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| PDSH 958
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c4 T9 I& n! }2 M/ N& r | Small push in lamp Small plastic lampholder Mechanical test3 e4 \& v$ ]; ^- ]9 g- m, ?: e
| 20.7.63 a2 X; e$ d o$ [" a% S7 f( y8 L
| 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 editions4 L1 U! k4 }' G
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; q5 b0 o" ~' H, m! x9 _Standard(s):
5 V; L7 T9 h# A# e3 A6 bIEC 60598-2-20/2010/ l) X3 Z9 p; W" ?
IEC/EN 60238 All editions! c$ R7 d8 J$ v" |& j0 i" |1 ~
Subclause(s): 20.7.6
7 Y" G; S" Z3 J4 ~/ v3 D2 R4 }No. Year PDSH 0958 2010) ]$ L, `- \3 ?1 j, [2 ]7 x0 h# j3 N
Category: LITE Developed by: ETF5 OSM/LUM i2 ?$ W3 n2 b$ A0 W+ H
Subject:
' _& m' o5 \- eSmall push in lamp
. B7 X L4 G) X& t7 JSmall plastic lampholder
$ m2 ~8 |* v' P( q7 z0 s$ z# O, o, bMechanical test; T8 t/ i. W# d, A0 Q$ S
Key words:
+ P r. ?2 u" q H9 T- Push in lamp
; ^" j5 l) f3 Q- Plastic lampholder
0 l' v. q3 I! ^ M- Mechanical test, }/ M' t; w! X" X d
To be approved at the 49th CTL Plenary Meeting, in 2012! v3 M' _" r: N
Question:
8 d1 ]1 y7 [5 T* NWe seek clarification on the correct method to perform a mechanical impact test for both mains rated
, T6 ~7 |+ [) W( gvoltage, SELV and ELV lighting chains in respect of clause 20.7.6 of the above referenced standards.
, R0 i3 ]& R( k3 d0 k& E8 PThe seems to be a difference between IEC and EN.$ ?3 D% ~. d' g6 R
1/ IEC version standard references tests to 60238 clause 15 on three samples (push in type) clause 15.2
9 r* Q: ~# X* V5 Z7 M7 Qapplies but which force?- g: {8 d9 e# f( Y
2/ According to IEC version of the test E5 & E10 lampholder are subjected to a free fall test EN 60068-2-5 u2 K, d/ Q3 J
75. Clause 15.6 suggests a method of test to fix the lampholder to plywood. We have made some
" X z* {- W+ Q+ ]. \different tests by way of experiment in our Laboratory using the spring force impact hammer (better for# c4 Q# x7 t4 F3 E
the test engineer) with the lampholder fixed against plywood and again without the) ~; Q1 w1 P- ?) n0 S1 N; H! d
lampholder being fixed at all. We find that when the lampholder is fixed most times the plastic. L2 T% L8 w+ e7 h8 M
lampholder cracks which can result in the live contacts becoming loose within the lampholder. What is
4 O7 {3 }3 t2 Ithe correct test and lampholder support method to make according to IEC?
" o/ ]* u# ]* q9 t8 R& Z3/ According to EN the test is again referenced to 60238 but is modified by Annex ZB. Its says in annex& @0 ?. n4 N! _7 O- N, d# k
ZB the tests don’t apply to E5 but what about push in?
3 m1 j A" e1 x2 s1 m3 lDecision:& H/ d6 Z) T7 z2 Z. m3 u. y
1/ 15.2 is not applicable to push in type lampholder. 20.7.13 takes over.% {$ Y9 s) ?1 L& G9 S2 p
2/ Pendulum hammer applies to E14 and larger lampholders; E5, E10 and similar small push in type
/ ?. z3 d' B+ Blampholders shall fulfil the tumbling barrel test.
3 G# T1 b( }6 K- Q/ r! k! \5 b' [- l# Q3/ Small push in type lampholders are equalised as E5.! N1 i( F1 K. f" \" b. s
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