PDSH 957 Construction

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小型摆管淋雨试验机

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可程式恒温恒湿试验箱

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IEC61347/UL935镇流器热试验箱

灯具防风罩

IK冲击试验机

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VDE0620插头插座量规

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家电温升测试角

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家电125mm试验指

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 0 L$ Q* ?3 e- t, w

Construction ) a8 X, a+ B" l2 R4 E, z' g

20.7.4

60598-2-20(ed.3)

Standard(s):
  a: C2 e, J" J, s  y$ r4 P% V% M" eIEC 60598-2-20/2010
Subclause(s): 20.7.4
No. Year PDSH 0957 2010
Category: LITE Developed by: ETF5 OSM/LUM
Subject:
Construction
; Y" j9 S$ I& }, {$ V2 [! KKey words:
* H% k+ G2 P4 h% Q8 G$ r- Connections
+ D8 {( @! w9 j* ?2 q/ F5 p- Rope light
- Current carrying parts
To be approved at the 49th CTL Plenary Meeting, in 2012
! W& Q- `, n' \/ W+ H$ zQuestion:
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
electrical 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
* H) C" j2 F! E! s* Y4 t1 s( ]& u- {stuck axially into the bare wires after cutting the lighting tube. This is contact pressure through insulating
/ d7 C6 U0 X7 [% Q5 @- v2 z, Tmaterial. 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
our opinion, to the connection to the lamp only (e.g. connection to Edison lampholders with insulating
. F0 l! a. B$ S- [- j, [piercing terminals). Perhaps we can follow IEC 60335-1 - § 28.2 (contact pressure through insulating
material – 0,5 A limitation for the current). We have also informed our National Standard Committee about
the matter.
2 j- r2 _( T3 `% n8 HDecision:
: b& }# w8 n7 t; ~The connection is not acceptable due to the requirements of Section 15 of IEC 60598-1.

6 A$ E$ N5 i% H" q