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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 :
- t5 F# }4 E( Y, s* u* E- C1 R4 O6 t4 F8 B
- w; J* }, t' g2 O' F* R6 }实在不好意思,误导你了。。。
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$ C1 y& t$ d" z# e( c非常抱歉。。。8 b& l: |1 ]& R& J' Y' h
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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:
; Y2 n- ^# S3 s) T) d2 x3 [– 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.2 ]/ B8 A2 h' r2 C Q; u- G- K
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In the case of windings providing protection against electric shock or where a fault could result
@5 G l3 f* G/ |& p3 |, S Din a fire hazard, the winding is then in each case subjected to the dielectric strength test of 10.3( G! b# W6 F) _# c4 Z
without the humidity treatment of 10.2, starting within 1 min after the temperature rise* c/ ?/ Y( D5 P1 U' H# Q
measurement.8 X% c2 n. K0 u& k
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.. I1 V* P6 D5 b3 K- k, A
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:
& B7 y* ^' j- Z& |5 S11.2.1 DR Measurement of temperature rises' V8 g& _. ^0 z$ R" [5 P. `
The 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.
1 t* e t0 m* f/ \4 b) g% P7 _' B在达到温度稳定前, 但工作不超过4小时. 对吗? |
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