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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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- x) K4 n5 R1 q' I$ w实在不好意思,误导你了。。。/ Y, W2 g. J) ~1 ]
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非常抱歉。。。
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# q! K" |% k! a; c5 z谢谢! 我明白了, 应该使用下面的条款(章节11.2.5) 可以解释:% z6 G3 c V+ Z
– 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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In the case of windings providing protection against electric shock or where a fault could result
0 N1 ~, ~, h1 y6 oin a fire hazard, the winding is then in each case subjected to the dielectric strength test of 10.3% j" f% u. @) Y4 }& f# l9 h8 X; y
without the humidity treatment of 10.2, starting within 1 min after the temperature rise2 }5 F- Q, ?" C0 N$ i
measurement.( z% X- @! ^- h
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.0 F% Z3 _8 ?) M/ n. x) n% F4 Z
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:
6 @+ i) x- L# D11.2.1 DR Measurement of temperature rises9 \; f& X7 r2 ^! e# G
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.
: J4 I% }' S9 O9 M6 z在达到温度稳定前, 但工作不超过4小时. 对吗? |
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