IEC 60947-4-2 Ed. 3.0 b:2011

Description

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.

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

Product Details

Edition:

3.0

Published:

05/18/2011

Number of Pages:

198

File Size:

1 file , 1.3 MB

Note:

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