950中5.1.1基本要求
5.1.1基本要求中有如下句子:if it is clear from a study of the circuit diagrams of either PERMANENTLY CONNECTED
EQUIPMENT or PLUGGABLE EQUIPMENT TYPE B, that has a PROTECTIVE EARTHING CONDUCTOR, that the TOUCH CURRENT will exceed 3,5 mA r.m.s., but that the PROTECTIVE CONDUCTOR CURRENT will not exceed 5 % of input current, the tests of 5.1.5, 5.1.6 and 5.1.7 are not made.
该怎么分析接触电流有效值会超过3.5mA ,但保护电流不会超过输入电流的5% 呢?谢谢! B类设备接触电流可以超过3.5mA但是不能超过其额定电流的5%,这种情况是需要有警告标识的. 谢谢楼上的!
我想问的是通过电路怎么来分析接触电流有效值会超过3.5mA ,但保护电流不会超过输入电流的5%? 分别测试touch current 和PROTECTIVE EARTHING CONDUCTOR. 而不是分析,分析是得不出测试结果的
前者是接人体模拟阻抗的, 而后者不用接的.
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