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如果限值规定为110K, 也就是说是single fault condition; 这个测试符合下列要求,限值可以为210K:
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--For printed boards, teh temperature rise may exceed, for a maximum period of 5 min, teh values give in table 3, item b) "Fault conditions", by not more than 100K.) [ K. i/ K+ Z# V
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-- For primted boards withstanding the flame test described in 20.1.3, teh temperature rise may exceed0 u+ U. d( y0 Q5 {1 u9 T p
a) the values give in table 3, item b) "Fault conditons", by not more than 100K on one or more samll areas providing that the total area does not exceeding 2 cm2 for each fault condition and no electric shock hazard is involved, or ' ~; A$ J- d2 x* H
% C! ^. Q- _4 L( m+ y- `' Yb) for a maximum period of 5 min, the values given in table 3, item b) "Fault conditions" up to the temperature rise value given for "other parts" in table 3, item e) "Fault conditons", on one or more small areas, provinding that the total area does not exceed 2 cm2 for each fault condition and no electric shock hazard is involved |
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