PDSH 897 Live metal parts projected from Edison screw caps

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PDSH 897

Live metal parts projected from Edison screw caps

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)

; e# N7 j  W0 J* N9 h( G' pStandard(s):
$ U6 r, A: p( Y1 a1 k" }IEC 60598-1 All editions
8 V8 Q8 G" b$ WSubclause(s): 8.2.1
7 N1 Q: i% \. v1 U( ~3 M# BNo. Year DSH 0897 2010
3 D8 t2 f! }) |4 |% X' O# xCategory: LITE Developed by: ETF5 OSM/LUM
% S% w# B5 X& xSubject:
2 H9 ]" ~, V5 }Live metal parts projected from Edison screw caps
1 Y3 z/ w  p$ O. p: CKey words:
7 L" ~; X) D! n- Protection against electric shock
- Live metal parts
! V( g7 E4 L9 z5 |, F7 }+ v- Standard test finger
+ J/ t: b1 D$ R$ Y5 B+ AApproved at the 49th CTL Plenary Meeting, in 2012
$ h6 ^& g! I" Y8 pQuestion:
During the test of protection against electric shock for luminaires, in some cases a live metal part
" c. w; K* s7 o4 Eprojected from lamp cap E 27 can be accessible with the standard test finger. When the compliance of the
used lamp and the built-in lampholder were checked with the relevant requirements of IEC 60432-1
and IEC 60238, they were found as satisfied. But the live part accessibility within the luminaire was
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
: B' K- Q/ I, r. N0 [% kluminaire.
Can this luminaire construction be accepted?
/ m+ K+ A& j0 f1 [8 sDecision:
5 o0 S, K3 Y" G% r" O" X% v) ?Yes, the lampholder and the lamp shall comply with their gauges specified in IEC Publication 60061(for
further information, see 60061-4, Sheet 7007-20-1).
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