - 7.2.1 Operating conditions
22 - 7.2.2 Temperature rise
22 - 7.2.3 Dielectric properties
22 - 7.2.4 Ability to make and break under no-load, normal load and overload conditions
22 - 7.2.5 Ability to make and break under short-circuit conditions
23 - 7.2.6 Switching overvoltages
23 - 7.3 Electromagnetic compatibility (EMC)
23 - 7.3.1 General
24 - 7.3.2 Immunity
24 - 7.3.3 Emission
24 - 8 Tests
24 - 8.1 Kinds of tests
24 - 8.1.1 General
25 - 8.1.2 Type tests
25 - 8.1.3 Routine tests
25 - 8.1.4 Sampling tests
25 - 8.2 Compliance with constructional requirements
25 - 8.3 Performance
25 - 8.3.1 Test sequences
25 - 8.3.2 General test conditions
26 - 8.3.3 Performance under no-load, normal load and overload conditions
33 - 8.3.4 Performance under short-circuit conditions
34 - 8.4 Routine tests
35 - 8.5 EMC tests
35 - 8.5.1 General
35 - 8.5.2 Immunity
36 - 8.5.3 Emission
38 - Annex A - Assignment of utilization categories based on results of tests
39 - Annex B - Clearances and creepage distances
39 - Introduction
39 - B.1 Scope
39 - B.2 Definitions
39 - B.3 General
40 - B.4 Determination of clearances and creepage distances
40 - B.5 Minimum values of clearances and creepage distances
42 - Annex C - Items subject to agreement between manufacturer and user

Applies to automatic transfer switching equipment to be used in emergency power systems with interruption of the supply to the load during transfer, the rated voltage of which does not exceed 100 V a.c. or 1500 volt a.c. Specifies characteristics of equipment, conditions with which the equipment must comply, tests intended to confirm these conditions have been met and data to be marked on the equipment and/or provided by the manufacturer. This Standard is identical with and has been reproduced from IEC 60947-6-1:1989 plus Corrigendum:1991 plus Amendment 1:1994 and Amendment 2:1997.

This standard applies to Automatic Transfer Switching Equipment (ATSE) to be used in emergency power systems with interruption of the supply to the load during transfer, the rated voltage of which does not exceed 1 000 V a.c. or 1 500 V d.c. It covers ATSE provided with or without an enclosure.Devices necessary for the control (e.g. control switches, ...) and the protection (e.g. circuit-breakers, ...) of an ATSE shall comply with the requirements of the relevant IEC standards.ATSE used only for emergency lighting may be subject to specific rules and/or legal requirements and are not, therefore, covered by this standard.

First published as AS 3639.1-1989.
Revised and redesignated as AS 3947.6.1-1996.
Jointly revised and designated as AS/NZS 3947.6.1:2001.