|
|
|  DSH 654) ?2 n) g6 d. f! p% N" H8 X
$ u( Z+ s0 i% [
| Abnormal operation u8 w+ ^0 T$ X+ D* c5 [: Y
| 19.11.4.4
0 w3 _4 z5 r" z t. Z8 A4 d5 K1 C | 60335-1(ed.4)! g6 D' H, C1 Y, P, W8 P
|
% f+ X& k, O, z* y1 R# L3 X: L
Question:
6 i. i+ F9 { `, Q# \5 V4 j: ZWhen performing the tests of clause 19.11.4.4 (surge test), does the standard require the heating elements to be disconnected? Earthed heating elements in class I appliances are disconnected during this test.2 ~+ x" L, J$ S; W( {# J% l1 X
Can the test be omitted where the heating element is integrated into the appliance such that disconnection is not possible and, where due to the construction and the operating control system, it is not possible to operate with the heating element disconnected? The reason being when applying the test with the heating resistance connected, the insulation between earth
" [8 B) n2 I [, L/ vand the heating element is destroyed,
) [4 V0 K4 i9 @% T& v3 ?) Q {Decision:
: b1 P5 D, e' k/ o8 F) @Electro-mechanical components are not to be tested for failure in 19.11.4. However, if the failure affects the Protective Electronic Circuit (PEC), it shall comply with the requirement of the standard.6 m/ c, K d) S% R. a8 S8 l
P* x6 G* Q$ h6 J
9 W$ X& s3 k4 I. G
|
本帖子中包含更多资源
您需要 登录 才可以下载或查看，没有帐号？注册安规
x
|
/2 
|关于安规|小黑屋|安规QQ群|Archiver|手机版|安规网
( 粤ICP13023453-10 ) 
窥视卡
雷达卡
发表于 2012-9-8 14:17
收藏
分享
好帖
鸡蛋
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
抢沙发
千斤顶
显身卡