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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.s1 E1 `+ t, |/ R5 g. t
0 ^0 E1 r% U6 a* `3 }
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。( N9 P$ f' }( y
4 e; ?( ~0 c2 p具体的SELV具体在EN 60598-1第1.2.42.2章节0 V' U) i' k- L) i
3 l. e4 z) ]% M2 C5 C( D# ~1.2.42.2
! X( b% ]* M, O' ?, ESELV (safety extra low voltage)
. ~. l0 ?% C! x5 g" m5 DELV in a circuit which is insulated from the mains supply by an insulation not less than that1 Q5 O- E. A7 C8 p3 g8 `) ^9 ^
between the primary and secondary circuits of a safety isolating transformer according to- M. V6 l* S4 c0 i. e3 o* v
IEC 61558-2-6 or equivalent
9 V; q) r3 D; R, L5 [3 U* F; W/ D: u
NOTE ：
9 e9 t+ U2 U8 ?' l7 X( VMaximum voltage lower than 50 V a.c. r.m.s. or 120 V ripple free d.c. may be specified in particular
7 l1 Y* d( f5 P4 j N7 ], |4 Erequirements, especially when direct contact with current-carrying parts is allowed. |
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