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结合下 5.3.1.5 和 8.2.3 条款进行考虑 ——
: h. ^, z T# ?1 h$ b7 U4 L3 T5.3.1.5 The SELV current-carrying parts do not have to be insulated. However, if insulation is7 K4 J/ J p8 n8 b" l
applied, they shall be tested as mentioned in Section 10.7 `: U$ U0 K+ \! V$ v+ Z+ w
; t) c: U2 ?+ r( C7 a, o8.2.3 c) SELV circuits may have exposed current carrying parts under the following conditions.% e/ ~. d" n0 J8 N
– For ordinary luminaires:,! f) C' {' T C! `1 u4 c+ f1 T
• the voltage under load does not exceed 25 V r.m.s. or 60 V ripple-free d.c. and8 _' H' q8 c( _7 Q
• the no-load voltage does not exceed 35 V peak or 60 V ripple-free d.c.0 |/ ^% Q. }0 M. S2 s
where the voltage exceeds 25 V r.m.s. or 60 V d.c., the touch current does not exceed:
3 O5 ?0 D+ I7 P" L8 L9 R0 B• for a.c.: 0,7 mA (peak);
- M3 j( {: B' @2 b0 Z: i• for d.c.: 2,0 mA.! q9 L2 u& ?: D- E
If the voltages or currents exceed the values given above, at least one of the conductive) x2 e2 ^0 Q( u0 f* @% ~
parts in the SELV circuit shall be insulated by insulation capable of withstanding a test; [; Q" D: ~2 i& V) N$ `9 F6 m
voltage of 500 V r.m.s. for 1 min.
3 P, _& f- D% P2 N– For luminaires which are other than ordinary the nominal voltage (under load and under
, v, _# M: U3 @% Q, H! t, nno load) does not exceed 12 V r.m.s. or 30 V ripple-free d.c.. When the luminaire is
$ y3 o7 |: S& b1 [* Oopened for light source replacement, the voltage limits for ordinary luminaires are" }! f( n, g! E2 n. [- b
applicable (for parts only accessible during maintenance). |
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