AS/NZS 3947.6.2:2001

1 - AS/NZS 3947.6.2:2001 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - MULTIPLE FUNCTION EQUIPMENT-CONTROL AND PROTECTIVE SWITCHING DE
4 - PREFACE
6 - CONTENTS
9 - 1 Scope and object
9 - 2 Normative references
11 - 3 Definitions
11 - 3.1 Control and protective switching device (or equipment) (CPS)
11 - 3.2 CPS suitable for isolation
11 - 3.3 CPS for motor control and protection
11 - 3.3.1 Direct-on-line CPS
11 - 3.3.2 Reversing CPS
11 - 3.3.3 Two-direction CPS
11 - 3.4 Opening time
12 - 3.5 Phase loss sensitive relay or release (for motor protection)
12 - 4 Classification
12 - 5 Characteristics
12 - 5.1 Summary of characteristics
12 - 5.2 Type of CPS
12 - 5.2.1 Number of poles
12 - 5.2.2 Kind of current (a.c. or d.c.)
12 - 5.2.3 Method of operation
12 - 5.2.4 Method of control
12 - 5.2.5 Method of resetting after overload
13 - 5.2.6 Method of rearming after short-circuit
13 - 5.3 Rated and limiting values of the main circuit
13 - 5.3.1 Rated voltages
13 - 5.3.2 Currents and powers
13 - 5.3.3 Rated frequency
13 - 5.3.4 Rated duties
13 - 5.3.5 Normal load and overload characteristics
14 - 5.3.6 Short circuit characteristics
14 - 5.4 Utilization categories
14 - 5.4.1 Standard utilization categories
15 - 5.4.2 Assignment of utilization categories based on the results of tests
16 - 5.4.3 Application of utilization categories for motor control duty
16 - 5.5 Control circuits
16 - 5.6 Auxiliary circuits
17 - 5.7 Relays or releases
17 - 5.7.1 Types of relays or releases
17 - 5.7.2 Characteristic values
18 - 5.7.3 Designation and current setting of overload relays or releases
18 - 5.7.4 Time current characteristics of over current relays or releases
18 - 5.7.5 Influence of ambient air temperature
18 - 5.8 Switching overvoltages
18 - 6 Product information
18 - 6.1 Nature of information
18 - 6.1.1 Identification
19 - 6.1.2 Characteristics
19 - 6.2 Marking
20 - 6.3 Instructions for installation, operation and maintenance
20 - 7 Normal service, mounting and transport conditions
20 - 8 Constructional and performance requirements
20 - 8.1 Constructional requirements
20 - 8.1.1 Materials
20 - 8.1.2 Current-carrying parts and their connections
20 - 8.1.3 Clearances and creepage distances
20 - 8.1.4 Actuator
20 - 8.1.5 Indication of the contact position
20 - 8.1.6 Additional safety requirements for CPSs suitable for isolation
21 - 8.1.7 Terminals
21 - 8.1.8 Additional requirements for CPSs provided with a neutral pole
21 - 8.1.9 Provisions for protective earthing
21 - 8.1.10 Enclosures for CPSs
21 - 8.2 Performance requirements
21 - 8.2.1 Operating conditions
25 - 8.2.2 Temperature rise
27 - 8.2.3 Dielectric properties
27 - 8.2.4 Performance under no load, normal load and overload conditions
32 - 8.2.5 Ability to make, carry and break short-circuit currents
33 - 8.2.6 Switching overvoltages
33 - 8.3 Electromagnetic compatibility (EMC)
33 - 8.3.1 General
33 - 8.3.2 Immunity
34 - 8.3.3 Emission
34 - 9 Tests
34 - 9.1 Kind of tests
34 - 9.1.1 General
34 - 9.1.2 Type test
34 - 9.1.3 Routine tests
35 - 9.1.4 Sampling tests
35 - 9.1.5 Special tests
35 - 9.2 Compliance with constructional requirements
35 - 9.3 Compliance with performance requirements
35 - 9.3.1 Test sequences
35 - 9.3.2 General test conditions
36 - 9.3.3 Performance under no load, normal load and overload conditions
39 - 9.3.4 Performance under short-circuit conditions
41 - 9.3.5 EMC tests
50 - 9.4 Test sequences
52 - 9.4.1 Test Sequence I: Temperature-rise, operating limits, dielectric properties
54 - 9.4.2 Test Sequence II: Performance under normal load and overload conditions
55 - 9.4.3 Test sequence III: Operational performance before and after operating sequences ......
56 - 9.4.4 Test Sequence IV: Operational performance before and after operating sequences ....
57 - 9.4.5 Test Sequence V: Additional breaking capacity
57 - 9.4.6 Test Sequence VI: Additional test sequence for four-pole CPSs
58 - 9.4.7 Test Sequence VII: Additional test sequence for CPSs intended for use in an individual enclosure
58 - 9.4.7.3 Dielectric withstand verification
58 - 9.4.8 Test sequence VIII: EMC
58 - 9.5 Routine tests
58 - 9.5.1 General
59 - 9.5.2 Operation and operating limits
59 - 9.5.3 Dielectric tests
60 - 9.6 Sampling plans and test procedure
65 - Annex A - Special tests
65 - A.1 General
65 - A.2 Mechanical durability
67 - A.3 Electrical durability
68 - Annex B - Dielectric withstand verification
68 - B.1 Condition of the CPS for tests
68 - B.2 Application of the test voltage
69 - B.3 Value of test voltage
69 - B.4 Results to be obtained
70 - Annex C - Marking and identification of CPS terminals
70 - C.1 General
70 - C.2 Marking and identification of terminals of CPSs
74 - Annex D - Items subject to agreement between manufacturer and user

Applies to control and protective switching devices (or equipment) (CPS), the main contacts of which are intended to be connected to circuits of rated voltage not exceeding 1000 volt a.c or 1500 volt d.c. CPS are intended to provide both protective and control functions for remotely controlled circuits. They may also fulfil additional functions such as isolation. This Standard is identical with and has been reproduced from IEC 60947-6-2:1992 plus Amendment 1:1997 plus Amendment 2:1998.

This section of IEC 60947-6 applies to control and protective switching devices (or equipment) (CPS), the main contacts of which are intended to be connected to circuits of rated voltage not exceeding 1 000 V a.c. or 1 500 V d.c.CPSs are intended to provide both protective and control functions for circuits and are operated otherwise than by hand. They may also fulfill additional functions, such as isolation.The object of this section is to state: The characteristics of CPSs; The conditions with which CPSs shall comply with reference to their operation and behaviour, their dielectric properties, the degree of protection provided by their enclosure where applicable; The tests intended to verify that these conditions have been met, and the methods to be adopted for these tests; The information to be marked on or given with the CPSs.

First published as AS 3947.6.2-1996.
Jointly revised and designated as AS/NZS 3947.6.2:2001.