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结合下 5.3.1.5 和 8.2.3 条款进行考虑 ——
8 l9 P) I/ E/ [8 s2 x4 |5.3.1.5 The SELV current-carrying parts do not have to be insulated. However, if insulation is
- p* S) E; \+ I1 [: Iapplied, they shall be tested as mentioned in Section 10." O3 O1 ` k* w; A; u( \( \5 D e
# _0 E# j. m, m3 G( l4 d* L8.2.3 c) SELV circuits may have exposed current carrying parts under the following conditions.% Y3 N- j9 N8 |) m: f3 C' o% u' _- ~
– For ordinary luminaires:,5 b. S* c |* ^6 T
• the voltage under load does not exceed 25 V r.m.s. or 60 V ripple-free d.c. and$ k2 |6 x$ o4 ~- T5 g7 K( k* U
• the no-load voltage does not exceed 35 V peak or 60 V ripple-free d.c.
6 S; P8 k0 h- _. twhere the voltage exceeds 25 V r.m.s. or 60 V d.c., the touch current does not exceed:
% Q, ~8 R8 c7 z2 t4 _' v: {' N• for a.c.: 0,7 mA (peak);" O @ t9 z6 ^; U
• for d.c.: 2,0 mA.
- t: P# J) u$ @& {If the voltages or currents exceed the values given above, at least one of the conductive1 U: @( }4 ^( _, d( P
parts in the SELV circuit shall be insulated by insulation capable of withstanding a test
' @5 W6 [5 K; [( xvoltage of 500 V r.m.s. for 1 min.
, S( d* v: G. D3 H– For luminaires which are other than ordinary the nominal voltage (under load and under
- x! p% Y: ^* d: ?4 |no load) does not exceed 12 V r.m.s. or 30 V ripple-free d.c.. When the luminaire is
# _' k# l7 ^# V. U6 ]1 ?opened for light source replacement, the voltage limits for ordinary luminaires are" i! ~/ o7 ?% t. @
applicable (for parts only accessible during maintenance). |
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