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各位同学!8 f7 w& `+ O, V
灯具III 结构除了以下要求外,还有别的要求吗?谢谢!! b. O2 ^6 [/ m {! D+ I6 ?
c) Class III luminaires may have exposed current carrying parts in the SELV circuit under the
' m7 t+ h' h: R3 l# G9 Sfollowing conditions.
/ h$ k3 o) _/ z8 C# E– For ordinary luminaires, the voltage under load does not exceed 25 V r.m.s. or 60 V
" X1 P6 A w5 D- mripple-free d.c. and where the voltage exceeds 25 V r.m.s. or 60 V d.c., the touch 6 ~( q: k) ? Z" b
current does not exceed: . u9 p; N% E2 Z( K/ K
– for a.c.: 0,7 mA (peak); # {* K) n& }7 [2 X# |$ b7 o
– for d.c.: 2,0 mA. 7 { ?. L9 D- m2 D
– the no-load voltage does not exceed 35 V peak or 60 V ripple-free d.c.
% r& \9 j. ^& g" g+ R If the voltages or currents exceed the values given above, at least one of the conductive
" x4 C! r9 o5 O% \( mparts in the SELV circuit shall be insulated by insulation capable of withstanding a test
& [, G& Y# H' R4 [$ Y q5 P- ?5 K4 avoltage of 500 V r.m.s. for 1 min.
# _: S8 i7 T0 N7 M, M– for luminaires which are other than ordinary, the nominal voltage does not exceed 12 V
# W9 j8 j: i6 a+ {( `, z. r" Jr.m.s. or 30 V ripple-free d.c.
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