PDSH 957 Construction

小米

广东安规检测
有限公司提供：

小型摆管淋雨试验机

IPX5X6X7喷水试验机

1000L恒温恒湿箱

各种试验指现货

可程式恒温恒湿试验箱

水平垂直燃烧机

自动卷线器试验机

耐划痕试验机

各种灯头量规现货

灼热丝试验机现货

GB1002插头量规

IPX1-X7淋雨现货

IEC61347/UL935镇流器热试验箱

灯具防风罩

IK冲击试验机

UL498插头插座量规

VDE0620插头插座量规

稳定性试验台

家电温升测试角

针焰试验机现货

热电偶焊机现货

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 ' E# e7 W5 O' J# B

Construction

20.7.4

60598-2-20(ed.3)

" p% |/ @3 Z! ^8 ?3 I4 NStandard(s):
8 l9 N) a/ @4 V6 L2 H+ B  LIEC 60598-2-20/2010
Subclause(s): 20.7.4
No. Year PDSH 0957 2010
. T  a# U1 o# |; M. lCategory: LITE Developed by: ETF5 OSM/LUM
Subject:
- @# f5 o0 F/ v7 g) bConstruction
9 l, H- e9 W$ B: L$ Z( l9 ?Key words:
- Connections
% y& Y6 ~/ I4 R0 Q- Rope light
7 p: ^8 h" u- ^" ]- Current carrying parts
: Q1 E% Z/ Y3 ]4 O- u5 {To be approved at the 49th CTL Plenary Meeting, in 2012
7 ?- {9 [, C- O; M* E1 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
- B8 Q% d9 y" t/ w5 W4 |8 ]9 |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
6 Z1 W3 w7 \# wstuck 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
our opinion, to the connection to the lamp only (e.g. connection to Edison lampholders with insulating
, y1 X/ e4 n6 \/ o# ?8 epiercing terminals). Perhaps we can follow IEC 60335-1 - § 28.2 (contact pressure through insulating
' @5 m& s6 \, z" B& Q5 Wmaterial – 0,5 A limitation for the current). We have also informed our National Standard Committee about
the matter.
Decision:
The connection is not acceptable due to the requirements of Section 15 of IEC 60598-1.

' x( X; R1 b  A5 ]/ T; `4 x" e& P
2 g, ]3 e( o- V) d+ ~3 Y7 Q