xidua-10 发表于 2013-5-20 17:45 ' Z$ t" u3 P' O5 i0 k
個人以為如下
% N: i# B: x& X5 \, k4943,基于IEC60950翻译的,关于这部份,IEC的原文如下: 9 _; [% {4 c1 ^% X# v& ?9 s8 @2.7.1 Basic requirements/ T! @, e' h& @, Y8 y' G8 a
Protection in PRIMARY CIRCUITS against overcurrents, short-circuits and earth faults shall be' f1 I, M6 r/ F# k# P$ Z
provided, either as an integral part of the equipment or as part of the building installation. 4 x. t9 f8 B5 w& @# c8 j) X# Y8 n! t1 z8 [
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~