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各位同学!; I8 p" F( x9 I" `. W
灯具III 结构除了以下要求外,还有别的要求吗?谢谢!
( |& p2 r9 ]" y; A" @/ v+ qc) Class III luminaires may have exposed current carrying parts in the SELV circuit under the ) i% x$ \/ g; K( I. d8 Z- ~( T r
following conditions. - q- `# p6 p4 [$ c7 U4 K) U
– For ordinary luminaires, the voltage under load does not exceed 25 V r.m.s. or 60 V
, T- C$ Z. Y" W+ U9 |ripple-free d.c. and where the voltage exceeds 25 V r.m.s. or 60 V d.c., the touch
. R8 H( f1 X7 I& Kcurrent does not exceed:
, `1 K; c+ J: J/ ]* W4 j- u$ A– for a.c.: 0,7 mA (peak);
& k) G& p, q: C& H$ d$ D# c– for d.c.: 2,0 mA.
; V0 Q/ y% }7 h, K. Q– the no-load voltage does not exceed 35 V peak or 60 V ripple-free d.c.
" i+ C, C. I- f0 L2 i% j" H! S If the voltages or currents exceed the values given above, at least one of the conductive # u2 M7 U' l( _. ]* m% F4 R
parts in the SELV circuit shall be insulated by insulation capable of withstanding a test
1 W! r+ D& J6 qvoltage of 500 V r.m.s. for 1 min.
) j& o0 V o$ U J6 y, H– for luminaires which are other than ordinary, the nominal voltage does not exceed 12 V
/ @2 i' v: s7 r1 t7 Ur.m.s. or 30 V ripple-free d.c. 3 {7 \4 G6 p- m* ]
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