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|  PDSH 1023+ y2 `# ]- |; ^! u
8 }6 F _$ n/ t L) a; G1 c2 l | Dust test for IP 5X and 6X as described in the transformer standard, o( l. R3 I! j9 a" W* s2 |$ E
| 17.1.1C, 13.43 N. d0 K0 f& c
| 61558-1(ed.1);am1 & 61558-1(ed.2);am1 & 60529 all editions
7 ^+ I7 }- D [0 W |
+ k) S; H' p' MStandard(s):
8 m6 b8 U+ j% {5 ?) F8 lIEC 61558-1
7 c' g2 b; t3 T! w3 A8 X- bIEC 60529" q% y" y' ?8 G3 X* @0 Q" }' J2 c
All editions
! G8 h$ ?0 ^. L/ I: PSubclause(s):1 J9 P8 Z$ ` O5 F3 i
17.1.1C- [0 B' O! ~9 i, B; Z; O
13.4" m9 m/ x4 k7 \ h3 u z; G- v
No. Year/ W9 j; n& W* A% m9 V8 {
PDSH
8 L d9 L4 W) @8 D3 {1023 2010
3 j7 O# N; W m9 j# V) s) T8 QCategory: SAFE Developed by: ETF5
, x+ S0 a/ h" J5 i) eOSM/LUM; ]8 d7 N/ w* m* m5 q, w9 m
Subject:& e- ] K- ?" z- D
Dust test for IP 5X and 6X as* P. C' }# E8 E* K& G
described in the transformer5 i2 z- g# t( b4 N2 p. q
standard" H2 O. p. l1 v5 b$ t
Key words: E2 N0 b5 o) }1 K8 p& X/ K4 F7 I
- Transformers- }! b4 e6 K5 h0 }6 `
- Dust test
8 |" [6 m, r# w0 z* s* Y3 K+ Z- IEC 605295 ~2 K6 u/ B2 j! e
To be approved at the 49th% x" Q1 T* X1 j9 m( x* r
CTL Plenary Meeting, in 2012
5 S+ x9 R! ?+ BQuestion:7 j5 C; }9 i0 b k& T) H
In the horizontal safety function standard for degree of protection provided by enclosures (IP code), IEC$ D. n3 ?# j. r6 B2 Z6 Y1 @
60529, a description of the dust is given in subclause 13.4. However, in the transformer standard the
' h# j4 e* O+ w! hdescription of the dust divagate a bit as the following wording is added: “and shall have a range of particle8 D& N% e$ u. e, G
size down to and including 1 μm with at least 50% by weight less than 5 μm”. This more precise
6 t0 @$ c6 ^0 J0 Kdescription imply that dust in the dust chamber must be changed when a transformer is tested, this without5 W* k* {/ W2 R3 ~- W
any technical reasons. For the future, can we use the dust specified in IEC 60529 also for transformers?/ t7 w# {! @% |. r2 K
Decision:7 P9 o' V6 h6 ^/ B+ C- k4 I/ b
The horizontal safety function standard IEC 60529 shall be followed, i.e. the dust specified in subclause
( {4 }, |, J% q2 X0 r& R* @4 W. z13.4 can be used.7 O1 H% \! n8 H+ L( \7 o
, R6 i' U/ N3 [$ A9 V$ x/ h6 d' H5 w# e4 r% ^
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发表于 2012-11-8 15:14
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