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引用第21楼nw-interfans于2009-12-28 21:18发表的 :
6 b. n: l& ]# i+ k- m* S( f而IEC60884和VDE0620关于耐压实验是:( @( @1 n0 l/ i( y; v
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。/ B5 J0 d, }: L6 {+ S2 L
注2:在输出电流小于100mA时,过电流继电器不得工作。
0 x; O* w$ j( Y* }: h% v( p3 T' ]60065标准中也有这么讲:
" v, Y/ c8 g9 A: ?; a" M) @' T& |
6 B) F' j+ A+ B9 y The test voltages shall be obtained from a suitable source so designed that, when the output/ E5 |" G5 s! r" e# M1 s/ t
TERMINALS are short-circuited after the test voltage has been adjusted to the appropriate level,
) `0 b9 ~# U7 v/ W2 k5 vthe output current is at least 200 mA.
; w+ \$ x1 y( @! y3 b An over-current device shall not trip when the output current is less than 100 mA.5 l, D+ _ Z9 u p
Care shall be taken that the value of the test voltage applied is measured within ±3 %.
# J* B2 s, t3 c5 L Initially, not more than half of the prescribed test voltage is applied, then it is raised rapidly to
9 K* e! W7 O. N5 O& Z! wthe full value which is held for 1 min. |
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