PDSH 957 Construction

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广东安规检测
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小型摆管淋雨试验机

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E12灯头量规

无绳壶无绳电熨斗插拔寿命试验机

IEC60335试验指甲

PDSH 957

Construction

20.7.4 6 L1 @6 j- K- B' E

60598-2-20(ed.3)

$ l& `- g- S& S  {1 g: b7 sStandard(s):
5 W, E1 @$ y: LIEC 60598-2-20/2010
, G0 o! B+ _  n1 z5 tSubclause(s): 20.7.4
- g7 q) K! l1 R& S. _No. Year PDSH 0957 2010
Category: LITE Developed by: ETF5 OSM/LUM
Subject:
Construction
Key words:
% v3 a+ ?: s# i9 I- Connections
- Rope light
- ?+ Z% k9 P3 ?8 M3 u" i; P- Current carrying parts
To be approved at the 49th CTL Plenary Meeting, in 2012
7 s5 _# S: p+ }! ^6 }: iQuestion:
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
) z* V' k; t) b6 Telectrical connections and current carrying parts. Sub-clause 4.11.1 (contact pressure through insulating
material) does not apply. In a rope light connecting system we often have connections with pins that are
  D+ G9 H, z, q" m3 Nstuck axially into the bare wires after cutting the lighting tube. This is contact pressure through insulating
material. With about 16 W/m and a length until 100 m we can have a current more than 6 A at the
connecting part. With those connections we have a high risk of fire. § 20.7.4 of IEC 60598-2-20 applies, in
$ V/ B; `# [8 K# v+ wour opinion, to the connection to the lamp only (e.g. connection to Edison lampholders with insulating
1 v- c7 M, n4 y0 ~- |9 z+ ]. Lpiercing terminals). Perhaps we can follow IEC 60335-1 - § 28.2 (contact pressure through insulating
9 \; b/ O! h4 a3 P) Z7 Cmaterial – 0,5 A limitation for the current). We have also informed our National Standard Committee about
the matter.
Decision:
0 E0 a  _; r8 i7 [9 p# qThe connection is not acceptable due to the requirements of Section 15 of IEC 60598-1.


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