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|  DSH 592/064 D. B# Q& Z2 m' l
$ f& G A4 z* T) D o' U | Dust test for IP 5X and 6X as described in the transformer standard; Y5 _3 D7 _5 }
| 17.1.1C, 13.4
8 S4 J' N; K3 h# `$ h/ f1 A | 61558-1(ed.1);am1 & 60529(ed.2);am16 {+ D# P8 m: ~0 U
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. w, D$ g9 z3 Y3 F6 D1 v7 [& [# UStandard: IEC 61558-1/1997
9 A" ^4 ]' M' ]; b+ N0 L8 @A1/19982 p# u+ H& @& b( f ]: a) e
IEC 60529/1989
4 \5 t, G0 U. Q* R8 _% s% WA1/1999
7 ?: h3 [" J9 P/ C1 u; o w" jSub clause: 17.1.1C
Y1 S0 {# m- I/ V6 `13.4
5 s+ _( q( I& aSheet N°: 592/06
+ v" o* N' z( v' n3 fPage: 1(1)
% j, {! _/ B o* y& f1 Y- qSubject: Dust test for IP 5X and
2 [0 g G: b. v# z$ |+ T7 {6X as described in the: M) w7 \ R4 b# {/ A
transformer standard' V+ i! \7 F( Z' O# m* `/ @" z) I4 q& b1 F
Key words:' Z/ P, [- N$ x @
- Transformers1 p9 w; {9 n+ A4 } V P: M
- Dust test
% j! X5 d6 p" O. N; B0 p- IEC 60529- i( G9 M( n* t- I) r
Meeting:
$ z9 L* L2 T- z4 v5 r, J8 kDecision confirmed1 F' S4 r7 w4 ]7 n5 v9 |2 X
at CTL 42nd meeting
+ d9 o( f7 T. I8 H6 f: LQuestion: In the horizontal safety function standard for degree of protection provided by
# M6 _( L/ [; @- N" aenclosures (IP code), IEC 60529, a description of the dust is given in subclause
1 ~' d6 s: F* ?1 W8 x+ B13.4. However, in the transformer standard the description of the dust divagate a# E; ^) N! t7 z- ?* D6 n6 ?2 A
bit as the following wording is added: “and shall have a range of particle size
6 M* U5 j+ E2 W; ?$ U0 m2 Ydown to and including 1 +m with at least 50% by weight less than 5 +m”. This7 f# a+ h( ^6 ^4 i9 j, G% S
more precise description imply that dust in the dust chamber must be changed, U% \" o2 F0 D* R9 o4 S4 G+ @" z% v
when a transformer is tested, this without any technical reasons. For the future," ^) S8 b. A/ O8 {
can we use the dust specified in IEC 60529 also for transformers?+ h: p" \2 s! c3 ]1 e
Decision: The horizontal safety function standard IEC 60529 shall be followed, i.e. the dust
7 Q4 |6 m6 G' F% f. Z1 K* c1 Ispecified in subclause 13.4 can be used." B% X5 P: r4 x9 @
6 g( }0 [4 U) s0 p$ m% K' O/ m9 g9 ?; a: p
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发表于 2012-11-8 15:04
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