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这个是针对裸露的输出端子的电压,恒压输出或恒流输出的控制器不得超过25V r.m.s8 t4 n8 A! ]) L% ~
2 K6 G* \0 I ? w无载输出电压不得超过33V r.m.s, 峰值不得超过33的根号2倍。; @& u$ m6 w7 W8 K6 B
8 E9 [5 } y. F7 P" k# o3 n具体的SELV具体在EN 60598-1第1.2.42.2章节
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1.2.42.2; R9 e# F2 r' Z: N2 q& w
SELV (safety extra low voltage)" w Z3 z. m' U, Q" B
ELV in a circuit which is insulated from the mains supply by an insulation not less than that
6 O: t7 ^: I1 Z" i' Qbetween the primary and secondary circuits of a safety isolating transformer according to
2 a0 f- U# U M) d uIEC 61558-2-6 or equivalent
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NOTE :, o% a; i8 @. [/ r
Maximum voltage lower than 50 V a.c. r.m.s. or 120 V ripple free d.c. may be specified in particular
" |/ i/ l0 j7 Irequirements, especially when direct contact with current-carrying parts is allowed. |
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