NEN EN IEC 60947-8 : 2003 AMD 2 2012
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LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 8: CONTROL UNITS FOR BUILT-IN THERMAL PROTECTION (PTC) FOR ROTATING ELECTRICAL MACHINES
12-01-2013
Defines 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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