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|  DSH 443
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[$ X9 H5 G1 ^% H* X | Impulse voltage test T2.3
# O; O8 R- U C( z, e, H+ D | Note 1 of table 5
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Question:8 ?" k: `3 a }
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., \' m* d. H3 X) u
Decision:% M0 V# k& ^$ R! v
The mentioned note 1 shall be interpreted by replacing the first line by:# K' U7 f; w* L" ^. t+ d% V
“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:9 F/ K3 m: l; ]3 O7 |+ D
- between the metal support....”/ z$ P) n4 g# _* P
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发表于 2012-9-4 16:42
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