ljh809809 发表于 2015-10-23 13:41

IEC 60884-1 clause 12.3.11 如何理解?

The screwless terminals alreadysubjected to the determination of the voltage drop specified in the previoustest a) are tested as follows.During the test, a current equal tothe test current value given in table 10 is passed.The whole test arrangement,including the conductors, shall not be moved until the measurements of thevoltage drop have been completed.The terminals are subjected to 192temperature cycles, each cycle having a duration ofapproximately 1 h and carried out asfollows:– the current flows forapproximately 30 min;– for a further period ofapproximately 30 min no current flows.
问题1:5个无螺纹端子可以同时测电压降吗?还是必须一个一个测?问题2:每个周期的持续时间为1h,并应按如下程序进行:----通电流约30 min;;----随后,断电约30min
这个时间如何控制?
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