标题: DSH 707 Fire resistance of material retaining live parts in position [打印本页] 作者: 小米 时间: 2012-9-5 16:15 标题: DSH 707 Fire resistance of material retaining live parts in position
Fire resistance of material retaining live parts in position5 d# f7 `+ O; Y# M
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60400(ed.6);am1;am2 & EN 60400:2000 / A1:2002 / A2:20049 I2 |6 e/ E. p
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Question:* p$ K. } D0 I5 z& R9 _
Consider a gear box of a downlight with integrated GX 24 lampholders, where the lampholder housing and lamp retention are at the front part of the gear box and the lampholder contacts are fitted to the PCB of the electronic ballast. : y1 d3 n: [9 d7 B! UHow do we apply the needle flame test in this case:$ W& b( w1 w2 k# w, ~" f, e& q6 y
- on the PCB only? / v8 r* Q+ S; i! u: G* U8 l- on the complete lampholder, i.e. on the lampholder housing?+ ~2 f/ H& F5 D+ P ?
Decision:2 h* ]# C3 c2 o s: F' K+ ?
The needle flame is applied to the parts which retain current carrying parts in position. The surrounding parts must be kept in place during the tests. * J3 b2 b n! E2 I* a* X, Y# Q; r0 x `
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DSH 707