IEC 60947-4-1:2009+AMD1:2012 CSV

FOREWORD
INTRODUCTION (to amendment 1)
1 Scope and object
2 Normative references
3 Terms, definitions, symbols and abbreviations
4 Classification
5 Characteristics of contactors and starters
6 Product information
7 Normal service, mounting and transport conditions
8 Constructional and performance requirements
9 Tests
Annex A (normative) - Marking and identification of
        terminals of contactors and associated
        overload relays
Annex B (normative) - Special tests
Annex C - Void
Annex D (informative) - Items subject to agreement
        between manufacturer and user
Annex E (informative) - Void
Annex F (normative) - Requirements for auxiliary
        contact linked with power contact (mirror
        contact)
Annex G (informative) - Rated operational currents and
        rated operational powers of switching devices
        for electrical motors
Annex H (normative) - Extended functions to electronic
        overload relays
Annex I (informative) - AC1 contactors for use with
        semiconductor controlled motor loads
Annex J - Void
Annex K (normative) - Procedure to determine data for
        electromechanical contactors used in functional
        safety applications
Bibliography

IEC 60947-4-1:2009+A1:2012 applies to the types of equipment 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 forms part of the installation but not necessarily of the contactor or the starter. This third edition replaces the second edition published in 2000 and its Amendments 1 (2002) and 2 (2005). It is a technical revision. This edition includes the following significant technical changes with respect to the previous edition (2000) and its Amendments 1 (2002) and 2 (2005):
- deletion of the test at -5 °C and +20 °C for thermal overload relays that are not compensated for ambient air temperature;
- addition of conditions of the tests according to Annex Q of IEC 60947-1;
- EMC tests: clarification of acceptance criteria and alignment with IEC 60947-1 for fast transient severity level;
- Annex B, test for Icd: modification of the duration of the dielectric test voltage from 5 s to 60 s;
- Annex B, electrical durability: improvement of the statistical aspects;
- Annex H: clarification and introduction of new extended functions within electronic overload relays;
- Annex K, procedure to determine data for electromechanical contactors used in functional safety applications: creation of this new annex. This standard shall be read in conjunction with IEC 60947-1, Low voltage switchgear and controlgear - Part 1: General rules. The provisions of the general rules are applicable to this standard, where specifically called for.This consolidated version consists of the third edition (2009) and its amendment 1 (2012). Therefore, no need to order amendment in addition to this publication.

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