|
|
M0 t! f- |1 [
* h" b) }0 g( O+ d2 @/ I! R$ [ DSH 359
# K. v& \6 ~! N1 W+ W2 B6 F | Mains Transformers
& A5 N6 }1 W( F& A | 14.7
8 i" G0 ]6 g4 {; Y | 61010-1(ed.1);am1;am29 v4 c+ H; X2 A% E9 }6 W
|
6 M! h" {3 }. e! [' [/ z( k3 D8 \2 o+ v6 w( t
Standard:3 f/ _& K5 d4 _- C
IEC 61010-1:1990 +A1:1992 + A2- l q3 D% Y E8 u
:1995
, @/ q( n2 F$ k( d) m% ?Sub clause:
5 E7 v+ s6 _( P5 ]6 ~9 \3 Q14.7) @4 B3 U) b T4 E
Sheet n. 359! d- v, ~ R4 q R; h1 b+ O4 ?
Page 1(1)
6 ?# D2 z$ |, K( b/ VSubject:
' q. t* E& F' P3 s2 y7 zMains transformers
( c5 y: u' u4 m% i, H& T5 f3 y5 @- NKey words:9 W7 [9 m9 ?! V4 J/ H
- Overload
8 A: c: q9 ~3 b/ x% u- Temperature limits- U, |2 e1 @( {8 g7 W
Decision taken by$ A+ x. f' q9 Q
ETF3 and confirmed
5 G! Q+ a3 ~) H5 X9 I X; |by CTL at its 38th* b {! @3 R1 q9 w
meeting, in Toronto
" m/ @2 ~* b1 t& eQuestion:$ q T; J) }: j+ V
1. What temperature limits are used?
8 W/ X/ _! C1 H7 {' r% t: d2. The test specifies that the protective device is left in circuit but this will render the test' ]+ z& J( R6 O" }
impractical if the device is a fuse, which may rupture in less than 1 hour. So how do
8 g5 [' E9 Y( D2 g6 @) F \/ elaboratories perform this test?
6 h O2 a7 B8 m3. "Directly Connected" can be seen as in many ways, can the laboratories share their
4 M! w4 i5 F8 I5 U+ upractice?2 v/ s6 J( O6 \3 ^ O3 }
Decision:& G8 X/ J$ ^; g0 d. e
It was agreed that;8 e& O9 L* A7 ^
1.Table 4 'Motor temperatures' should be referenced.
2 M8 F C& ^1 R1 f! U2. The test circuit should be arranged such that the test can continue for 1 hour.
# n( u( V* n$ `3.The fuse should be connected such that no single fault condition between the transformer
p- c1 C1 N+ @" W sand the fuse should cause a hazard., E' ? k6 d3 m- [+ V% e4 t
. J+ m# i# y9 s/ E0 ~0 q, n& v# \8 _. A$ m) K8 |# c
6 a& D9 |% |) X" `7 w I4 | |
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 2012-9-18 12:35
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