
Low-voltage Switchgear And Controlgear - Part 8: Control Units For Built-in Thermal Protection (ptc) For Rotating Electrical Machines
出版:Nederlands Normalisatie Instituut

专家解读视频
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.
IEC 60947-8 Ed. 1.1 - Identical