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|  PDSH 1023& e! ]/ A6 ~5 D1 P
8 _ P5 J" P' [; i# S4 x$ I& i | Dust test for IP 5X and 6X as described in the transformer standard
# i% b* x6 J# ~- v. H+ c) K | 17.1.1C, 13.4
! Z! s4 |. T! n | 61558-1(ed.1);am1 & 61558-1(ed.2);am1 & 60529 all editions: ^1 x2 N8 S4 t4 w _% F
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; W1 V+ P0 T1 r8 q, h( NStandard(s):1 u, J& R; J3 [8 `' @, H3 P
IEC 61558-1
$ h+ B! ^! L3 X' z! DIEC 60529
! s7 X" |' V, j9 {* _2 b( Y9 }3 jAll editions. _* ^9 j: p2 m
Subclause(s):8 r7 b9 ~1 m0 d, H$ t- f
17.1.1C
* ], J f0 o5 z1 f8 b) C13.4* @- q. M+ q* s* h) f2 t
No. Year
4 R6 m2 t7 Q8 b5 L; TPDSH# V: f( [6 d( D+ b
1023 20109 x9 Q. q W; Y" Q) H
Category: SAFE Developed by: ETF5
9 [7 z8 j" R) f8 |1 N! ]OSM/LUM- I* t' }, |9 m
Subject:& C2 X. L% }2 ]
Dust test for IP 5X and 6X as
2 G# c. a# t' R+ Sdescribed in the transformer* ]3 `4 M* K2 [- Z" R& s# ~
standard! L- D4 }7 S4 T5 g7 x- V
Key words:' a" K$ B* S/ w' ] N
- Transformers
/ e B' i+ [+ ^$ z$ I4 z- Dust test6 o/ A' F, g M2 ~$ u
- IEC 60529
% i: u( E" U) _To be approved at the 49th: L: \0 E+ F3 j% r) w
CTL Plenary Meeting, in 20128 [% {6 C5 R$ _: b- n" c
Question:
8 F" G$ R; B ]& A( J+ [% \In the horizontal safety function standard for degree of protection provided by enclosures (IP code), IEC6 M P4 g# b" o) }, j7 L# T( U5 e
60529, a description of the dust is given in subclause 13.4. However, in the transformer standard the
9 ^! R# G3 H- Kdescription of the dust divagate a bit as the following wording is added: “and shall have a range of particle
8 [ P8 X% L& h) x9 Q' |size down to and including 1 μm with at least 50% by weight less than 5 μm”. This more precise
4 X) Y) t# ]/ R$ }description imply that dust in the dust chamber must be changed when a transformer is tested, this without a% Q5 @ u* U5 l# b" d
any technical reasons. For the future, can we use the dust specified in IEC 60529 also for transformers?
( P9 O& p0 A. [8 FDecision:
- z* a# y- \( Q; c8 YThe horizontal safety function standard IEC 60529 shall be followed, i.e. the dust specified in subclause
/ x/ u, H: Q- O8 S! r13.4 can be used.- f+ B0 H. S6 F* X2 d [$ g- T! m
; C2 Q+ l# a% l. H3 W6 w& y
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发表于 2012-11-8 15:14
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