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根据60950标准2.2.3 Voltages under fault conditions: : t; z8 M* A8 `! ?. T9 M8 \
Except as permitted in 2.3.2.1 b), in the event of a single fault (see 1.4.14), the voltages between + Z3 l6 z7 t, ]8 g- K" t
any two conductors of the SELV CIRCUIT or CIRCUITS and between any one such conductor and earth
4 R# z" N) s5 [% e0 `(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.
, O3 ^6 y0 P- j1 e, x v# n' ZMoreover, the voltage shall not exceed 71 V peak or 120 V d.c., (V2 in Figure 2E). , e' X1 x+ Y" a3 Q* j: @
' G& ^0 S# f+ Y2 C' }& z8 Y! |
) }+ ], F1 s2 u l {& K
就是说60950故障条件下0-200ms之内可是71V peak 或者120V dc。
# L3 b7 ] R# K3 y I2 K1 @; q* S200ms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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