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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 :
2 g5 s; G# d( K: }6 s60065故障条件下是2S后120V,60950是怎么要求的呢?在哪个条款说的? ( M* V( M* f5 |$ _1 D
7 l- d6 x- S/ |4 G) n3 N- y根据60950标准2.2.3 Voltages under fault conditions: ' B1 r" A O2 d% t' M
Except as permitted in 2.3.2.1 b), in the event of a single fault (see 1.4.14), the voltages between + I2 W' U& E5 _) G
any two conductors of the SELV CIRCUIT or CIRCUITS and between any one such conductor and earth - z' e2 w6 R, F( t$ Q5 w0 K
(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. 5 o/ _0 `' z! ] h+ ]7 f9 @3 [
Moreover, the voltage shall not exceed 71 V peak or 120 V d.c., (V2 in Figure 2E).
: h2 A4 G& V- X' k3 V& X6 ]* ^' k* s
3 f2 j. `% Y/ Y( B$ f" r$ X- k
就是说60950故障条件下0-200ms之内可是71V peak 或者120V dc。
( V$ `, t+ Z4 i! ~7 P) v200ms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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