meikuif 发表于 2011-7-1 15:49

alvistan 发表于 2011-7-1 17:25

可以接触到安全低电压是ACCEPTABLE

zhaoyang772 发表于 2011-7-1 17:32

可以认为安全特低电压是不带电的.

June.Zhao 发表于 2011-7-1 17:33

合格啊,SELV的随便摸

学学安规 发表于 2011-7-3 12:30

灯具的SELV与IT类的的定义是不一样的,电压限值是50Vac rms, 120Vdc , 并且初次级之间是通过符合61558-2-6的安全隔离变压器隔离

ELV (extra low voltage)
voltage which does not exceed 50 V a.c. r.m.s. or 120 V ripple free d.c. between conductors, or
between any conductor and earth

SELV (safety extra low voltage)
ELV in a circuit which is insulated from the mains supply by an insulation not less than that
between the primary and secondary circuits of a safety isolating transformer according to
IEC 61558-2-6 or equivalent

是否可以触及还要根据漏电流和空载电压等测试才能判断

jsspace 发表于 2011-7-4 09:57

是否带电应该根据60598 附录A去做判断。
但我个人认为碰到SELV是可以的

guti_2008 发表于 2011-7-4 11:00

防触电试验中,selv是可以不绝缘

原任 发表于 2011-7-5 23:53

这个还要依靠短路链试验

meikuif 发表于 2011-7-6 15:40

peridot 发表于 2011-7-6 17:37

假如是SELV部件,就可以直接触碰,Annex A也会符合,即使你取最大值120VDC,串一个2000欧电阻,所得的电流远小于0.7mA。
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