|
|
|  DSH 591/06
/ P+ a H( k) l' p
% h( O& n& b7 h R; P: m | Short circuit and overload protection) d e8 U, [ @: _
| 15.3.2
8 W( w, R4 ?. B | 61558-1(ed.1);am1
7 G: }% f: k( \2 B# E; S |
" q3 s {: V! _; K3 c1 p) L) ~Standard: IEC 61558-1/19976 A9 O8 a6 H1 X/ X
A1/1998
( p% k! L$ y/ L; r& T* BSub clause: 15.3.2+ Y0 l1 S, I0 ]1 Q
Sheet N°: 591/06- q" Y' i( I& }' u3 j# a
Page: 1 (1), R7 `8 T4 s; m' H1 J
Subject: Short circuit and overload6 D% N+ U8 o# P$ r2 z& X
protection( \) X% A' W+ V/ {
Key words:
. l/ H I9 D! D# s" }9 S7 @& d- Fuse current
: X4 S: |7 C4 M9 L- Overloading test% S; V5 u9 l! R. o7 N1 R' ^& ?! O
- Overload current, x' e- H. }& A w8 k: F+ b% j: X P
Meeting:3 o5 I2 S- Z4 K/ x4 ^5 I; R
Decision confirmed5 I. _2 k0 z2 }8 b9 T
at 44th CTL meeting' [9 t4 T" [( t. G0 ^1 M
Question: During the overloading test on the transformer according to § 15.3.2 the1 i0 | i: g& P6 }- E# y! N
temperature of the windings and their resistance increase and consequently the: _ Z) ~* F# q
overload current decreases. Has the fuse current be readjusted to the original
5 |; @* h9 L5 n( p* k" Coverload current during the test or no adjustment has to be made?
8 _" l; r9 ^. B1 P5 ~Decision: The fuse current has to be kept constant during the test.' T/ |" v7 p8 |, m, F" ^! y
+ T* m3 p1 E; g: |* k0 C2 X. z: w, N& `6 Z$ y
|
本帖子中包含更多资源
您需要 登录 才可以下载或查看，没有账号？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 2012-11-8 15:07
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
抢沙发
千斤顶
显身卡