DSH 443 Impulse voltage test T2.3

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DSH 443 , F" W2 J1 d9 i( c5 c

Impulse voltage test T2.3

Note 1 of table 5 : `9 D& t- M( X  c) c: C1 `

61543(ed.1) 0 c  v6 \/ G, ^  C% k  b

3 [  D: M& I+ K& U1 ], YQuestion:
' }. ^9 V8 h. }* T: k# zIn the application of IEC 61543 it was noted by various testing laboratories that note 1 of table 5 (referring to the impulse voltage test T2.3 for immunity to conducted unidirectional transients of the micro-/millisecond time scale) does not give information about the number and the polarity of the impulses to be given.
9 U& d6 y; X# I, K+ {$ rDecision:
The mentioned note 1 shall be interpreted by replacing the first line by:
4 ~( X- E6 S4 ]3 W$ r“This test shall be carried out with the RCD, in the closed position. A total of five positive and five negative pulses (for each phase angle) shall be applied synchronised to the voltage phase at the zero-crossing (0°) and the peak value of the a.c. voltage wave (90° and 270°), for each of the following tests:
- between the metal support....”

+ ^) T. j/ _2 |8 v