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

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DSH 436 ( {4 c( }$ X2 D7 {- n- E   b7 L% M0 u1 z5 H* H; _4 F) N5 y' k

Verification of the rated residual making and breaking capacity IDm % ?8 A) s. V. G; }4 f! |2 r4 O. i

9.11.2.3 # M0 n/ E+ A: H) M9 ]

61008-1(ed.2)

$ d1 \7 ~% y5 _Standard:
! M! k( k& v1 G9 W( IIEC 61008-1 (1996-12)
0 V2 N- ]/ d1 D) r8 c* dSub clause:
9.11.2.3
/ E/ o: I" a  K# [. S$ QSheet No. 436
Subject:
- z8 G8 }$ w+ J) b) Y2 d% rVerification of the rated residual
- c  t: d" W, D! ^( l$ _making and breaking capacity IDm
1 a9 g( ?/ D6 G1 bKey words: Confirmed at 39th
# M" a! U, h  W6 a4 N! L2 A  ACTL Meeting
Question:
9.11.2.3 refers to the test conditions prescribed in 9.11.2.1 and states that the resistor R3 shall
not be used.
9.11.2.1 require the test circuits according to figures 5 to 9 together with resistor R2 to be used.
According to these figures, the following inconsistency appears:
For a single pole switch (with two current paths) normally rated for 230 V, the rated residual
* w' X2 b% S' m/ u- J$ Umaking 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
; F% E6 d1 U2 w# N  }8 P! Acapacity has to be tested at 400 V.
For a three pole switch normally rated for 400 V, the rated residual making and breaking
* ]% j5 b9 W0 L4 n6 f, q6 fcapacity has to be tested at 400 V.
For a three pole switch with four current paths and for a four pole switch normally rated for
- N6 R' h1 i6 A$ j0 ~1 ]5 O/ x400 V, the rated residual making and breaking capacity has to be tested at 230 V.
8 {8 P: s" P5 f/ y. pDue to the fact that the purpose of this test is not to cover the special fault conditions in IT-systems,
the test voltage for this verification of the rated residual making and breaking capacity should be
- y5 P9 R  T* V# O. j( |1 \. a6 _2 o" F230 V, independent of the number of poles, and the relevant figures should be corrected.
Decision taken at the SC23E WG2 meeting in Nice, October 2001:
. S4 u. C; N( s. n7 d3 cExtract from the minutes IEC SC23E_WG2_006:
  _! f( a9 O3 _# D0 y' F( P/ }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
5 S2 W1 K4 E5 z, iWG2 decided that laboratories and certification bodies should be informed about this
) ]# u# ?6 H8 bimportant decision.
9 o& s% N- C' p3 [3 L$ nTherefore the following statement was drafted:
* W# J4 q7 p% ]8 ~2
3 x& \3 k0 j$ L! m# [: D4 ~) nDecision to be forwarded to CTL:
IEC SC23E WG2 decided to correct the inconsistent test requirement in IEC 61008-1 (1996-12), subclause
! ^. R6 s' j1 _5 ?0 U) S9.11.2.3 and in IEC 61009-1 (1996-12), subclause 9.12.13 - Verification of the rated residual
2 K5 n9 e4 }  h  N+ k  lmaking and breaking capacity IDm.
The test voltage for this verification of the rated residual making and breaking capacity should be the
% V7 a' U/ u0 F7 Rline to neutral voltage, independent of the number of poles of the RCCB or RCBO. This correction will
be included in the next amendment or revision of IEC 61008-1 and IEC 61009-1.
# k3 l5 w( U5 U! |The revised test circuit (fig. 7) proposed for the standard is attached.
& r0 ~& ~- O& u3 c$ x' e8 d
+ F8 i; _. h+ _" r9 b( |