标题: SELV,关于安全特低电压值的范围(直流120V 交流50V最大值） [打印本页] 作者: kelvinwu 时间: 2010-8-15 14:44 标题: SELV,关于安全特低电压值的范围(直流120V 交流50V最大值） ELV in a circuit which is insulated from the mains supply by an insulation not less than that - j3 m# x# d- i. G" n9 J! kbetween the primary and secondary circuits of a safety isolating transformer according to % U% G: ^5 j& l6 KIEC 61558-2-6 or equivalent . + m+ y* L `0 s2 A) G8 W8 w$ B7 RNOTE Maximum voltage lower than 50 V a.c. r.m.s. or 120 V ripple free d.c. may be specified in particular requirements, especially when direct contact with current-carrying parts is allowed. 8 ^7 |3 y7 o: o0 u& `, U这里边所说的直流电压允许最高值是120V吗？作者: kelvinwu 时间: 2010-8-15 14:59
120的电压比较高，但是61558（Safety of power transformers, power supply units ( q, S' U' N _and similar）标准里确实说到这一点：& M# g. ?* a- d0 o
6.101 The rated output voltage shall not exceed 50 V a.c. and/or 120 V ripple-free d.c作者: xiqiangzhang 时间: 2010-8-16 20:06
更新标准是这样要求定义的。