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|  DSH 592/06
; [ u" f) j* X9 u0 V( c+ r8 x: h) ?6 f; H5 c( B& I3 j- F/ O
| Dust test for IP 5X and 6X as described in the transformer standard$ [) S. ^; h: n5 q# v7 j
| 17.1.1C, 13.4
' I4 G' B1 a" W0 _ | 61558-1(ed.1);am1 & 60529(ed.2);am1
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$ s+ }( k9 C9 p% Y0 _- p1 @5 `1 Y
Standard: IEC 61558-1/1997% M! Z7 R7 F1 a
A1/19982 k+ T6 D/ D1 L! V* m: [# F! |
IEC 60529/1989
0 N% s/ A; x- R4 |% rA1/19991 ^6 f6 b- l1 z- i
Sub clause: 17.1.1C" }" \; q+ P+ ~4 o& [
13.46 O& I( b c; a8 |7 A: f
Sheet N°: 592/061 ~4 E) T0 ?$ b6 g
Page: 1(1)) T! }7 ] w1 Q* ~( x
Subject: Dust test for IP 5X and
/ L6 l/ a# \" i) p4 k6X as described in the5 s% Y: S$ i( y9 f7 T
transformer standard
2 _6 i$ K0 M' t% L5 F8 _Key words:
4 x, X. y1 C! Q9 l* W) W- Transformers, T$ t: s0 d! {+ y9 ~
- Dust test& r1 X7 N7 ~, a; b/ O1 ~1 ?1 ~
- IEC 60529
0 d$ M; q& u8 S x% rMeeting:
; G; ^" I5 x, yDecision confirmed
5 H: n9 m' W& B+ xat CTL 42nd meeting
' A$ W! M5 g. g- k2 O9 U0 [Question: In the horizontal safety function standard for degree of protection provided by# f8 n3 @/ `3 ?( U4 f- e
enclosures (IP code), IEC 60529, a description of the dust is given in subclause- A7 X5 X9 e7 x9 k& z6 w
13.4. However, in the transformer standard the description of the dust divagate a( g* C7 E( l4 G' D" R2 y: J* L4 o3 R
bit as the following wording is added: “and shall have a range of particle size
' k5 q0 s L0 p+ H9 Y7 a O$ }down to and including 1 +m with at least 50% by weight less than 5 +m”. This
) X; d% G. f+ o+ \0 ~more precise description imply that dust in the dust chamber must be changed" v" s5 x. b9 V8 L$ D. e8 ]. `
when a transformer is tested, this without any technical reasons. For the future,3 h) i2 |4 u2 x7 P9 e
can we use the dust specified in IEC 60529 also for transformers?0 z) r' z) g1 P' v- f0 a0 E5 t: @2 H
Decision: The horizontal safety function standard IEC 60529 shall be followed, i.e. the dust$ p$ F. I9 p9 x
specified in subclause 13.4 can be used.
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发表于 2012-11-8 15:04
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