|
各位同学!# N- d+ U; P a7 c. H( q
灯具III 结构除了以下要求外,还有别的要求吗?谢谢!+ o( S% w5 V: H* G$ E) F% V
c) Class III luminaires may have exposed current carrying parts in the SELV circuit under the 8 S! A1 `" Y2 O8 N& z
following conditions. ( w9 N+ R/ p! C- w+ ?# s' q
– For ordinary luminaires, the voltage under load does not exceed 25 V r.m.s. or 60 V
8 |( p0 c6 a0 \* E& W2 eripple-free d.c. and where the voltage exceeds 25 V r.m.s. or 60 V d.c., the touch ' k: @! V6 Q- H+ o1 Q( d- N! Q [1 e
current does not exceed:
: \" \8 ]8 {- o( Q+ `' }; \' {– for a.c.: 0,7 mA (peak);
3 s; Z# i/ |) Z7 E9 @! @; t. c( h– for d.c.: 2,0 mA.
& D2 I0 `5 `. ^, S6 ]7 a6 m/ G– the no-load voltage does not exceed 35 V peak or 60 V ripple-free d.c. ( ~/ Z6 ^% {4 V0 @" W; W* G
If the voltages or currents exceed the values given above, at least one of the conductive - n+ V6 C3 q' M, _$ T% M
parts in the SELV circuit shall be insulated by insulation capable of withstanding a test ' ~- c7 u2 B+ J) B5 z
voltage of 500 V r.m.s. for 1 min. / X9 n) b) q& O; D8 \
– for luminaires which are other than ordinary, the nominal voltage does not exceed 12 V " a0 l2 z1 P' G! X8 w' z8 v
r.m.s. or 30 V ripple-free d.c.
0 Y' Z7 y! }4 i A& N: f. h' A |
|