• AS/NZS 3947.4.1:2001

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    Low-voltage switchgear and controlgear Contactors and motor-starters - Electromechanical contactors and motor-starters

    Available format(s):  Hardcopy, PDF 1 User, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Superseded date:  06-30-2017

    Language(s):  English

    Published date:  10-12-2001

    Publisher:  Standards Australia

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    Table of Contents - (Show below) - (Hide below)

    1 - AS/NZS 3947.4.1:2001 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - CONTACTORS AND MOTOR-STARTERS-ELECTROMECHANICAL CONTACTORS AND
    4 - PREFACE
    6 - CONTENTS
    9 - 1 Scope and object
    9 - 1.1 AC and d.c. contactors
    10 - 1.2 AC motor-starters
    10 - 1.2.1 Direct-on-line (full voltage) a.c. starters
    10 - 1.2.2 Reduced voltage a.c. starters
    11 - 1.2.3 Rheostatic rotor starters
    11 - 1.3 Exclusions
    11 - 1.4 Object
    12 - 2 Normative references
    14 - 3 Definitions
    14 - 3.1 Definitions concerning contactors
    14 - 3.1.1 contactor (mechanical)
    14 - 3.1.2 electromagnetic contactor
    14 - 3.1.3 pneumatic contactor
    14 - 3.1.4 electro-pneumatic contactor
    15 - 3.1.5 latched contactor
    15 - 3.1.6 vacuum contactor (or starter)
    15 - 3.1.7 position of rest (of a contactor)
    15 - 3.2 Definitions concerning starters
    15 - 3.2.1 starter
    15 - 3.2.2 direct-on-line starter
    15 - 3.2.3 reversing starter
    15 - 3.2.4 two-direction starter
    15 - 3.2.5 reduced voltage starter
    16 - 3.2.6 rheostatic starter
    16 - 3.2.7 combination starter
    16 - 3.2.8 protected starter
    16 - 3.2.9 manual starter
    16 - 3.2.10 electromagnetic starter
    17 - 3.2.11 motor-operated starter
    17 - 3.2.12 pneumatic starter
    17 - 3.2.13 electro-pneumatic starter
    17 - 3.2.14 single-step starter
    17 - 3.2.15 two-step starter
    17 - 3.2.16 n-step starter
    17 - 3.2.17 phase loss sensitive thermal overload relay or release
    17 - 3.2.18 under-current (under-voltage) relay or release
    17 - 3.2.19 starting time (of a rheostatic starter)
    17 - 3.2.20 starting time (of an auto-transformer starter)
    18 - 3.2.21 open transition (with an auto-transformer starter or star-delta starter)
    18 - 3.2.22 closed transition (with an auto-transformer starter or star-delta starter)
    18 - 3.2.23 inching (jogging)
    18 - 3.2.24 plugging
    18 - 3.3 Characteristic quantities
    18 - 3.3.1 Transient recovery voltage (abbreviation: TRV)
    18 - 4 Classification
    18 - 5 Characteristics of contactors and starters
    18 - 5.1 Summary of characteristics
    19 - 5.2 Type of equipment
    19 - 5.2.1 Kind of equipment
    19 - 5.2.2 Number of poles
    19 - 5.2.3 Kind of current (a.c. or d.c.)
    19 - 5.2.4 Interrupting medium (air, oil, gas, vacuum, etc.)
    19 - 5.2.5 Operating conditions of the equipment
    19 - 5.3 Rated and limiting values for main circuits
    19 - 5.3.1 Rated voltages
    21 - 5.3.2 Currents or powers
    22 - 5.3.3 Rated frequency
    22 - 5.3.4 Rated duties
    23 - 5.3.5 Normal load and overload characteristics
    26 - 5.3.6 Rated conditional short-circuit current
    26 - 5.4 Utilization category
    26 - 5.4.1 Assignment of utilization categories based on the results of tests
    28 - 5.5 Control circuits
    28 - 5.6 Auxiliary circuits
    28 - 5.7 Characteristics of relays and releases (overload relays)
    28 - 5.7.1 Summary of characteristics
    28 - 5.7.2 Types of relay or release
    28 - 5.7.3 Characteristic values
    29 - 5.7.4 Designation and current settings of overload relays
    29 - 5.7.5 Time-current characteristics of overload relays
    30 - 5.7.6 Influence of ambient air temperature
    30 - 5.8 Co-ordination with short-circuit protective devices
    30 - 5.9 Switching overvoltages
    30 - 5.10 Types and characteristics of automatic change-over devices and automatic acceleration control devices
    30 - 5.10.1 Types
    30 - 5.10.2 Characteristics
    31 - 5.11 Types and characteristics of auto-transformers for two-step auto-transformer starters
    31 - 5.12 Types and characteristics of starting resistors for rheostatic rotor starters
    31 - 6 Product information
    31 - 6.1 Nature of information
    31 - 6.1.1 Identification
    32 - 6.1.2 Characteristics, basic rated values and utilization
    33 - 6.2 Marking
    33 - 6.3 Instructions for installation, operation and maintenance
    33 - 7 Normal service, mounting and transport conditions
    34 - 8 Constructional and performance requirements
    34 - 8.1 Constructional requirements
    34 - 8.1.1 Materials
    34 - 8.1.2 Current-carrying parts and their connections
    34 - 8.1.3 Clearances and creepage distances
    34 - 8.1.4 Actuator
    34 - 8.1.5 Indication of the contact position
    34 - 8.1.6 Additional safety requirements for equipment with isolating function
    34 - 8.1.7 Terminals
    35 - 8.1.8 Additional requirements for contactors or starters provided with a neutral pole
    35 - 8.1.9 Provisions for earthing
    35 - 8.1.10 Enclosures for equipment
    35 - 8.1.11 Degrees of protection of enclosed contactors and starters
    35 - 8.2 Performance requirements
    35 - 8.2.1 Operating conditions
    38 - 8.2.2 Temperature rise
    40 - 8.2.3 Dielectric properties
    40 - 8.2.4 Normal load and overload performance requirements
    45 - 8.2.5 Co-ordination with short- circuit protective devices
    46 - 8.2.6 Switching overvoltages
    46 - 8.2.7 Additional requirements for combination starters and protected starters suitable for isolation
    46 - 8.3 Electromagnetic compatibility (EMC)
    46 - 8.3.1 General
    46 - 8.3.2 Immunity
    47 - 8.3.3 Emission
    47 - 9 Tests
    47 - 9.1 Kinds of test
    47 - 9.1.1 General
    47 - 9.1.2 Type tests
    48 - 9.1.3 Routine tests
    48 - 9.1.4 Sampling tests
    48 - 9.1.5 Special tests
    48 - 9.2 Compliance with constructional requirements
    49 - 9.3 Compliance with performance requirements
    49 - 9.3.1 Test sequences
    49 - 9.3.2 General test conditions
    49 - 9.3.3 Performance under no load, normal load and overload conditions
    58 - 9.3.4 Performance under short-circuit conditions
    62 - 9.3.5 Overload current withstand capability of contactors
    63 - 9.3.6 Routine tests and sampling tests
    64 - 9.4 EMC Tests
    64 - 9.4.1 General
    64 - 9.4.2 Immunity
    65 - 9.4.3 Emission
    74 - Annex A - Marking and identification of terminals of contactors and associated overload relays
    74 - A.1 General
    74 - A.2 Marking and identification of terminals of contactors
    77 - A.3 Marking and identification of terminals of overload relays
    78 - Annex B - Special tests
    78 - B.1 General
    78 - B.2 Mechanical durability
    80 - B.3 Electrical durability
    81 - B.4 Co-ordination at the crossover current between the starter and associated SCPD
    86 - Annex C - Clearances and creepage distances for low-voltage contactors and starters
    86 - Introduction
    86 - C.1 Scope
    86 - C.2 Definitions
    86 - C.3 General
    87 - C.4 Determination of clearances and creepage distances
    87 - C.5 Minimum values of clearances and creepage distances
    89 - Annex D - Items subject to agreement between manufacturer and user

