标题: DSH 437 Verification of the rated residual making and breaking capacity ID m [打印本页] 作者: 小米 时间: 2012-11-7 19:31 标题: DSH 437 Verification of the rated residual making and breaking capacity ID m
Verification of the rated residual making and breaking capacity ID m % ^+ z, r2 B4 Z+ t: S
9.12.136 O+ Y9 X9 S( b
61009-1(ed.2) 0 U. u! i }: G$ o: s+ i
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Standard: & @9 c+ @" ~; f* l( M [IEC 61009-1 (1996-12) # R2 |" o# Q7 U+ zSub clause: % c7 ]& h- \9 }0 l9.12.134 n g, d K0 \4 p& ^. g
Sheet No. 437: V8 V& M1 h5 f* e6 H. p; Z
Subject / k5 v/ E U) Y8 C" jVerification of the rated residual2 y9 h% \4 B5 `
making and breaking capacity IDm* I" ]7 @; E, h' f$ B. }+ ]$ b
Key words: Confirmed at CTL 7 v1 \/ O6 A9 B' U; z- Q39th Meeting3 A! ]1 O6 W3 q$ J* h2 E K
Question:: C8 g2 u) D( P8 Q& b# `4 u
9.12.13.1 refers to the test conditions prescribed in 9.12.1 and states that the impedance Z1 shall ! W5 B7 a" I$ ?1 mnot be used.5 v4 ]( y$ R" V& D2 d+ K
9.12.1 refers to the conditions in 9.12.1 to 9.12.12.8 c: ?- j1 E6 J4 b% ^& @4 d/ l
9.12.2 and 9.12.7.4 require the test circuits according to figures 5 to 9 together with impedance 2 v7 K* A/ }( z9 E: MZ2 to be used. " e1 t& H- Y" F! ]7 `% }. k; Z( O# cAccording to these figures the following inconsistency appears:2 E" V4 l1 F9 ]+ V
For a single pole switch (with two current paths) normally rated for 230 V, the rated residual 5 B# o0 Z9 }+ nmaking and breaking capacity has to be tested at 230 V.0 T, a+ E% [( X7 W6 S# M* p; R2 s
For a two pole switch normally rated for 400 V, the rated residual making and breaking% Y# l* Y( U+ f
capacity has to be tested at 400 V. % X3 O- ~( r2 Y- I, L. YFor a three pole switch normally rated for 400 V, the rated residual making and breaking / E7 h' V! y3 f$ h# C( V Ncapacity has to be tested at 400 V.* G" z* y5 E! A& W
For a three pole switch with four current paths and for a four pole switch normally rated for6 q y3 I3 P) `+ `* I$ Q6 T' R
400 V, the rated residual making and breaking capacity has to be tested at 230 V. 4 R, L# P( c: n0 PDue to the fact that the purpose of this test is not to cover the special fault conditions in IT-systems,& e) G# b# S+ b, I
the test voltage for this verification of the rated residual making and breaking capacity should be! l) x) @$ y. B) Z5 l6 Z! D. F
230 V, independent of the number of poles, and the relevant figures should be corrected./ }5 q9 `8 M) }5 ?
Decision taken at the SC23E WG2 meeting in Nice, October 2001: 4 ]2 C: R _) b3 E/ @/ `# JExtract from the minutes IEC SC23E_WG2_006:" X8 w0 A6 i# ^
SC23E_WG2_010 request from Austria to update 61008 clause 9.11.2.35 J9 g4 O" S0 L& r% {3 r9 D
The proposal made by Mr Bachl was considered justified and accepted. During the meeting% h) G. s3 F6 v% ^- f
WG2 decided that laboratories and certification bodies should be informed about this / W( _4 y$ N$ z; M% Nimportant decision.2 @$ E x3 G# T7 m- U" Q4 _
Therefore the following statement was drafted:+ i g1 Z4 D. ^1 l: [+ [1 |7 W$ [
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Decision to be forwarded to CTL:& g7 `- w# u: r( t% v
IEC SC23E WG2 decided to correct the inconsistent test requirement in IEC 61008-1 (1996-12), subclause ) K9 f# {0 p# W% H4 b- W9.11.2.3 and in IEC 61009-1 (1996-12), subclause 9.12.13 - Verification of the rated residual ; e' [- R U1 E9 w$ Z e6 A- }making and breaking capacity IDm. : K% C3 ] b; j* B* s {The test voltage for this verification of the rated residual making and breaking capacity should be the, R2 |8 {# p' \) `- H) L1 |9 \
line to neutral voltage, independent of the number of poles of the RCCB or RCBO. This correction will. _- I a& c: `# I
be included in the next amendment or revision of IEC 61008-1 and IEC 61009-1. ; B/ L, p4 N& A+ ^% pThe revised test circuit (fig. 7) proposed for the standard is attached.4 L2 O1 z& i8 k/ G: N0 j
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[attach]77218[/attach] . P/ c+ l/ b: M5 q4 m
DSH 437