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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 :+ j6 Y; H; I5 c
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?
. n# q0 N b n- b7 V* `" I7 n7 T, i+ G) M
根据60950标准2.2.3 Voltages under fault conditions: , B7 W- d" {) I. r
Except as permitted in 2.3.2.1 b), in the event of a single fault (see 1.4.14), the voltages between
) _" H7 k9 w$ I. `" N4 t3 h* Qany two conductors of the SELV CIRCUIT or CIRCUITS and between any one such conductor and earth
9 ?, q" g1 a$ i6 @$ G(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. + p$ l1 d/ P5 I
Moreover, the voltage shall not exceed 71 V peak or 120 V d.c., (V2 in Figure 2E). 7 W% j( M3 T' B/ M
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+ x$ B' f% H2 ?) w" X4 u! N
就是说60950故障条件下0-200ms之内可是71V peak 或者120V dc。
% F3 s1 i/ @4 q# n, f200ms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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