插座温升测试短路连接问题
做温升短路时,L-N.N-E.L-E短路需3次,那如果把L-N-E3极一起串联短路做温升测试是否可行? 插座温升短路的依据条款先晒出来才好讨论啊 异常测试,单一异常吧 沒試過呢?有這樣測試嗎?是否有條款? "For accessories having three poles or more, the current during the test shall be passed through the phase contacts, where applicable. In addition, separate tests shall be made passing the current through the neutral contact, if any, and the adjacent phase contact and through the earthing contact, if any, and the nearest phase contact. For the purpose of this test, earthing contacts, irrespective of their number, are considered as one pole."请问各位大神,这段话怎么理解? 今天下午自己做了一下测试,发现L-N-E 3极串联短接测的温度比L-N/N-E短接测得温度高很多。 短接线足够长,对温升区热影响可忽略,我觉得没有什么区别 短接线要有足够的截面积,接触电阻要足够的小 回复楼上两位,标准是对线长(给出了最小长度)与线径是有要求的。 三个短接,整个线路的电阻肯定比两两短接要大,温升肯定会比较大。像德式插座是用一个标准的插头插进去进行短接。
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