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|  DSH 443
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| Impulse voltage test T2.3! \3 D" W6 Q' Z& g8 `
| Note 1 of table 5( X6 ?- w3 q; W0 K3 c2 H
| 61543(ed.1)) o2 a% X3 I5 r( V
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Question:' { E; w1 V" {; S& ^ ^, t) \
In 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.
: X# R% t( n C3 m9 R, [Decision:
) _+ Q% v/ N; J6 M+ z8 n1 [5 N- kThe mentioned note 1 shall be interpreted by replacing the first line by:
& \0 e1 X, V' A. b2 G+ \" T5 s6 U“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:1 L& @- S* I( Y s+ i( }* f
- between the metal support....”! j+ R) r( ?$ l) u
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发表于 2012-9-4 16:42
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