安规网

标题: DSH 592/06 Dust test for IP 5X and 6X as described in the transformer standard [打印本页]
作者: 小米    时间: 2012-11-8 15:04
标题: DSH 592/06 Dust test for IP 5X and 6X as described in the transformer standard
DSH 592/06. B. G  r6 u( K% ~+ p$ X+ {
) ~$ _; |# H+ f7 o" p
Dust test for IP 5X and 6X as described in the transformer standard
0 x% r. e/ y  I/ A% s; Q2 q: b		17.1.1C, 13.4# j' R2 |: c7 r' r
61558-1(ed.1);am1 & 60529(ed.2);am1
# I" x" n: r8 a

+ T" M0 w- O- z& ?# EStandard: IEC 61558-1/1997+ X. E' P8 R1 y
A1/1998
% K7 ~: S! p+ T" U, r1 vIEC 60529/1989" B) E9 y" q  p* X; y& e! G
A1/1999- o+ e( e& s: {1 y
Sub clause: 17.1.1C
! ]% d7 R: U% i% X4 m13.41 r- i1 L8 O" d2 m6 h
Sheet N°: 592/068 t  n4 G, W6 Z  ~' x8 I, \" L
Page: 1(1)
2 Z6 S( {; e0 n+ qSubject: Dust test for IP 5X and
6 Z: J8 b1 o9 j4 S2 e$ n" L9 @6X as described in the
% Z# O9 v3 _0 I7 m5 J; mtransformer standard
/ u' a( ^9 D" B1 }Key words:
+ o2 |1 }; r  F) `: y  ^' i- Transformers
; w  j- J) w/ D- Dust test1 k3 q/ b+ L% C# Y
- IEC 60529
+ n' ^/ x: U# F) YMeeting:1 ?, l6 F' h2 e2 v9 g" P* f) \
Decision confirmed  I( e4 S. u/ B; b
at CTL 42nd meeting
: B  y: r! r* E& F* L* pQuestion: In the horizontal safety function standard for degree of protection provided by
  R/ W! z5 [& Q6 K) Y% xenclosures (IP code), IEC 60529, a description of the dust is given in subclause6 y+ T: X, _  ~9 v8 M' J
13.4. However, in the transformer standard the description of the dust divagate a
6 k+ o' m/ i+ p1 C: ^2 \! S( Pbit as the following wording is added: “and shall have a range of particle size. E' P8 P* G  r/ d" U
down to and including 1 +m with at least 50% by weight less than 5 +m”. This
1 A2 W4 S, O. `5 fmore precise description imply that dust in the dust chamber must be changed
! \" c$ f4 n( d( ]- Pwhen a transformer is tested, this without any technical reasons. For the future,7 h% N. A8 Q# E& r% A) W
can we use the dust specified in IEC 60529 also for transformers?
  ?( h2 ?" l: [; Z; IDecision: The horizontal safety function standard IEC 60529 shall be followed, i.e. the dust
  J' L+ c% A( nspecified in subclause 13.4 can be used.6 Y+ n0 h, g1 _0 H4 z1 U8 Y$ u
  A7 w" X7 W1 {# h' W  K# K+ G
[attach]77262[/attach]7 ~8 Z  e6 x1 s0 x. |8 M9 v




欢迎光临 安规网 (http://bbs1.angui.org/) Powered by Discuz! X3.4