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引用第21楼nw-interfans于2009-12-28 21:18发表的 :6 U* t0 H3 L% W Z% n- j
而IEC60884和VDE0620关于耐压实验是:( E2 T8 ]) S9 P0 W) i7 w
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。
% A2 z P! J. C" w1 U% Y" y; R5 t注2:在输出电流小于100mA时,过电流继电器不得工作。
3 Y" X3 ^0 p- R% \8 U' i5 \& Z, ^60065标准中也有这么讲:% r3 b% u) \& N2 F
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The test voltages shall be obtained from a suitable source so designed that, when the output0 F0 @/ d5 g6 G9 ?2 u- v6 p
TERMINALS are short-circuited after the test voltage has been adjusted to the appropriate level,5 ]" l" w6 u+ }$ o8 R5 E
the output current is at least 200 mA.
1 a! `/ {1 E& {9 e) z7 N* L An over-current device shall not trip when the output current is less than 100 mA.8 K2 T) c' B7 p9 w: v% F
Care shall be taken that the value of the test voltage applied is measured within ±3 %./ P5 e9 S6 A. Z* H/ Z7 F( x
Initially, not more than half of the prescribed test voltage is applied, then it is raised rapidly to
# d3 d/ \: U# P7 Xthe full value which is held for 1 min. |
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