IEC 60947-8 Ed. 1.1 b:2006

Low-voltage switchgear and controlgear - Part 8: Control units for built-in thermal protection (PTC) for rotating electrical machines CONSOLIDATED EDITION

International Electrotechnical Commission , 11/24/2006

Publisher: IEC

File Format: PDF

$177.00$354.00


This part of IEC 60947 specifies rules for control units, which perform the switching functions in response to the thermal detectors incorporated in rotating electrical machines according to IEC 60034-11, and the industrial application. It specifies rules for that type of system comprising a positive temperature coefficient (PTC) thermistor detector having particular characteristics, and its associated control unit.

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