标题: DSH 592/06 Dust test for IP 5X and 6X as described in the transformer standard [打印本页] 作者: 小米 时间: 2012-11-8 15:04 标题: DSH 592/06 Dust test for IP 5X and 6X as described in the transformer standard
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Standard: IEC 61558-1/19977 F4 w$ H9 S8 c8 T& {
A1/1998* j; X0 i7 J: _$ Z
IEC 60529/1989 3 c5 _0 u6 r! G' X( CA1/1999, N) c7 {% r% b+ e# S
Sub clause: 17.1.1C , Y3 \1 n% z8 m5 i- K* P: K13.4 8 j! v1 z3 F0 `9 GSheet N°: 592/061 H# w% Z5 V2 }) n2 T/ N7 F; J
Page: 1(1) & U1 A8 E3 K2 u2 ^/ vSubject: Dust test for IP 5X and 1 |- k! {: i, b$ r- o6X as described in the 6 _+ k* E9 y: J- f6 l; S$ `. [4 atransformer standard' s8 M- ^, [; U
Key words: ' M" p( N9 L+ l; X' j1 O b- Transformers / {8 w- c ]+ j R" C) U( _- Dust test * V: ^8 c& f, \2 M$ {8 {# @- IEC 60529" c! u; l% J$ ? B# N
Meeting: * }& O$ \0 Q. H, o& H- b7 ]Decision confirmed$ d+ f4 N$ G% r2 _" m3 @& e
at CTL 42nd meeting . \ o3 a7 g% K3 a8 k! [Question: In the horizontal safety function standard for degree of protection provided by ' P: W/ t: b1 y, Oenclosures (IP code), IEC 60529, a description of the dust is given in subclause + J) O8 T1 g. N6 V; Y6 q8 t# z13.4. However, in the transformer standard the description of the dust divagate a6 z$ a; h/ t/ v3 A& ?
bit as the following wording is added: “and shall have a range of particle size ]5 d9 F$ I7 K, N
down to and including 1 +m with at least 50% by weight less than 5 +m”. This ) u* z- l& n, @" W! i* rmore precise description imply that dust in the dust chamber must be changed $ U4 E0 G" r6 Y1 s; e) q1 ]% l! jwhen a transformer is tested, this without any technical reasons. For the future, 9 Q. j: g' b4 g+ j. ~ Ican we use the dust specified in IEC 60529 also for transformers? t7 F0 c* @' V* x6 D6 K: `Decision: The horizontal safety function standard IEC 60529 shall be followed, i.e. the dust8 M8 G# r3 K% v7 ~( L; v
specified in subclause 13.4 can be used.. G1 |' K- p& O) a
DSH 592/06