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|  DSH 436
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) b/ K; w: y8 f* M: f& r5 X% B& m | Verification of the rated residual making and breaking capacity IDm/ F, K s n* o8 e- y& K K3 \5 L
| 9.11.2.3
8 ]7 I: E! [/ e" Y | 61008-1(ed.2)
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. b8 B& k0 k9 }0 M1 c( ` DStandard:
# z% i+ R/ r& N& @3 d) b% mIEC 61008-1 (1996-12)
6 x& S0 {2 r3 a+ eSub clause:
( O$ @$ f# N8 F- t; m# @/ t% }9.11.2.3. V( p2 f' z' ?0 ~9 S: m& G) n
Sheet No. 436
9 K! C, x: @% b9 }( a+ fSubject:
4 D: D! [/ a. u% Z$ Z) `: O2 dVerification of the rated residual
3 g0 b% \$ }/ |' |making and breaking capacity IDm" A* z# u8 U4 E
Key words: Confirmed at 39th
+ D$ I( [5 X O! l# J0 U2 bCTL Meeting c+ w; a& ]7 v: ^6 n
Question:" h$ f5 _* L6 }: [: G' U+ E. Z
9.11.2.3 refers to the test conditions prescribed in 9.11.2.1 and states that the resistor R3 shall! ^' V9 G& ]) W, ^. \+ x$ h: s
not be used.
! A% k* c8 E+ { v, U9.11.2.1 require the test circuits according to figures 5 to 9 together with resistor R2 to be used.
- w/ }3 ~* N* q4 R* r dAccording to these figures, the following inconsistency appears:
; S/ v# a4 e6 D) X7 E; }) yFor a single pole switch (with two current paths) normally rated for 230 V, the rated residual- @% b7 Z* k$ m; p0 c: X' L$ p
making and breaking capacity has to be tested at 230 V.
# }( H% H9 E! Z( T( Y0 w) D( r4 i! g! bFor a two pole switch normally rated for 400 V, the rated residual making and breaking# M% M( C2 h* j& X& V
capacity has to be tested at 400 V.
3 d2 V4 X# C/ D. p% P, W$ KFor a three pole switch normally rated for 400 V, the rated residual making and breaking2 k# `/ S _; ^3 i
capacity has to be tested at 400 V.( C' M6 g: J7 Z
For a three pole switch with four current paths and for a four pole switch normally rated for- {. Z4 R& g# _7 K( d1 E9 H
400 V, the rated residual making and breaking capacity has to be tested at 230 V.: ?3 K# G& |. |* \; v
Due to the fact that the purpose of this test is not to cover the special fault conditions in IT-systems,
4 N& ?% Y% Z3 j( vthe test voltage for this verification of the rated residual making and breaking capacity should be
; f1 ^3 l( F/ i" p$ _* M) Z( D230 V, independent of the number of poles, and the relevant figures should be corrected.& d, r3 v7 U& v" x- r+ [6 b/ q$ |
Decision taken at the SC23E WG2 meeting in Nice, October 2001:
* i" I) e @" Q. |- r" B" y2 `Extract from the minutes IEC SC23E_WG2_006:
) x+ Q6 q+ c( c5 q' hSC23E_WG2_010 request from Austria to update 61008 clause 9.11.2.37 q0 J4 K4 d8 p. Z; m
The proposal made by Mr Bachl was considered justified and accepted. During the meeting5 V. p5 f+ Q7 W4 I% U
WG2 decided that laboratories and certification bodies should be informed about this) x/ I8 w2 S4 n0 v% _% a' I
important decision.
! Z: j4 \* Z0 I/ j' ~! ?* E/ lTherefore the following statement was drafted:! i+ D) \1 S% S* E/ s
2
) W. t7 K8 n* Q% _$ r. JDecision to be forwarded to CTL:
1 g$ T: K+ ?5 G9 e, v3 v* kIEC SC23E WG2 decided to correct the inconsistent test requirement in IEC 61008-1 (1996-12), subclause7 M g/ w/ I* M1 P. }/ I
9.11.2.3 and in IEC 61009-1 (1996-12), subclause 9.12.13 - Verification of the rated residual
* I! p7 Q1 ?1 R0 u) C; g; l3 y5 M# Ymaking and breaking capacity IDm.
' l0 V& F* Y% [4 q' v ]The test voltage for this verification of the rated residual making and breaking capacity should be the
5 [" e# l( B( B" K$ Qline to neutral voltage, independent of the number of poles of the RCCB or RCBO. This correction will
4 |1 G) M x- U& |: O; rbe included in the next amendment or revision of IEC 61008-1 and IEC 61009-1.
: m1 [8 k4 T) A9 j# X% U4 N. `The revised test circuit (fig. 7) proposed for the standard is attached." {/ k3 N- D" d; C9 {# Y/ P
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