|
|
|  DSH 482
7 M9 Q; x3 D ]$ S. E
5 D" B: u$ h* ~& w7 N3 p* H5 F | Leakage current
2 G- `2 R/ h- ^! I8 K6 o+ g! Z: S | 13.2
1 @ ?, [! v/ R5 M5 |* { | 60335-1(ed.3)6 O8 N) K0 d5 t! @% u( L) T
|
. ~2 {5 @! m$ T7 o F) ~3 tStandard: IEC 60335-1:1991, 3rd Ed.8 \8 A7 M" A) ~6 y* V; ^8 q& A5 u
Sub clause: 13.2
$ l# T5 {7 N& }! T( ?7 g+ c- {Sheet No. DSH-4823 z9 @% c" E% ^6 Q' l; q3 H4 ?
Subject: Leakage current
! Z. H0 X0 Q& A; A0 S BKey words: - leakage current of appliances with a 3-phase heating element and a 1-phase motor.+ h! i* ]$ H4 k2 R8 G9 o( i
Decision taken at the 40th CTL meeting 2003% S$ F- d) ~; c5 f* `8 z
Question:
, [" b9 ]% r* o& g( fHow is measurement of leakage current for appliances with a 3-phase heating element and a
& V9 f7 R: m! S! I9 d1-phase motor made?. H0 X# `& `, m- `# x
Rationale:
$ q5 y3 e9 ^: f2 X) V& a! I HSee question.* u8 v$ B0 I! T n) ?; ], _
Decision:2 m" @( J4 d6 v6 V
When using figure 6 or figure 7, only the switches in the phases other than the phase for the
J( E* \) Z3 a: tmotor are disconnected, if the construction of the appliance permits so. Otherwise all 3
* X. c% J b k: vswitches are disconnected in turn, the motor being separately supplied. Then the leakage# h y3 g2 D" L0 s0 H
currents are measured separately and the values for the motor and the relevant phase for the
6 Y2 j5 X! z! ^% q7 K. Y0 Vheating element are added.
1 }+ y* S8 u# C1 d$ f- ?
M, ]+ z4 S( I; k. @
4 e" @7 D( Y& i
- F& q5 N% l8 l$ V" Z R/ X& K6 i% ]' {+ w
|
本帖子中包含更多资源
您需要 登录 才可以下载或查看，没有账号？注册安规
x
|
/1 
|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 2012-9-12 10:49
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
抢沙发
千斤顶
显身卡