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| DSH 437
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' d7 D) a. j0 P# F3 |) y* O; r | Verification of the rated residual making and breaking capacity ID m
' g$ a9 k8 B( r4 C1 ]4 N8 e | 9.12.13
6 q5 ^, j# }3 P! A1 X; j& P- o" M& Q" ? | 61009-1(ed.2)
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Standard:7 X" {4 ?' p5 N; |8 u" Z
IEC 61009-1 (1996-12)
j! ]% |; z7 ~" E" NSub clause:
/ J8 B* W3 Q/ Z8 W" Q9.12.13
9 {! S9 \$ X$ S9 H) S( z: k2 T. OSheet No. 437& K' t8 z5 h4 z
Subject
5 a7 u2 {4 Q: K& P$ rVerification of the rated residual% b. F! M2 P6 m. \3 H, p, o
making and breaking capacity IDm
. _1 Q! y% {6 p, zKey words: Confirmed at CTL4 \# E6 S! l' ~) w* k/ J
39th Meeting' i: \/ P/ w" h3 C; [: u' C/ q
Question:
% \& R Q5 b0 M! M% f4 J v9.12.13.1 refers to the test conditions prescribed in 9.12.1 and states that the impedance Z1 shall
/ t" w9 z1 ]% Lnot be used.3 z/ v! G, d+ {0 D( c
9.12.1 refers to the conditions in 9.12.1 to 9.12.12.
7 s) F7 G" L G: y9.12.2 and 9.12.7.4 require the test circuits according to figures 5 to 9 together with impedance; I: K0 ]/ t$ m; d$ {
Z2 to be used.# {( k1 N- {% g8 t& U
According to these figures the following inconsistency appears:9 ^2 V$ [1 a+ q
For a single pole switch (with two current paths) normally rated for 230 V, the rated residual8 @$ f( |- Z4 Y' m' i! {
making and breaking capacity has to be tested at 230 V.- o Q9 D0 h& z
For a two pole switch normally rated for 400 V, the rated residual making and breaking, e& b" }( g% }9 p. z
capacity has to be tested at 400 V.
5 S8 m% E: Y0 J& XFor a three pole switch normally rated for 400 V, the rated residual making and breaking. p$ c' s+ W) J8 g5 J' i$ \: s
capacity has to be tested at 400 V.+ l- I a& a. {. j) ]
For a three pole switch with four current paths and for a four pole switch normally rated for
# [) I: s/ c9 l2 s' g, x9 a4 w, b400 V, the rated residual making and breaking capacity has to be tested at 230 V.9 w; m$ x/ t& ?) i
Due to the fact that the purpose of this test is not to cover the special fault conditions in IT-systems,' q2 ]0 U+ _! {; F+ \1 v
the test voltage for this verification of the rated residual making and breaking capacity should be
/ n7 _) a6 O! ]- ~) \; C230 V, independent of the number of poles, and the relevant figures should be corrected.8 h% l* J# }* \- p" \& ]* Y
Decision taken at the SC23E WG2 meeting in Nice, October 2001:) x1 L. m+ L( x
Extract from the minutes IEC SC23E_WG2_006:' d3 B$ V0 _8 Z' Q! \- ?2 h
SC23E_WG2_010 request from Austria to update 61008 clause 9.11.2.3
+ e% o! z: J6 A( pThe proposal made by Mr Bachl was considered justified and accepted. During the meeting
# c8 h1 P" d6 l, cWG2 decided that laboratories and certification bodies should be informed about this
0 C/ n( s) `7 a' [, `7 u" ?important decision.
* V' q5 K3 s7 [Therefore the following statement was drafted:
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0 |+ ]2 R5 K5 b6 ?' ?Decision to be forwarded to CTL:
+ B+ P" _5 o5 K- E/ Y7 D9 l" x1 mIEC SC23E WG2 decided to correct the inconsistent test requirement in IEC 61008-1 (1996-12), subclause
D- k* S& q* N1 b- S4 Y5 Z3 X9.11.2.3 and in IEC 61009-1 (1996-12), subclause 9.12.13 - Verification of the rated residual! L8 K1 @9 d0 V7 \& O$ S u% f
making and breaking capacity IDm.8 I$ D2 j2 A, P4 F9 H0 i
The test voltage for this verification of the rated residual making and breaking capacity should be the8 O4 f# m8 s4 L5 M6 c& }; D
line to neutral voltage, independent of the number of poles of the RCCB or RCBO. This correction will% N# D: P$ {/ ^0 i \' I( a9 C4 H: _+ H
be included in the next amendment or revision of IEC 61008-1 and IEC 61009-1./ e% k n7 X* @8 E
The revised test circuit (fig. 7) proposed for the standard is attached.
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