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本帖最后由 小米 于 2012-9-16 16:41 编辑 * U- ^$ N9 j% {9 q; s$ Y
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|  PDSH 8971 s- a! F3 O' h( B
| Live metal parts projected from Edison screw caps! l' ^+ ^# [. t
| 8.2.10 Q0 O% j& D3 b z) \ V( E6 ~
| 60598-1(ed.3);am1 & 60598-1(ed.4);am1 & 60598-1(ed.5) & 60598-1(ed.6);am1 & 60598-1(ed.7)
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$ W5 M* G" Y7 _. j/ pStandard(s):
( }7 q7 T( F* o: ?7 UIEC 60598-1 All editions
9 b4 L) _: T. K. LSubclause(s): 8.2.15 g0 j2 [) m7 x+ c* h. O% y
No. Year DSH 0897 2010" N/ b" a! z J3 N
Category: LITE Developed by: ETF5 OSM/LUM8 x% O! Z7 a" v
Subject:) F x. C( x+ r' D3 s
Live metal parts projected from Edison screw caps7 H/ g3 [3 \6 r
Key words:3 z7 J0 c/ W3 T3 e% U
- Protection against electric shock( C+ @4 F( U* D; R/ B% T4 I
- Live metal parts" c4 M5 Z9 A) M0 J0 G7 n5 R
- Standard test finger) F/ W9 [/ w& \6 [( b+ Z' I
Approved at the 49th CTL Plenary Meeting, in 20127 c( h4 @: z# M- j. z9 @" ]
Question:! M; m" h2 O2 P e0 B
During the test of protection against electric shock for luminaires, in some cases a live metal part
* X2 s r+ L* e! p! D: Rprojected from lamp cap E 27 can be accessible with the standard test finger. When the compliance of the, F" `. v5 ~; Y5 {) |& h
used lamp and the built-in lampholder were checked with the relevant requirements of IEC 60432-1
& {+ W: A5 ?# J' p9 M" t' T q5 |and IEC 60238, they were found as satisfied. But the live part accessibility within the luminaire was
. n1 g4 P# P6 y2 N9 _8 s$ q' hcaused by such a metal part projected from the lamp cap which is acceptable according to the sub clause& U! d [" `4 z `3 |3 O
2.7.3 of IEC 60432-1. “On Edison screw caps any projection from the cap shell shall not project more3 A' Q' ?: A j I
than 3 mm from the surface of the cap. See figure 1”. In this case there can easily come into existence a
) v; I5 N2 |& w" r" d5 I- qcap and holder combination where the protection against electric shock cannot be maintained within the: r3 F) b: o( X1 \
luminaire.. X; S# O- L8 u2 t
Can this luminaire construction be accepted?
* A' m5 N$ c! U. q& HDecision:9 |' ^, n" o: U; P5 s
Yes, the lampholder and the lamp shall comply with their gauges specified in IEC Publication 60061(for
8 ?" D) _# I v4 l2 g6 O/ C' Vfurther information, see 60061-4, Sheet 7007-20-1).* g* H x/ v$ p( s" ?
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发表于 2012-9-16 16:40
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