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发表于 2007-7-7 16:27
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引用第21楼barry于2007-07-07 15:55发表的 :
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& R% w$ F" K' Q* J" |实在不好意思,误导你了。。。- B! R: B: o4 U% p$ X' c" @/ G3 ^
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非常抱歉。。。
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谢谢! 我明白了, 应该使用下面的条款(章节11.2.5) 可以解释:6 i, T; @) U7 i" T: a! Q: m$ {
– If the temperature is limited due to the operation of an integral non-resettable or a nonreplaceable protective device or due to the open circuiting of a winding, the temperature rises may be exceeded, but the test shall be carried out three times using new components.
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* \4 j3 W ~7 _) o7 ZIn the case of windings providing protection against electric shock or where a fault could result$ d, R4 I3 `+ @5 Q! C8 v
in a fire hazard, the winding is then in each case subjected to the dielectric strength test of 10.35 j/ z4 C2 l* N0 Z
without the humidity treatment of 10.2, starting within 1 min after the temperature rise
6 w/ A2 ]# I' G1 y+ w# w( nmeasurement.
4 U* [1 Q, x2 W8 t" e* z K, h: o9 D温度保险起保护作用时, 温升可以超标, 但须通过标准规定的高压测试.$ E& Q3 V6 Z( O- }1 Y0 h- ?* {3 t
引申的问题是: 温度保险丝须在多长时间内起保护作用, 是否可以应用60065章节11.2.1第一段话理解:, s4 N$ B5 g4 d# r
11.2.1 DR Measurement of temperature rises
4 f( Q9 K4 J. m Y& R; c% G! k8 VThe apparatus is operated under fault conditions and the temperature rises are measured after a steady state has been attained, but not later than after 4 h operation of the apparatus.
9 \; e0 K$ v9 O6 d2 {在达到温度稳定前, 但工作不超过4小时. 对吗? |
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