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引用第21楼nw-interfans于2009-12-28 21:18发表的 :& S4 w- q1 P9 @ F5 ^5 s
而IEC60884和VDE0620关于耐压实验是:
8 w2 B; `& A7 @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。& e# B: p0 r. N D) R7 \
注2:在输出电流小于100mA时,过电流继电器不得工作。
9 D5 N2 {- J' [9 @4 y0 Z2 r60065标准中也有这么讲:2 v; z; v$ h; N/ i' i l1 v
6 r C# [ P0 B6 s; g) y/ t! O The test voltages shall be obtained from a suitable source so designed that, when the output3 X( G- O$ F. t W' V% s) c5 ]
TERMINALS are short-circuited after the test voltage has been adjusted to the appropriate level,
/ h1 w: f. b( g: bthe output current is at least 200 mA.9 g& [, `; \: d a; i' d4 o) c
An over-current device shall not trip when the output current is less than 100 mA.$ j4 ~# W* a8 l7 s; B5 a
Care shall be taken that the value of the test voltage applied is measured within ±3 %.
3 m) z' S% k8 _- R. Y Initially, not more than half of the prescribed test voltage is applied, then it is raised rapidly to
/ \8 `" O$ u: ?$ h, Pthe full value which is held for 1 min. |
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