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|  DSH 592/06
. _3 l$ K$ V, ~5 p8 @% _
b9 O9 y6 n1 L, J# n | Dust test for IP 5X and 6X as described in the transformer standard \7 [" K: w/ D) [1 o- U. n
| 17.1.1C, 13.4
. ]5 |6 O; U, L, C- m | 61558-1(ed.1);am1 & 60529(ed.2);am1. g4 k" U$ C, g3 D' r, j0 f
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' ]7 d: k! m& u4 ~ Y" }. u8 \
Standard: IEC 61558-1/19976 R+ Z* L' U p+ z; G, G$ A$ k
A1/1998
9 }2 U$ ~% c" _; GIEC 60529/19895 o0 b# H( w1 `" s) h9 ?
A1/19990 ]; n8 b6 y$ q0 R0 {4 @" r4 F
Sub clause: 17.1.1C/ _* d) n& `8 ?: \/ z
13.4( J2 r5 p* p$ D/ {; e/ ?
Sheet N°: 592/06- x7 i9 @5 K8 H% j
Page: 1(1)! L9 ~- D/ D; E2 B
Subject: Dust test for IP 5X and" S" w' n* ^& J+ K- h
6X as described in the
: |' p7 w5 r! V3 K4 Jtransformer standard
, v3 s. K$ u$ B# h: lKey words:+ H7 |+ b5 W3 P1 y" a& P }
- Transformers. A0 g5 j' O7 ]( E
- Dust test
8 f$ K4 O# @: p4 y, p% o- IEC 60529
( ]$ B N6 \! I9 xMeeting:; z; [/ |$ K0 ^* z# w: O. ~
Decision confirmed' B4 L" I2 c" a3 R2 g- c( t
at CTL 42nd meeting3 W/ A% O" r- E" E: ^& l1 ^
Question: In the horizontal safety function standard for degree of protection provided by$ V+ i* y; z# M
enclosures (IP code), IEC 60529, a description of the dust is given in subclause, i$ m9 c" E- e5 h3 Y: g( J
13.4. However, in the transformer standard the description of the dust divagate a% M; X. Z: k: M* l& C s- x
bit as the following wording is added: “and shall have a range of particle size
; g* B; g5 M. y: m" ]3 Mdown to and including 1 +m with at least 50% by weight less than 5 +m”. This& t! n" L' e; o7 K& r* s
more precise description imply that dust in the dust chamber must be changed
' a! o' }+ t, P( ^: n6 Nwhen a transformer is tested, this without any technical reasons. For the future,2 \% s- H6 q" p, F9 ^% j1 J: |
can we use the dust specified in IEC 60529 also for transformers?, U$ b" _7 S% I2 K$ M
Decision: The horizontal safety function standard IEC 60529 shall be followed, i.e. the dust
- C' ^# D7 f/ A% T2 g3 G4 dspecified in subclause 13.4 can be used.
# W' n% I% M1 Z% \* D$ r) u3 B+ C* j+ d/ J6 U7 K
" D2 d+ x( D8 x- E1 R6 b: z* F
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发表于 2012-11-8 15:04
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