PDSH 990 Fire resistance of material retaining live parts in position

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PDSH 990

Fire resistance of material retaining live parts in position

17.5

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

Standard(s):
" [0 f4 Z( }8 d' u- [& tIEC 60400 All editions
Subclause(s): 17.5
No. Year PDSH 0990 2010
5 Z5 w3 C6 H$ ]; d5 [( d8 BCategory: LITE Developed by: ETF5 OSM/LUM
. y6 m. T$ b0 YSubject:
) _  W# n& g/ g: ^( WFire resistance of material retaining live parts in position
* \; V& C7 `' M9 YKey words:
- Integrated lampholders
- Fire resistance
' j! z+ T3 u+ s' ]% O1 m- PCBs
To be approved at the 49th CTL Plenary Meeting, in 2012
Question:
Consider a gear box of a down light with integrated GX 24 lampholders. In such a gear box the
+ l7 w8 w% S1 ~, U  R6 ~lampholder housing and lamp retention are both parts of the gear box front. The lampholder contacts are
  f$ ^! X! ^! U2 X3 gthen fitted to the PCB of the electronic ballast.
6 C" B, n3 Y- p: i+ VHow do we apply the needle flame test in this case:
- On the PCB only?
/ B, A# Q; T5 A) Y3 w- On the complete lampholder, i.e. on the lampholder housing?
Decision:
2 n+ |, d* I/ P: b* t4 wThe needle flame is applied to the parts which retain current carrying parts in position. The surrounding
: G1 o- @+ f6 P: i7 M; ~$ B7 m6 fparts must be kept in place during the tests.

& u7 e% W5 m  e4 n; `