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|  PDSH 1023
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| Dust test for IP 5X and 6X as described in the transformer standard- G- }; q3 b$ q: G! s9 k
| 17.1.1C, 13.4
( T! H1 D& f% M | 61558-1(ed.1);am1 & 61558-1(ed.2);am1 & 60529 all editions
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Standard(s):
+ e: w4 P" G, A5 G# q, T; Q. XIEC 61558-1
. D) I1 r7 ~9 `3 @& O# f/ ?IEC 60529
' n" _2 I7 r, I; F, pAll editions
" f( ]' R0 F3 T: U9 h6 F6 HSubclause(s):
! z* p. J( D) y' Q7 z. H17.1.1C
4 W: f" `& u2 F4 C/ b13.4
( b" D3 h# N' P3 i$ J4 ~No. Year
# Z) U* C. q2 O6 EPDSH8 R& o% [5 S2 t9 E/ m9 w! ~6 F
1023 2010! \! L) j d6 A: q @6 I: G
Category: SAFE Developed by: ETF5
2 {! R9 @; R! s1 sOSM/LUM
$ O8 N! ^* n/ ?! Z2 G, DSubject:' V1 i9 [. C: j0 Q! y( }
Dust test for IP 5X and 6X as
- f6 O$ Q" W- y$ J: Qdescribed in the transformer% k" w& i" n3 s" N5 W
standard, x+ w# ~2 u6 D! k: o" H/ D5 X
Key words:
6 O, s7 U+ |8 c% a4 x) R* C- Transformers
. A- K" V E" i" d- Dust test, {' S7 W" Q3 |+ ]) n9 d' }& m i! j
- IEC 60529; f8 O* S0 Y4 j9 h6 v0 q" y
To be approved at the 49th
# ^3 z. y, m5 b a0 ECTL Plenary Meeting, in 2012: M- ^: k3 g3 j6 K
Question:# K5 c6 Z: j! X
In the horizontal safety function standard for degree of protection provided by enclosures (IP code), IEC+ `4 O" ~8 e$ d/ j
60529, a description of the dust is given in subclause 13.4. However, in the transformer standard the
. A( I# b, F3 \! X$ v' }6 v2 E9 `description of the dust divagate a bit as the following wording is added: “and shall have a range of particle1 l) m+ Q, W, Q) N- B! h5 Z4 f M+ q
size down to and including 1 μm with at least 50% by weight less than 5 μm”. This more precise' Z/ z) E% ~2 t
description imply that dust in the dust chamber must be changed when a transformer is tested, this without3 Q- o7 P3 N4 f5 f( Q9 g3 R
any technical reasons. For the future, can we use the dust specified in IEC 60529 also for transformers?6 `" E3 T$ s+ z7 d3 i/ L" D" m* \0 `
Decision:
3 ? A( B2 G" S7 sThe horizontal safety function standard IEC 60529 shall be followed, i.e. the dust specified in subclause
: o& l; o; _& P9 z13.4 can be used.# v0 u( G- N$ T! ]0 U% q4 n
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发表于 2012-11-8 15:14
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