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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 :% B0 _: J" F, g# o6 M
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?
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3 }; A6 X. t. y' s x根据60950标准2.2.3 Voltages under fault conditions: : d% |3 f" [+ X0 t8 `3 \) j
Except as permitted in 2.3.2.1 b), in the event of a single fault (see 1.4.14), the voltages between , j* \; O2 K u* k9 j
any two conductors of the SELV CIRCUIT or CIRCUITS and between any one such conductor and earth
5 S! a7 L/ ~) ]3 l(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.
; O% V! |& q: X$ U' H; R {Moreover, the voltage shall not exceed 71 V peak or 120 V d.c., (V2 in Figure 2E). ; }+ Q4 F- H3 Q+ F
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' b% ]* P% P$ a8 s& d f$ g, [就是说60950故障条件下0-200ms之内可是71V peak 或者120V dc。 0 A1 a1 |3 ~" y/ t3 ?6 L& C0 p
200ms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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