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|  PDSH 957" h7 u. D5 ~" f/ A" B
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| Construction
) o4 o8 U; C- |! o | 20.7.4/ z% y! M( \; g1 ~3 g8 e
| 60598-2-20(ed.3)
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Standard(s):
9 I& U0 v: d# tIEC 60598-2-20/2010& M0 l/ V8 ]3 Z) e( I" ^
Subclause(s): 20.7.49 ?! C, E3 J* p7 l S7 J6 {5 I) N& @
No. Year PDSH 0957 2010
% f7 Q7 p/ V; f3 YCategory: LITE Developed by: ETF5 OSM/LUM0 k- x1 c, m% I" Q1 T
Subject:8 @6 p+ m. y" x8 b
Construction
! H7 f' O4 j. k9 L2 q: M9 VKey words:
) G( U1 G# ]8 V! T* @- Connections
9 `3 r" z8 l5 v6 |- Rope light# ?. P+ l% d1 n% @& b8 D
- Current carrying parts5 i. y7 _: f r/ }
To be approved at the 49th CTL Plenary Meeting, in 2012' n: L7 ~/ N) p- `3 N) D' ]
Question:
3 n, h1 L3 q7 i- w* F1 S9 w" ]. @In clause 20.7.4 of IEC 60598-2-20, it is mentioned that only 4.11.4 and 4.11.5 of clause 4.11 apply for
0 ?9 ^$ K% g6 j/ Kelectrical connections and current carrying parts. Sub-clause 4.11.1 (contact pressure through insulating' K8 ?4 b3 f1 |# s A3 H. K. e5 F
material) does not apply. In a rope light connecting system we often have connections with pins that are3 g, R3 V5 K2 l8 v, U7 ~8 Z3 s
stuck axially into the bare wires after cutting the lighting tube. This is contact pressure through insulating
$ s: a/ A; X* L1 M9 M3 u' hmaterial. With about 16 W/m and a length until 100 m we can have a current more than 6 A at the
1 o0 y) e/ \0 d+ o& Dconnecting part. With those connections we have a high risk of fire. § 20.7.4 of IEC 60598-2-20 applies, in
6 K3 L+ k# \9 |* w/ N9 l: mour opinion, to the connection to the lamp only (e.g. connection to Edison lampholders with insulating
7 G: a: c/ V4 a8 V. W( g; Xpiercing terminals). Perhaps we can follow IEC 60335-1 - § 28.2 (contact pressure through insulating
( i7 u$ C S+ j9 d; |" s4 K& vmaterial – 0,5 A limitation for the current). We have also informed our National Standard Committee about
9 |- S# s: V* T* t! ]# Gthe matter.0 f1 r% i1 K# {7 u* _4 n
Decision:# ?2 N' H( A; S" v2 ]" F/ l
The connection is not acceptable due to the requirements of Section 15 of IEC 60598-1.
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发表于 2012-9-16 15:27
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