EFFECT OF SHEATHING ON THE TESTING OF MACHINE COILS USING TRANSIENT SUBMICROSECOND IMPULSE VOLTAGE.

R. S. Dhariwal, S. J. Yang, C. F. Hoon

Research output: Contribution to journalArticle

Abstract

Test results are compared for impulse-breakdown level of the turn insulation in electrical machine coils, with and without grounded metallic sheath, using a voltage surge with a risetime of the order of 0. 2 mu s. It is found that the breakdown of the machine coil in the sheathed condition is indicated by a large drop in the first peak voltage, along with a complete change in the voltage waveform.

Original languageEnglish
Pages (from-to)663-667
Number of pages5
JournalIEEE Transactions on Electrical Insulation
VolumeEI-21
Issue number4
Publication statusPublished - Aug 1986

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