PDSH 955 E14 lampholder used in lighting chains

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PDSH 955 0 L3 @5 N7 D( g! D, U: R 6 g# E  ]7 y; c  I5 G2 l! _

E14 lampholder used in lighting chains

20.7.1

60598-2-20(ed.3) : t; K3 c3 ^# Z+ M# e1 ~4 A' m

Standard(s):
IEC 60598-2-20/2010
% u  I$ \& _5 BSubclause(s): 20.7.1
No. Year PDSH 0955 2010
& A0 P, M2 C2 n8 j# `0 {Category: LITE Developed by: ETF5 OSM/LUM
Subject:
E14 lampholder used in lighting chains
+ e$ b! H8 p9 {! m+ gKey words:
" n: D7 Q( z* T( f- X- E14 lampholder
2 ^1 m1 X9 q7 m: }3 O- Lighting chain
- IEC 60238
' k# h+ O# Z  o, ~! n) nTo be approved at the 49th CTL Plenary Meeting, in 2012
  b! Y+ w; r, [+ d6 X$ mQuestion:
3 A. K+ E3 C+ a% d) G- c" |. ^- Clause 20.7.1 of IEC 60598-2-20 requires that Edison screw lampholders E10, E14 and E 27 shall
meet the requirements of IEC 60238.
- Clause 8.2 of IEC 60238 requires that lampholder shall be tested according to the gauges 7006-30
(7006-30A for candle lampholder) and 7006-31.
In the case shown in photos 1 and 2, the only possibility to fulfill the requirements with gauge 7006-30 is
to cut the gasket around the rim of the lampholder. However in this condition the lampholder does not
' D- x$ z* n) c: R! n( v9 p5 [& K, rfulfill the requirement of 7006-31 for protection against electric shock. In the note after the fourth
paragraph of clause 20.12.1 of IEC 60598-2-20 it is written that the gasket may serve as protection against
6 P- f' T; u7 |: ^8 q* W& f6 |" Waccidental contact with the cap of the lamp, but only for bayonet lampholder. So, it is not applicable to the
' D5 l; ^, f, q+ D! g& }E14 lampholder.
In the case shown in photo 3 the test with gauge 7006-31 gives negative result.
) H4 X8 A) p7 I4 T, WIn the two cases, the lampholders have been designed to accept E14/20 lamp cap only (and not E14/23x15
or E14/25x17). So, if the tests are performed with these kind of lamps, the test requirements are fulfilled.
8 o" a' K4 n) m4 A0 y$ K. E: qWe think that this lampholder used in a lighting chain is not in compliance with the standard due to the
8 g3 W! L9 F0 X% }% drequirement of clause 20.7.1. What is the opinion of the other laboratories?
9 j$ k/ b: Y. }# L1 F$ yDecision:
The lampholder can be accepted as part of lighting chain / luminaire. All requirements according to IEC
60238 as far as applicable have to be fulfilled and the gauge 7006-31 shall comply.
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