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IEC 60947-4-2

Low-Voltage Switchgear and Controlgear - Part 4-2: Contactors and Motor-Starters - AC Semiconductor Motor Controllers and Starters

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Organization: IEC
Publication Date: 1 March 2002
Status: inactive
Page Count: 180
ICS Code (Low voltage switchgear and controlgear): 29.130.20
scope:

Scope and object

This standard applies to controllers and starters, which may include a series mechanical switching device, intended to be connected to circuits, the rated voltage of which does not exceed 1 000 V a.c.

This standard characterizes controllers and starters with and without bypass means.

Controllers and starters dealt with in this standard are not normally designed to interrupt short-circuit currents. Therefore, suitable short-circuit protection (see 8.2.5) should form part of the installation, but not necessarily of the controller or starter.

In this context, this standard gives requirements for controllers and starters associated with separate short-circuit protective devices.

This standard does not apply to:

- continuous operation of a.c. motors at motor speeds other than the normal speed;

- semiconductor equipment, including semiconductor contactors (see 2.2.13 of IEC 60947-1) controlling non-motor loads;

- electronic a.c. power controllers covered by IEC 60146.

Contactors and control circuit devices used in controllers and starters should comply with the requirements of their relevant product standard. Where mechanical switching devices are used, they should meet the requirements of their own IEC product standard, and the additional requirements of this standard.

The object of this standard is to state as follows:

- the characteristics of controllers and starters and associated equipment;

- the conditions with which controllers and starters shall comply with reference to:

a) their operation and behaviour;

b) their dielectric properties;

c) the degrees of protection provided by their enclosures where applicable;

d) their construction;

- the tests intended for confirming that these conditions have been met, and the methods to be adopted for these tests;

- the information to be given with the equipment, or in the manufacturer's literature.

Document History

June 1, 2020
Low-voltage switchgear and controlgear – Part 4-2: Contactors and motor-starters – Semiconductor motor controllers, starters and soft-starters
This part of IEC 60947 applies to semiconductor motor controllers, starters and soft-starters which can include a series mechanical switching device, intended to be connected to circuits the rated...
July 1, 2012
Low-voltage switchgear and controlgear – Part 4-2: Contactors and motor-starters – AC semiconductor motor controllers and starters
A description is not available for this item.
May 1, 2011
Low-voltage switchgear and controlgear – Part 4-2: Contactors and motor-starters – AC semiconductor motor controllers and starters
This standard applies to a.c. semiconductor motor controllers and starters, which may include a series mechanical switching device, intended to be connected to circuits, the rated voltage of which...
February 1, 2007
Low-voltage switchgear and controlgear – Part 4-2: Contactors and motor-starters – AC semiconductor motor controllers and starters
Scope and object This standard applies to controllers and starters, which may include a series mechanical switching device, intended to be connected to circuits, the rated voltage of which does not...
IEC 60947-4-2
March 1, 2002
Low-Voltage Switchgear and Controlgear - Part 4-2: Contactors and Motor-Starters - AC Semiconductor Motor Controllers and Starters
Scope and object This standard applies to controllers and starters, which may include a series mechanical switching device, intended to be connected to circuits, the rated voltage of which does not...
March 1, 2002
Low-Voltage Switchgear and Controlgear - Part 4-2: Contactors and Motor-Starters - AC Semiconductor Motor Controllers and Starters
Scope and object This standard applies to controllers and starters, which may include a series mechanical switching device, intended to be connected to circuits, the rated voltage of which does not...
December 1, 1999
Low-Voltage Switchgear and Controlgear - Part 4-2: Contactors and Motor-Starters - AC Semiconductor Motor Controllers and Starters
A description is not available for this item.
December 1, 1999
Low-Voltage Switchgear and Controlgear - Part 4-2: Contactors and Motor-Starters - AC Semiconductor Motor Controllers and Starters
A description is not available for this item.
December 1, 1999
Low-Voltage Switchgear and Controlgear - Part 4-2: Contactors and Motor-Starters - AC Semiconductor Motor Controllers and Starters
A description is not available for this item.
March 1, 1999
Low-Voltage Switchgear and Controlgear Part 4: Contactors and Motor-Starters Section 2: AC Semiconductor Motor Controllers and Starters
A description is not available for this item.
August 1, 1998
Amendment 2 Low-voltage switchgear and controlgear – Part 4: Contactors and motor-starters – Section 2: AC semiconductor motor controllers and starters
A description is not available for this item.
April 1, 1997
Amendement 1 Appareillage à basse tension Partie 4: Contacteurs et démarreurs de moteurs Section 2: Gradateurs et démarreurs à semiconducteurs de moteurs à courant alternatif
A description is not available for this item.
November 1, 1995
Low-Voltage Switchgear and Controlgear Part 4: Contactors and Motor-Starters Section 2: AC Semiconductor Motor Controllers and Starters
A description is not available for this item.

References

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