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引用第21楼nw-interfans于2009-12-28 21:18发表的 :: x4 {7 B" d `/ r7 T8 `* A
而IEC60884和VDE0620关于耐压实验是:! r# r+ M/ S% ~. R2 {0 U8 W! h
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。
* Z' x. s& |+ k: R注2:在输出电流小于100mA时,过电流继电器不得工作。
2 }( e0 A9 n. }9 ?1 F60065标准中也有这么讲:
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The test voltages shall be obtained from a suitable source so designed that, when the output
* S4 B: `9 I% J7 D$ B: u# |TERMINALS are short-circuited after the test voltage has been adjusted to the appropriate level,0 B" S7 P* M4 e* a* u
the output current is at least 200 mA.2 {7 g: j7 S; ]
An over-current device shall not trip when the output current is less than 100 mA.
8 X2 d& R- w; }7 Y# O8 w Care shall be taken that the value of the test voltage applied is measured within ±3 %.
$ S' V. o$ R" |% } N$ R% k2 j Initially, not more than half of the prescribed test voltage is applied, then it is raised rapidly to" @/ L) K0 b! ?0 _1 M( G$ Y
the full value which is held for 1 min. |
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