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1:有决议称III类LED 灯具温升测试电压是1.1倍,如果一款灯具带适配器,输出安全特地电压,那么这个灯具应该算是II 类还是III 类?. L. H( J+ ]" \' t* e
2:耐压测试时样品发出的声音算是正常现象吗?所谓的闪络是指出现电火花吗 ?5 q3 v+ v7 j6 Y; W- @
3:电容放电测试,标准说的是1分钟,1秒钟,那么1分钟或1秒钟后的放电电压超限该怎么判定?
& S. h* K/ u0 o( o0 q4:嵌入式灯具,IEC60598-1:2014 附录D中描述隔热棉是包裹在测试箱子外面的,我这里有黄颜色的那个隔热棉,不知道是否符合要求,请问大家的隔热棉是这个样的吗 ?# t2 q& a/ R) x& Q( o' i% W- y# H
a) Luminaires for recessing into ceilings with thermal insulating material covering the' z. X1 d% O7 W# F1 \( Z
luminaire* L/ d& x! d& R# `; p6 L
Sealed box with thermal insulating material is tightly fitted to the outside of the box. The
# ?( u8 ]2 }5 ~thermal insulation shall be equivalent to two 10 cm thick layers of mineral wool with a coefficient
8 D0 ]$ c! r' F4 m3 b3 pof thermal resistivity of 0,04 W/(m.K). Thinner layers can be used when having a
! y: Z/ m; |$ E2 H( shigher thermal resistivity. The thermal resistance of the test box shall in any case be at
; A! r; k+ K3 p7 J$ q. q1 aleast 5 m2 K/W.0 r& H+ ?1 W# ~0 m! l- g
0 o/ @. L2 [. Y3 p a+ h7 x+ e5 h% c& m2 m
谢谢指教 |
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