PDSH 955 E14 lampholder used in lighting chains

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PDSH 955

E14 lampholder used in lighting chains 7 Y* B8 y- f; v" Z

20.7.1 : W8 u& R8 P5 y4 X/ H( q

60598-2-20(ed.3) 2 P  S/ _8 r! N

Standard(s):
IEC 60598-2-20/2010
Subclause(s): 20.7.1
3 U9 ?4 p8 }8 E4 \1 g: b. ^( uNo. Year PDSH 0955 2010
Category: LITE Developed by: ETF5 OSM/LUM
Subject:
E14 lampholder used in lighting chains
) e6 m& A+ h* F- H  JKey words:
1 f0 Z7 k, _) W/ r- E14 lampholder
4 V9 p& K- L3 B. i- Lighting chain
9 U* O" m5 i, q- q: m- IEC 60238
8 `% U. j7 c# I8 i, iTo be approved at the 49th CTL Plenary Meeting, in 2012
Question:
- 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.
# b. j' L  E! O' F3 A3 T; t- Clause 8.2 of IEC 60238 requires that lampholder shall be tested according to the gauges 7006-30
5 P' _) h# w3 U; [6 [- p" m(7006-30A for candle lampholder) and 7006-31.
5 j4 S3 I& L6 G8 O7 ZIn the case shown in photos 1 and 2, the only possibility to fulfill the requirements with gauge 7006-30 is
+ U; K4 \9 a4 ^; f8 Q. q' a) Wto cut the gasket around the rim of the lampholder. However in this condition the lampholder does not
8 q* `3 O  W, V2 j" R2 E$ q1 a5 Yfulfill the requirement of 7006-31 for protection against electric shock. In the note after the fourth
% @! k- Y8 g/ t6 g. G& X4 k- A* ^paragraph of clause 20.12.1 of IEC 60598-2-20 it is written that the gasket may serve as protection against
7 L! T4 f4 B7 w5 I" T. `accidental contact with the cap of the lamp, but only for bayonet lampholder. So, it is not applicable to the
  O" }, O- b  A0 S( e/ \$ IE14 lampholder.
In the case shown in photo 3 the test with gauge 7006-31 gives negative result.
$ f+ Q, O  P4 e' P! bIn 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.
3 h: F( ]7 }; f3 T! w$ ZWe think that this lampholder used in a lighting chain is not in compliance with the standard due to the
requirement of clause 20.7.1. What is the opinion of the other laboratories?
) B7 a+ d/ O* I, d2 d' _Decision:
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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