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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 {" l# f. M" U- y
8 g+ A$ k2 E3 }+ k0 E2 X
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。
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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: H6 c# u& v, o+ x( l. b& ]$ C
SELV (safety extra low voltage)+ y$ G+ T8 c. @( _
ELV in a circuit which is insulated from the mains supply by an insulation not less than that
- i! [* s6 V8 B3 k) [4 R6 v! a5 ~between the primary and secondary circuits of a safety isolating transformer according to
% X! d) A9 u, ]; s* L' V) F( hIEC 61558-2-6 or equivalent
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' s7 E, E& S( w: O1 V/ VNOTE :
* u" E1 _; G4 RMaximum voltage lower than 50 V a.c. r.m.s. or 120 V ripple free d.c. may be specified in particular* }# l3 O2 M& ^, ?
requirements, especially when direct contact with current-carrying parts is allowed. |
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