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本帖最后由 小米 于 2012-9-16 16:41 编辑 ) R) n0 f/ a$ V3 o
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|  PDSH 8975 _$ U x7 N4 Y3 t1 r
| Live metal parts projected from Edison screw caps. J' F. q( y' f+ I2 E5 H
| 8.2.1
7 @0 O. t2 P3 D' N p) j | 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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: j; p% K8 C/ {' k3 h5 @' B) _( CStandard(s):! g9 K' _$ `1 o d& ~. E) u
IEC 60598-1 All editions
; g, A7 Q6 d8 X, e7 f1 Z1 xSubclause(s): 8.2.1
1 S$ o" H$ l2 F% f6 K3 j$ z$ BNo. Year DSH 0897 2010
3 j8 A, }9 {* C) c3 d+ pCategory: LITE Developed by: ETF5 OSM/LUM
I9 p0 k0 F" ~( I* \5 c6 gSubject:& t. p- w+ J4 |. H0 ]! u
Live metal parts projected from Edison screw caps# J0 h9 N, Y+ B) `8 A
Key words:9 d b+ ? j- j8 `; [( t) j' k/ ^
- Protection against electric shock; F' p& F- @' Y' j
- Live metal parts5 a. D3 r" R4 {( A+ W# d" q
- Standard test finger
6 [" v2 p* A( u g' G) fApproved at the 49th CTL Plenary Meeting, in 2012) O) {5 k* a7 A# ?1 @6 j2 |, s
Question:; X6 X4 x- B5 c' M: s
During the test of protection against electric shock for luminaires, in some cases a live metal part
/ I U& y3 N( xprojected from lamp cap E 27 can be accessible with the standard test finger. When the compliance of the
" ^8 d& H# p) C1 L& Q) R, Vused lamp and the built-in lampholder were checked with the relevant requirements of IEC 60432-1
% z: b* h: r ]3 ?7 P0 a+ ? jand IEC 60238, they were found as satisfied. But the live part accessibility within the luminaire was, C* X* ]* l$ N8 ~
caused by such a metal part projected from the lamp cap which is acceptable according to the sub clause" t p$ a# x, ], M
2.7.3 of IEC 60432-1. “On Edison screw caps any projection from the cap shell shall not project more
5 M( Y3 C! y5 z& \" P# L& Wthan 3 mm from the surface of the cap. See figure 1”. In this case there can easily come into existence a! k. F: \: o# s! t: j7 i0 D
cap and holder combination where the protection against electric shock cannot be maintained within the
; V5 q/ x/ m# ?luminaire.
; F6 v" p9 m9 `/ R6 I1 [0 G p: t }Can this luminaire construction be accepted?) [' w, c' c7 G" E
Decision:, u, R$ o8 |/ D& o$ L% M* K: ?
Yes, the lampholder and the lamp shall comply with their gauges specified in IEC Publication 60061(for
8 Z$ h" f* W. F* zfurther information, see 60061-4, Sheet 7007-20-1).
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发表于 2012-9-16 16:40
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