IEC 60947-4-2:2011

Title
Abstract

IEC 60947-4-2:2011 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 does not exceed 1 000 V a.c. This standard characterizes a.c. semiconductor motor controllers and starters with and without bypass means. This third edition replaces the second edition published in 1999 and its Amendments 1 (2001) and 2 (2006). It is a technical revision. This edition includes the following significant technical changes with respect to the previous edition and its amendments:
- updated EMC normative references and associated requirements,
- new references to IEC 60947-1,
- marking of electronic relays without thermal memory,
- marking of tripping time at 0 °C ambient or below,
- new test requirements for limits of operation of time-delay overload relays,
- new classes of overload current withstand time,
- damp heat, salt mist, vibration and shock tests,
- short-circuit test in the smallest enclosure,
- update of the routine and sampling tests.
The contents of the corrigendum of July 2012 have been included in this copy.

This publication is to be read in conjunction with IEC 60947-1:2007.

Issue Date

2011-05-18

Category

POW

Included in IECEE System

2011-09-06

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DISCLAIMER: National differences

The National differences and Group differences, National Deviations and Special National conditions (SNC), are based solely on information provided to the Secretariat by the IECEE Member Bodies and/or NCBs and other sources. The IEC/IECEE is not responsible for, nor will it take any position related to, the accuracy or validity of the information provided. To verify the current status of this type of information, we recommend contacting the Member Body (MB) or National Certification Body (NCB) of the relevant country.

Group Differences are applicable for CENELEC member countries: Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

Group/Country

Reference

Last Modified

Differences

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Laboratory Name

City

Country

Responsible National Certification Body

Wien

Austria

Vienna

Austria

Arnhem

Netherlands

Berlin

Germany

Bonn

Germany

Kista

Sweden

Shanghai

China

Shanghai

China

Wuzhong District

China

Budapest

Hungary

Frankfurt

Germany

Northbrook, IL 60062

United States of America

Offenbach / Main

Germany

Ruian City

China

Jiaxing City

China

Id

Name

City

Country

13338

Beijing 100070

China

13360

Arnhem

Netherlands

13371

Kista

Sweden

13343

Fontenay-Aux-Roses

France

13332

Vienna

Austria

13349

Budapest

Hungary

13346

München

Germany

13340

Ballerup

Denmark

13344

Offenbach / Main

Germany