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本帖最后由 jjlamshushushu 于 2014-6-27 06:46 编辑 - g% p4 D& ^- [) y1 k5 ]) a" v* I2 B) \
8 M8 X& |: d5 V( {0 H/ v60598-1 Clause 13.2.1 4 P& F/ }& i; K* Q# y7 X. ]3 y$ w: Q
Compliance is checked by the following test:( d" k* G' D$ i( S3 H8 `8 S
The test is not made on parts of ceramic material or on insulation of wiring.: ^0 V7 N, S& b3 A
The test shall be made in a heating cabinet having a temperature 25 °C ± 5 °C in excess of the
: I3 w! x F% F$ g. g1 j; W0 noperating temperature of the relevant part determined during the temperature test (normal; h; Z) k5 R. o. S# G+ F! _2 T
operation) of Section 12, with a minimum temperature of 125 °C when parts retaining current carrying parts or SELV parts in position are tested, and 75 °C for other parts.1 @+ `2 \$ e7 P* Q9 |
载流部件又没有说一定是高压的,也可以是SELV,低压大电流由于过热照样会引起载流部件短路发生火灾(比如常用在电动类的24V的镍氢电池),所以SELV球压是必须需要考虑的。。。当然,SELV的附加绝缘的塑料部件可以免去球压测试。 |
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