IEC 60947-8:2003/AMD2:2011
低压开关设备和控制设备.第8部分:旋转电机用嵌入式热保护(PTC)控制装置

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

被代替

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标准号

IEC 60947-8:2003/AMD2:2011

发布

2011年

发布单位

国际电工委员会

替代标准

IEC 60947-8:2021

当前最新

IEC 60947-8:2021

 

 

被代替标准

IEC 17B/1732/FDIS:2011

适用范围

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.The PT100 detectors are covered by IEC 60751@ where the resistor values are given according to the temperatures of the detector. The present rules lay down the characteristics of association of this particular positive temperature coefficient thermistor detector and its associated control unit (designated ??Mark A detector?? and ??Mark A control unit??)@ when they are used in thermal protection systems.NOTE It is not possible to specify all the requirements for the operating characteristics of a control unit@ as they are dependent on some aspects of the thermal detectors. Some aspects of the requirements of the thermal protector system can only be specified when account is taken of the characteristics of the rotating machine to be protected and the method of installation of the detector within the machine.For these reasons@ for each characteristic it is necessary to specify who is responsible for stating the required values and who is responsible for compliance with the requirement and for carrying out any confirmatory test.

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