PDSH 897 Live metal parts projected from Edison screw caps

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PDSH 897 % L$ l! I. b; p- H

Live metal parts projected from Edison screw caps , L* P6 `2 k, B1 [& \+ H' _  ]

8.2.1

60598-1(ed.3);am1 & 60598-1(ed.4);am1 & 60598-1(ed.5) & 60598-1(ed.6);am1 & 60598-1(ed.7)

) Y5 v( u/ G9 }Standard(s):
; `& h4 x, z1 iIEC 60598-1 All editions
Subclause(s): 8.2.1
8 d( Y+ V8 m  y6 O' TNo. Year DSH 0897 2010
& F; }9 E& o7 BCategory: LITE Developed by: ETF5 OSM/LUM
* X5 ?: c0 c, U9 K1 RSubject:
Live metal parts projected from Edison screw caps
4 o3 [% ?  @! a, E; a* aKey words:
- Protection against electric shock
% J+ M. P+ o1 {! D, [& x- Live metal parts
5 R5 o4 G7 q8 o- B' b- Standard test finger
Approved at the 49th CTL Plenary Meeting, in 2012
$ b. T  ?7 y$ [& f- @Question:
During the test of protection against electric shock for luminaires, in some cases a live metal part
projected from lamp cap E 27 can be accessible with the standard test finger. When the compliance of the
; P% b6 `+ |2 _5 g& yused lamp and the built-in lampholder were checked with the relevant requirements of IEC 60432-1
& x/ `" U! g% t3 z, h- \# _7 b: |and IEC 60238, they were found as satisfied. But the live part accessibility within the luminaire was
! f0 W0 T# O9 z% n6 {caused by such a metal part projected from the lamp cap which is acceptable according to the sub clause
2.7.3 of IEC 60432-1. “On Edison screw caps any projection from the cap shell shall not project more
than 3 mm from the surface of the cap. See figure 1”. In this case there can easily come into existence a
cap and holder combination where the protection against electric shock cannot be maintained within the
6 W6 p3 b3 b8 j/ Y# `luminaire.
Can this luminaire construction be accepted?
Decision:
6 w" Q/ T8 {+ t, a/ o. ~3 DYes, the lampholder and the lamp shall comply with their gauges specified in IEC Publication 60061(for
9 F- R* k2 g$ s& _further information, see 60061-4, Sheet 7007-20-1).
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