DSH 592/06 Dust test for IP 5X and 6X as described in the transformer standard

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灯具防风罩

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IEC60335试验指甲

DSH 592/06 " D# Q/ m  L& ]. P. @ 4 f( v1 L  ]' k  {6 r- m5 n. J$ k

Dust test for IP 5X and 6X as described in the transformer standard . i2 Z$ F- Q- V9 ~! m% h

17.1.1C, 13.4 % Z! @! Y4 A( o; l7 V, P" _2 Z

61558-1(ed.1);am1 & 60529(ed.2);am1

Standard: IEC 61558-1/1997
' P2 W- n6 P5 t$ C. m, H! nA1/1998
3 O2 E+ U1 b9 {7 B3 HIEC 60529/1989
A1/1999
Sub clause: 17.1.1C
, F/ l9 c" A& W6 \. C13.4
: E9 Z; Y6 P& T! t4 g& ?: n, FSheet N°: 592/06
* W3 X+ o. F: N5 wPage: 1(1)
( D# o9 f/ r# }8 MSubject: Dust test for IP 5X and
  h! |2 J2 _" m* h+ _6X as described in the
transformer standard
4 S  B; U* r, S$ M2 E; M6 GKey words:
" v; h* W: q3 @3 _0 ^) l: V- Transformers
- Dust test
, m7 X' V# q% w* ~) J0 ^- IEC 60529
+ e3 ]  l# n5 K0 e# c* s0 uMeeting:
1 T- z: ^4 c# B6 u. I6 q# EDecision confirmed
& s6 F: I9 e! A' O0 [9 _9 aat CTL 42nd meeting
Question: In the horizontal safety function standard for degree of protection provided by
( s  m! G, }+ menclosures (IP code), IEC 60529, a description of the dust is given in subclause
: X) o2 }2 ~* `3 U13.4. However, in the transformer standard the description of the dust divagate a
bit as the following wording is added: “and shall have a range of particle size
# o+ w! @# ~8 v# i7 n5 k- Odown to and including 1 +m with at least 50% by weight less than 5 +m”. This
more precise description imply that dust in the dust chamber must be changed
when a transformer is tested, this without any technical reasons. For the future,
$ K) i& q$ d4 Q! q6 qcan we use the dust specified in IEC 60529 also for transformers?
Decision: The horizontal safety function standard IEC 60529 shall be followed, i.e. the dust
$ W. n9 m/ l7 S0 _* j3 }/ Kspecified in subclause 13.4 can be used.

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