Quote:
引用第21楼nw-interfans于2009-12-28 21:18发表的 :
而IEC60884和VDE0620关于耐压实验是:
1:试验所用高压变压器应设计成:当将输出电压调到相应的试验电压后使输出接线端短路时,输出电流至少为200mA。
注2:在输出电流小于100mA时,过电流继电器不得工作。
60065标准中也有这么讲:
The test voltages shall be obtained from a suitable source so designed that, when the output
TERMINALS are short-circuited after the test voltage has been adjusted to the appropriate level,
the output current is at least 200 mA.
An over-current device shall not trip when the output current is less than 100 mA.
Care shall be taken that the value of the test voltage applied is measured within ±3 %.
Initially, not more than half of the prescribed test voltage is applied, then it is raised rapidly to
the full value which is held for 1 min.