|
|
事实上, 楼主您可参考UL 1598里所写的一段(如下), 而内容说明了, LED本身即不是用来作为耐压之意图, 但您在此部份是为一次测的部份, 加上UL 588里并无提到LED打耐压有breakdown的特殊条款, 此部份较为难解, 兹因LED本身就是无法耐如此高的电压(多半被设计在二次测, 有透过被隔离的变压器), 我也试过, 再多打一两次就会有很多LED因此而损坏, 有时打还会闪烁, 您可先试着fault掉LED再试打看看.
: k: m$ e: ]0 u$ }' ~6 ~# j6 O
. A* R# P* h! S/ f至于20灯比80灯功率较大的原因, 您可试着看看串并数比以及LED是否相同, 或灯串有无其它功能..等., B' j3 F8 _, [7 S5 v; ]- P
- |# s4 V8 h) I
17.1.6 Solid state components that are not relied upon to reduce the risk of electric shock and that can9 V% V$ r# u9 A
be damaged by the applied dielectric potential may be disconnected for the test. The circuitry may be
5 ~& d3 m8 {" ]rearranged for the purpose of the test to reduce the likelihood of solid state component damage while$ k$ o+ X: o) [+ T( X
retaining the representative dielectric stress on the circuit. |
|