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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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) y6 Q8 l. d: P9 dELV (extra low voltage)
+ A- |8 v* g3 Y( n* R; O/ `/ }7 Pvoltage which does not exceed 50 V a.c. r.m.s. or 120 V ripple free d.c. between conductors, or
. Q& b4 s/ C$ B3 m# l' s" k/ e0 ?between any conductor and earth
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SELV (safety extra low voltage)
! _* M9 L+ P/ f8 e& j. a" o, FELV in a circuit which is insulated from the mains supply by an insulation not less than that& n" E/ q y# h2 X0 Y* }: ?
between the primary and secondary circuits of a safety isolating transformer according to* H$ c K* r, l- ~! i0 y& e
IEC 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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