|
|
|  DSH 591/06
0 t( ?' Y2 u. m8 ^+ M4 w
7 z5 @& e2 O+ \9 D# ` | Short circuit and overload protection
3 r9 Y$ y- } a( d9 S | 15.3.2
5 H* J3 ^# K6 F2 q9 h% \) @, ~$ z0 \1 F | 61558-1(ed.1);am1. i. [& b* |+ E" z9 }
|
; [( G2 F7 x5 m# f# n( JStandard: IEC 61558-1/1997
& I. e) H9 }4 k: O5 |A1/19981 `* @& b- Q2 |1 U
Sub clause: 15.3.2$ m; d3 C7 q! L
Sheet N°: 591/06
% N' T/ ~7 p5 bPage: 1 (1) a. o8 U/ z+ d2 q' B
Subject: Short circuit and overload
, S9 |, x; {5 X: W1 J0 E( [protection) \+ f" N: ], J# R) x) v
Key words:% v* q, K# e, {( |1 ~
- Fuse current
& G0 b, {" T6 t- Overloading test$ u) K9 R% \+ s) N1 b& m! X
- Overload current
6 i: J5 k( u8 ^; JMeeting:
6 w# w- y8 X u, ^0 x% a" VDecision confirmed
: J! S8 T$ R$ [' v* h$ I% hat 44th CTL meeting
# U% B" L1 @6 W8 w) c' aQuestion: During the overloading test on the transformer according to § 15.3.2 the$ ^! |- N f D% f
temperature of the windings and their resistance increase and consequently the# u7 x. }* `! B0 T2 G8 A" J/ R
overload current decreases. Has the fuse current be readjusted to the original2 }8 R+ n4 ?6 d O" a7 B# P$ Q2 s
overload current during the test or no adjustment has to be made?
* e' Q! q6 W2 p9 lDecision: The fuse current has to be kept constant during the test.# K: n% l* W5 `" \( I% K
) A/ m$ e+ W: w/ p
# A O2 _ L" Y |
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
|
/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 2012-11-8 15:07
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