PDSH 990 Fire resistance of material retaining live parts in position

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PDSH 990 , a! e7 a) v; ]' M 5 K" X4 z3 C/ q5 l, w0 J

Fire resistance of material retaining live parts in position

17.5 ' Q7 E# ~1 G$ t0 a% y

60400(ed.5);am1;am2 & 60400(ed.6);am1;am2 & 60400(ed.7);am1

Standard(s):
1 P& f  X5 p: b7 MIEC 60400 All editions
Subclause(s): 17.5
No. Year PDSH 0990 2010
4 q1 e9 ~+ h+ h( M; T6 ]& jCategory: LITE Developed by: ETF5 OSM/LUM
Subject:
Fire resistance of material retaining live parts in position
" S/ ^7 L. p" J1 }! B/ J7 yKey words:
- Integrated lampholders
# @8 W& I$ r, `- Fire resistance
- PCBs
; b" ~2 j4 j& h4 @; w3 eTo be approved at the 49th CTL Plenary Meeting, in 2012
# ~. {* @1 z8 [5 u5 X" s# O- oQuestion:
Consider a gear box of a down light with integrated GX 24 lampholders. In such a gear box the
lampholder housing and lamp retention are both parts of the gear box front. The lampholder contacts are
: X. e! o+ C% ithen fitted to the PCB of the electronic ballast.
How do we apply the needle flame test in this case:
* W3 X$ l, {+ c" h+ D- On the PCB only?
( ~8 Y% W9 T4 S9 ?8 V9 |- On the complete lampholder, i.e. on the lampholder housing?
Decision:
' G/ O# A$ k3 fThe 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.
6 Z. ^3 u9 ], }5 d( O2 {

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