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引用第0楼黑土白云于2009-07-01 15:33发表的 故障条件下电源端的剩余电压判断 :0 w' z8 {0 _6 J, V f( J
60065故障条件下是2S后120V,60950是怎么要求的呢?在哪个条款说的? 8 I/ s2 V2 R3 N* f
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根据60950标准2.2.3 Voltages under fault conditions:
$ _4 D B' r3 j2 [) VExcept as permitted in 2.3.2.1 b), in the event of a single fault (see 1.4.14), the voltages between
: a$ {/ q5 w" Z) Q; W# Iany two conductors of the SELV CIRCUIT or CIRCUITS and between any one such conductor and earth $ {. j( I& X# P2 R$ K. V& \
(see 1.4.9) shall not exceed 42,4 V peak, or 60 V d.c. (V1 in Figure 2E) for longer than 200 ms.
1 ?- C3 M h! PMoreover, the voltage shall not exceed 71 V peak or 120 V d.c., (V2 in Figure 2E).
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* X4 O( N- b7 t y/ e- i: M就是说60950故障条件下0-200ms之内可是71V peak 或者120V dc。
7 p- n2 p. U" Q200ms之后电压时间内的故障电压不能超过42,4 V peak, or 60 V d.c.。 |
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