    Abstract - (Show below) - (Hide below)

    Applies to a.c. and d.c. contactors and a.c. motor-starters whose main contacts are intended to be connected to circuits, the rated voltage of which does not exceed 1000 volt a.c. or 1500 volt d.c. Specifies requirements for contactors associated with overload or short-circuit protective devices, starters associated with short-circuit and integrated overload protective devices and contactors or starters combined with their own short-circuit protective devices. This Standard is identical to and reproduced from IEC 60947-4-1:2000.

    Scope - (Show below) - (Hide below)

    This part of IEC 60947 applies to the types of equipment listed in 1.1 and 1.2 whose main contacts are intended to be connected to circuits the rated voltage of which does not exceed 1 000 V a.c. or 1 500 V d.c.Starters and/or contactors dealt with in this standard are not normally designed to interrupt short-circuit currents. Therefore, suitable short-circuit protection (see 9.3.4) shall form part of the installation but not necessarily of the contactor or the starter.In this context, this standard gives requirements for: contactors associated with overload and/or short-circuit protective devices; starters associated with separate short-circuit protective devices and/or with separate short-circuit and integrated overload protective devices; contactors or starters combined, under specified conditions, with their own short-circuit protective devices. Such combinations, e.g. combination starters (see 3.2.7) or protected starters (see 3.2.8) are rated as units.Circuit-breakers and fuse-combination units used as short-circuit protective devices in combination starters and in protected starters shall comply with the requirements of IEC 60947-2 and IEC 60947-3, as the case may be.Equipment covered by this standard is as follows.

