DSH 436 Verification of the rated residual making and breaking capacity IDm

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DSH 436 6 ^$ h- ^9 G$ E8 S. w2 `( x * f4 M7 D+ ]3 |3 @( u

Verification of the rated residual making and breaking capacity IDm

9.11.2.3 . H( t' D& Z/ \* V- o' h

61008-1(ed.2) ! u7 S5 y& n5 a# a- T

5 K% p  P3 Q1 V1 }$ y+ L/ VStandard:
IEC 61008-1 (1996-12)
Sub clause:
$ k2 U. K: B5 G" l: |6 M9.11.2.3
Sheet No. 436
Subject:
Verification of the rated residual
making and breaking capacity IDm
8 c; M. [: T5 H& c/ pKey words: Confirmed at 39th
CTL Meeting
Question:
0 q6 P1 {# k/ a- w. P9.11.2.3 refers to the test conditions prescribed in 9.11.2.1 and states that the resistor R3 shall
0 ~4 d9 p7 m, K' ynot be used.
9.11.2.1 require the test circuits according to figures 5 to 9 together with resistor R2 to be used.
( X* O8 L( G: r/ pAccording to these figures, the following inconsistency appears:
9 b( f- l+ `9 ]$ A& dFor a single pole switch (with two current paths) normally rated for 230 V, the rated residual
0 r# f5 ]! n: }0 |3 Jmaking and breaking capacity has to be tested at 230 V.
For a two pole switch normally rated for 400 V, the rated residual making and breaking
: s2 Z6 e3 K, }- o2 p0 S0 n9 Ncapacity has to be tested at 400 V.
For a three pole switch normally rated for 400 V, the rated residual making and breaking
! i/ Y, S( P* b2 Q% v) Bcapacity has to be tested at 400 V.
5 D- R& J1 m7 s4 u1 ]For a three pole switch with four current paths and for a four pole switch normally rated for
, G& @1 R  l* q$ T# ^400 V, the rated residual making and breaking capacity has to be tested at 230 V.
Due to the fact that the purpose of this test is not to cover the special fault conditions in IT-systems,
" \3 m; r3 |! b* {$ B" G9 g% L) Sthe test voltage for this verification of the rated residual making and breaking capacity should be
2 v* a) R$ n: ]/ c230 V, independent of the number of poles, and the relevant figures should be corrected.
, s1 I9 b  p4 N4 h" ?; d0 C! L% R  hDecision taken at the SC23E WG2 meeting in Nice, October 2001:
2 j  V( u$ B2 C. F- U7 u& QExtract from the minutes IEC SC23E_WG2_006:
SC23E_WG2_010 request from Austria to update 61008 clause 9.11.2.3
The proposal made by Mr Bachl was considered justified and accepted. During the meeting
% c6 b: K% M" h, aWG2 decided that laboratories and certification bodies should be informed about this
important decision.
$ E1 N" @4 [! p7 z, x# w1 WTherefore the following statement was drafted:
2
' q! j9 \, e' y" c1 mDecision to be forwarded to CTL:
IEC SC23E WG2 decided to correct the inconsistent test requirement in IEC 61008-1 (1996-12), subclause
  d; {7 b& Q+ Q6 _% B9.11.2.3 and in IEC 61009-1 (1996-12), subclause 9.12.13 - Verification of the rated residual
3 k0 B1 D3 T. w. i2 \3 ?( Cmaking and breaking capacity IDm.
The test voltage for this verification of the rated residual making and breaking capacity should be the
# J2 ~  B* N8 _! U( c" Eline to neutral voltage, independent of the number of poles of the RCCB or RCBO. This correction will
; Z- P7 u/ B% M6 v- Z7 abe included in the next amendment or revision of IEC 61008-1 and IEC 61009-1.
: H% ?( e. ^' b% \- t: R/ eThe revised test circuit (fig. 7) proposed for the standard is attached.
* F1 [# E7 E. R  S, k2 Z; u2 H
! M4 [, S( D) B. p$ U% M