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结合下 5.3.1.5 和 8.2.3 条款进行考虑 ——
3 Y$ m; n0 P. W, {3 C- ^# s6 I5.3.1.5 The SELV current-carrying parts do not have to be insulated. However, if insulation is8 k& v" Z s( } o" C0 E
applied, they shall be tested as mentioned in Section 10.
* @4 v' p0 Q6 a& }" V0 N' A7 O; O- a9 q& c- _: ?
8.2.3 c) SELV circuits may have exposed current carrying parts under the following conditions.
1 M% B4 t) I l, c) U* T– For ordinary luminaires:,
* {9 a& E6 u0 Q+ ~. `• the voltage under load does not exceed 25 V r.m.s. or 60 V ripple-free d.c. and
) O* i/ [2 h, V0 c7 O• the no-load voltage does not exceed 35 V peak or 60 V ripple-free d.c.
; T% I$ [ {& c9 K Vwhere the voltage exceeds 25 V r.m.s. or 60 V d.c., the touch current does not exceed:
/ i* z, D3 | I9 i# [- n7 X# e* d' Y- Y• for a.c.: 0,7 mA (peak);: R- I) A! R7 `
• for d.c.: 2,0 mA.
- Z5 h3 S6 M' {! X0 C7 V% VIf the voltages or currents exceed the values given above, at least one of the conductive
0 d2 m3 u" x6 m4 \6 A3 cparts in the SELV circuit shall be insulated by insulation capable of withstanding a test
* B9 M6 z, [) @( {5 a5 Avoltage of 500 V r.m.s. for 1 min.0 T4 X! I9 _7 q; i! j$ s) n
– For luminaires which are other than ordinary the nominal voltage (under load and under7 ?# A9 D, x7 u
no load) does not exceed 12 V r.m.s. or 30 V ripple-free d.c.. When the luminaire is$ B# ?' I3 d/ n
opened for light source replacement, the voltage limits for ordinary luminaires are, {/ e- m# @) {8 L! x
applicable (for parts only accessible during maintenance). |
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