Abstract

Applies to a.c. contactors and/or contactor-based motor-starters designed for indoor installation and operation at frequencies up to and including 60 Hz on systems having voltages above 1000 V but not exceeding 12000 V. In particular applies to three-pole contactors and starters for use in three-phase systems and single-pole contactors and starters for use in single-phase systems. Contactors and/or starters dealt with in this Standard are not normally designed to interrupt short-circuit currents. This Standard is also applicable to the operating devices of contactors and to their auxiliary equipment. This Standard is identical with and has been reproduced from IEC 60470:2000.
RECONFIRMATION NOTICE
Technical Committee EL-007 has reviewed the content of this publication and in
accordance with Standards Australia procedures for reconfirmation, it has been
determined that the publication is still valid and does not require change.
Reconfirmed documents cannot be amended, but may be formally revised and a new
edition published.
Certain documents referenced in the publication may have been amended since the
original date of publication. Users are advised to ensure that they are using the latest
versions of such documents as appropriate, unless advised otherwise in this
Reconfirmation Notice.
Approved for reconfirmation in accordance with Standards Australia procedures for
reconfirmation on 18 May 2015.
Reconfirmed documents cannot be amended, but may be formally revised and a new
edition published.
The following are represented on Technical Committee EL-007:
Ausgrid
Australian Industry Group
Energy Networks Association
Engineers Australia
The University of New South Wales

Scope

This International Standard is applicable to a.c. contactors and/or contactor-based motor-starters designed for indoor installation and operation at frequencies up to and including 60 Hz on systems having voltages above 1 000 V but not exceeding 12 000 V.
It is applicable only to three-pole contactors and starters for use in three-phase systems, and single-pole contactors and starters for use in single-phase systems. Two-pole contactors and starters for use in single-phase systems are subject to agreement between manufacturer and user.
Contactors and/or starters dealt with in this standard are not normally designed to interrupt short-circuit currents. Therefore, suitable short-circuit protection (see 3.4.110.12 and note 2 below) forms 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 (SCPD);
– 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, for example combination starters (see 3.4.110.9), are rated as units.
Contactors intended for closing and opening electric circuits and, if combined with suitable relays, for protecting these circuits against operating overloads which may occur therein, are covered in this standard.
This standard is also applicable to the operating devices of contactors and to their auxiliary equipment.
Motor-starters intended to start and accelerate motors to normal speed, to ensure continuous operation of motors, to switch off the supply from the motor and to provide means for the protection of motors and associated circuits against operating overloads are dealt with.
Motor-starter types included are
– direct-on-line starters;
– reversing starters;
– two-direction starters;
– reduced kVA (voltage) starters;
– auto-transformer starters;
– rheostatic starters;
– reactor starters.
Starters, the operation of which depends on thermal electrical relays for motor protection complying with IEC 60255-8, or motor-incorporated thermal protective devices dealt with in IEC 60034-11, do not necessarily meet all the relevant requirements of this standard.
Overload relays for starters, including those based on solid-state technology, are covered by this standard.
This standard does not apply to
– circuit-breaker-based motor-starters;
– single-pole operation of multi-pole contactors or starters;
– two-step auto-transformer starters designed for continuous operation in the starting position;
– unbalanced rheostatic rotor starters, i.e. where the resistances do not have the same value in all phases;
– equipment designed not only for starting, but also for adjustment of speed;
– liquid starters and those of the ‘liquid-vapour’ type;
– semiconductor contactors and starters making use of semiconductor contactors in the main circuit;
– rheostatic stator starters;
– contactors or starters designed for special applications.
This standard does not deal with components contained in contactors and contactor-based motor-starters, for which individual specifications exist.
NOTE 1 Thermal electrical relays are covered by IEC 60255-8.
NOTE 2 High-voltage current-limiting fuses are covered by IEC 60282-1 and IEC 60644.
NOTE 3 Metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV are covered by IEC 60298.
NOTE 4 Disconnectors and earthing switches are covered by IEC 60129.
NOTE 5 High-voltage switches above 1 kV and less than 52 kV are covered by IEC 60265-1.
The object of this standard is to state
a) the characteristics of contactors and starters and associated equipment;
b) the conditions with which contactors or starters shall comply with reference to:
1) their operation and behaviour,
2) their dielectric properties,
3) the degrees of protection provided by their enclosures, where applicable,
4) their construction,
5) for combinations, interactions between the various components, for example SCPD less co-ordination;
c) the tests intended for confirming that these conditions have been met, and the methods to be adopted for these tests;
d) the information to be given with the equipment or in the manufacturer's literature.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Standards Australia
ProductNote	Reconfirmed 18/05/2015. This standard as been reconfirmed in Australia in 2015 and remains current in New Zealand. Reconfirmation Notice 18/05/2015
Pages
ISBN
Committee	EL-007
Supersedes	AS 2232.1-1979 DR 01039 CP AS 1864-1976