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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.s! r, K' d I" q
; Y/ U: I# i2 _2 j9 v* f3 z0 e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。+ N$ s9 D9 @( `, E; |2 ?
5 n9 Y" ^9 H% z" p0 d具体的SELV具体在EN 60598-1第1.2.42.2章节
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5 N& I: {- T* z1.2.42.2
- B6 _9 s$ A% q; BSELV (safety extra low voltage)
9 t K# Q; v& l' B8 AELV in a circuit which is insulated from the mains supply by an insulation not less than that5 s# H, ~; D5 G, y1 E5 R- \
between the primary and secondary circuits of a safety isolating transformer according to
" ?: V/ r3 S5 Q: c3 r& f( U! x/ ~IEC 61558-2-6 or equivalent
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/ E" q6 _( l0 W- S: O7 {NOTE :
- O2 {$ N9 z) a w4 D9 |Maximum voltage lower than 50 V a.c. r.m.s. or 120 V ripple free d.c. may be specified in particular [7 Z) U3 n0 f: d2 @
requirements, especially when direct contact with current-carrying parts is allowed. |
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