A study of corona discharge and surface tracking in the intermediate voltage range 2 to 3 kVAC

Author

Krause, Marcella J.

Author_Institution

ELTEK Int. Corp., St. Charles, MO, USA

fYear

1989

fDate

25-28 Sep 1989

Firstpage

88

Lastpage

92

Abstract

Laboratory testing of motorette specimens showed that specimens failed in a matter of minutes when subjected to test voltages of 2300 VAC to 2500 VAC. A study was designed and implemented to determine the mode of failure and identify the cause. The author presents the steps taken, the information learned at each step, and the results of this evaluation. It was shown that the cause of failure was a combination of a corona-type discharge and the related surface tracking. A direct relationship was also found between specimen failure and moisture, physical design of the specimen, environment, and applied voltage

Keywords

corona; failure analysis; insulation testing; machine insulation; surface discharges; 2300 to 2500 V; applied voltage; corona discharge; corona-type discharge; environment; intermediate voltage range; laboratory testing; mode of failure; moisture; motor test models; motorette specimens; physical design; surface tracking; test voltages; Cable insulation; Corona; Dielectrics and electrical insulation; Insulation life; Laboratories; Moisture; Power transformer insulation; Surface discharges; Testing; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Electronics Insulation Conference, 1989. Chicago '89 EEIC/ICWA Exposition., Proceedings of the 19th

Conference_Location

Chicago, IL

Type

conf

DOI

10.1109/EEIC.1989.208199

Filename

208199