    General Product Information - (Show below) - (Hide below)

    Committee EL-006
    Document Type Standard
    Publisher Standards Australia
    Status Superseded
    Superseded By
    Supersedes
    Under Revision

    History - (Show below) - (Hide below)

    AS 3947.4.1 first published in part as AS C165-1961.AS C63 first published 1965.AS C364 first published 1967.AS C381 first published 1967.AS C63-1965 revised and redesignated AS 1029-1971.AS C165-1961 revised and redesignated AS 1023.2-1972.AS C364-1967 revised and redesignated in part as AS 1202.1-1972.AS 1202-1972 redesignated AS 1202.1-1972.Second edition AS 1029-1974.AS C381-1967 revised and redesignated AS 1202.2-1976, AS 1202.3-1976 and AS 1202.4-1976.Second edition AS 1202.1-1981.AS 1029-1974 revised and redesignated in part as AS 1029.1-1982.Second edition AS 1029.1-1985.Second edition AS 1023.2-1989.AS 1023.2-1989, AS 1029.1-1985, AS 1201.1-1981, AS 1202.2-1976, AS 1202.3-1976 and AS 1202.4-1976 revised, amalgamated and redesignated AS 3947.4.1-1995.Second edition 2001. AS 3947.4.1 first published in part as AS C165-1961. AS C63 first published 1965. AS C364 first published 1967. AS C381 first published 1967. AS C63-1965 revised and redesignated AS 1029-1971. AS C165-1961 revised and redesignated AS 1023.2-1972. AS C364-1967 revised and redesignated in part as AS 1202.1-1972. AS 1202-1972 redesignated AS 1202.1-1972. Second edition AS 1029-1974. AS C381-1967 revised and redesignated AS 1202.2-1976, AS 1202.3-1976 and AS 1202.4-1976. Second edition AS 1202.1-1981. AS 1029-1974 revised and redesignated in part as AS 1029.1-1982. Second edition AS 1029.1-1985. Second edition AS 1023.2-1989. AS 1023.2-1989, AS 1029.1-1985, AS 1201.1-1981, AS 1202.2-1976, AS 1202.3-1976 and AS 1202.4-1976 revised, amalgamated and redesignated AS 3947.4.1-1995. Second edition 2001.

    Standards Referenced By This Book - (Show below) - (Hide below)

    AS/NZS 61000.4.5:1999 Electromagnetic compatibility (EMC) Testing and measurement techniques - Surge immunity test
    AS 2374.1-1997 Power transformers General
    AS 1852.441-1985 International electrotechnical vocabulary - Switchgear, controlgear and fuses
    AS/NZS 3947.1:2001 Low-voltage switchgear and controlgear General rules
    AS/NZS 3947.3:2001 Low-voltage switchgear and controlgear Switches, disconnectors, switch-disconnectors and fuse-combination units
    AS/NZS 3947.2:2002 Low-voltage switchgear and controlgear Circuit-breakers
    AS/NZS 60269.1:2000 Low-voltage fuses General requirements
    AS/NZS 3947.5.1:2000 Low-voltage switchgear and controlgear Control circuit devices and switching elements - Electromechanical control circuit devices
    AS/NZS 61000.4.3:2006 Electromagnetic compatibility (EMC) Testing and measurement techniques - Radiated, radio-frequency, electromagnetic field immunity test
    AS 1359.101-1997 Rotating electrical machines - General requirements - Rating and performance
    AS/NZS 4695.112:1996 Fire hazard testing of electrotechnical products Method for determining the comparative and the proof tracking indices of solid insulating materials under moist conditions
    AS/NZS 60269.2.0:2000 Low-voltage fuses Supplementary requirements for fuses for use by authorized persons (fuses mainly for industrial application)
    AS 3947.2-1997 Low-voltage switchgear and controlgear - Circuit-breakers
    AS 2768-1985 Electrical insulating materials - Evaluation and classification based on thermal endurance
    AS/NZS 61000.4.3:1999 Electromagnetic compatibility (EMC) Testing and measurement techniques - Radiated radio-frequency electromagnetic field immunity test
    AS/NZS 61000.4.5:2006 Electromagnetic compatibility (EMC) Testing and measurement techniques - Surge immunity test

    Standards Referencing This Book - (Show below) - (Hide below)

    AS/NZS 3947.3:2001 Low-voltage switchgear and controlgear Switches, disconnectors, switch-disconnectors and fuse-combination units
    AS/NZS 3947.6.1:2001 Low-voltage switchgear and controlgear Multiple Function equipment - Automatic transfer switching equipment
    AS 2941-2002 Fixed fire protection installations - Pumpset systems
    AS/NZS 3947.2:2002 Low-voltage switchgear and controlgear Circuit-breakers
    AS 1418.1-2002 Cranes, hoists and winches General requirements
    AS 1735.5-2003 Lifts, escalators and moving walks Lifts, escalators and moving walks
    AS/NZS 3439.1:2002 Low-voltage switchgear and controlgear assemblies Type-tested and partially type tested assemblies (IEC 60439-1:1999 MOD)
    AS/NZS 3000:2018 (Unamended Hardcopy + Amendments) Electrical installations (known as the Australian/New Zealand Wiring Rules)
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