PDSH 958 Small push in lamp Small plastic lampholder Mechanical test

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PDSH 958 1 v* W! h3 G' b* }" N  g

Small push in lamp Small plastic lampholder Mechanical test , N) T$ `. T+ m8 I5 v

20.7.6 . ~3 j# B7 ?5 c5 e+ D3 @

60238(ed.5);am1;am2 & 60238(ed.6);am1;am2 & 60238(ed.7);am1;am2 & 60238(ed.8);am1;am2 & 60598-2-20(ed.3) & EN 60238: all editions $ }) C: ?) N4 q- Q

8 Z  b" r+ `" P, h- F0 fStandard(s):
IEC 60598-2-20/2010
% h; o& |6 w. P& f1 }7 YIEC/EN 60238 All editions
) f  x0 j2 O$ Q# U% C6 e# VSubclause(s): 20.7.6
6 A' e7 e7 `8 L9 g, HNo. Year PDSH 0958 2010
Category: LITE Developed by: ETF5 OSM/LUM
* C7 [- Z0 E8 j! C% o! ISubject:
, N1 @! g  z4 |" W( R! BSmall push in lamp
Small plastic lampholder
Mechanical test
Key words:
5 X6 K0 h" ^8 A4 \( y! O- Push in lamp
- Plastic lampholder
5 m+ l$ ~3 I0 X* D5 ^- Mechanical test
& R) U$ h" e+ C9 a0 H0 A, |, j7 D) XTo be approved at the 49th CTL Plenary Meeting, in 2012
Question:
9 M$ ]5 ^* t6 b& S, c1 yWe seek clarification on the correct method to perform a mechanical impact test for both mains rated
+ U2 L1 G& u# bvoltage, SELV and ELV lighting chains in respect of clause 20.7.6 of the above referenced standards.
The seems to be a difference between IEC and EN.
1/ IEC version standard references tests to 60238 clause 15 on three samples (push in type) clause 15.2
2 E4 o' Y) ~8 Y: O% `  D3 ?applies but which force?
2/ According to IEC version of the test E5 & E10 lampholder are subjected to a free fall test EN 60068-2-
% f. c) `# M# Z# ?+ \( J3 [/ N0 M0 b75. Clause 15.6 suggests a method of test to fix the lampholder to plywood. We have made some
  V' S4 \4 H. [  z9 k" m5 \7 Sdifferent tests by way of experiment in our Laboratory using the spring force impact hammer (better for
4 F8 X# p3 b. F; F* l1 {/ ~the test engineer) with the lampholder fixed against plywood and again without the
5 H! H/ v. [% V: m, Ylampholder being fixed at all. We find that when the lampholder is fixed most times the plastic
+ {. x: @1 ^7 j/ q1 O' olampholder cracks which can result in the live contacts becoming loose within the lampholder. What is
; H( J, H4 _  R$ V9 r% Athe correct test and lampholder support method to make according to IEC?
3/ According to EN the test is again referenced to 60238 but is modified by Annex ZB. Its says in annex
" Q, r4 K) v' c/ L4 Y$ ZZB the tests don’t apply to E5 but what about push in?
Decision:
1/ 15.2 is not applicable to push in type lampholder. 20.7.13 takes over.
. d6 h9 R9 }# t9 k2/ Pendulum hammer applies to E14 and larger lampholders; E5, E10 and similar small push in type
lampholders shall fulfil the tumbling barrel test.
3/ Small push in type lampholders are equalised as E5.

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