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本帖最后由 Safer 于 2013-5-21 10:14 编辑 6 H" k! V! {8 j$ \
xidua-10 发表于 2013-5-20 17:45
- U- y F: `4 u4 y+ |個人以為如下 2 E3 P, Z/ P( x5 m j
4943,基于IEC60950翻译的,关于这部份,IEC的原文如下:( z+ Q, F+ d& @' k
2.7.1 Basic requirements- N+ z! G- a! e
Protection in PRIMARY CIRCUITS against overcurrents, short-circuits and earth faults shall be
4 \ H9 M; l, x0 L5 A% P M. ^0 oprovided, either as an integral part of the equipment or as part of the building installation." t, F7 c, H! b' P# m
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红色字体部份,怎样理解也都无法得出:保护必须置于EUT内的要求~ |
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