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发表于 2007-11-6 13:43
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引用第25楼jackie于2007-11-06 13:39发表的 :" P8 S% }1 }( ^/ R: [# l+ _" {4 H# g
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你可以參考IEC/EN/UL 60950章節5.3.8的內容,試驗中及試驗後的判定裡面都沒有提到不接受跳閘,且2.7.1裡的第一段話也寫得很清楚"rotection in PRIMARY CIRCUITS against overcurrents, short circuits and earth faults shall be provided, either as an integral part of the equipment or as part of the building installation."- Z& F2 B8 O$ k3 h; l5 K
* G7 J, T. }) G, V7 e以上都只針對60950的標準來說,其他標準有些是不接受跳閘的情況發生 (如UL1012, UL 1310) 这段标准在OSM中被改过了,见下:" f8 X7 R- I2 | F( h5 \8 U
To protect against excessive current, short-circuits and earth faults in primary circuits, protective devices shall be included either as integral parts of the equipment or as parts of the building installation, subject to the following, a), b) and c):$ j. @+ f" v3 Y, c( T9 J
a) except as detailed in b) and c), protective devices necessary to comply with the requirements of 5.3 shall be included as parts of the equipment; G& k [3 @' I, B3 T$ P
b) for components in series with the mains input to the equipment such as the supply cord, appliance coupler, r.f.i. filter and switch, short-circuit and earth fault protection may be provided by protective devices in the building installation;
0 ^# \" u. n% I( Dc) it is permitted for pluggable equipment type B or permanently connected equipment, to rely on dedicated overcurrent and short-circuit protection in the building installation, provided that the means of protection, e.g. fuses or circuit breakers, is fully specified in the installation instructions.
& c6 W" t5 `8 h3 MIf reliance is placed on protection in the building installation, the installation instructions shall so state, except that for pluggable equipment type A the building installation shall be regarded as providing protection in accordance with the rating of the wall socket outlet. |
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