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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
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ELV (extra low voltage)7 M7 `, b: h/ J
voltage which does not exceed 50 V a.c. r.m.s. or 120 V ripple free d.c. between conductors, or
/ o2 T* m# [/ C" r- mbetween any conductor and earth0 ?6 b7 z! V' m3 o& n( m
9 D$ V J" r, W) FSELV (safety extra low voltage)
5 X$ ]; W+ i! dELV in a circuit which is insulated from the mains supply by an insulation not less than that
+ Q4 R8 v A8 Y7 y ?8 H; R$ b$ @2 o4 pbetween the primary and secondary circuits of a safety isolating transformer according to
7 m, b3 t4 M# i' T! D; ^* JIEC 61558-2-6 or equivalent
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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 |
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