DocumentCode
1431775
Title
Thermal endurance of Class H insulation
Author
Grant, George ; Kauppi, T. A. ; Moses, G. L. ; Gibson, G. P.
Author_Institution
Dow Corning Corporation; Westinghouse Electric Corporation, East Pittsburgh, Pa.; Westinghouse Electric Corporation, Buffalo, N. Y.
Volume
69
Issue
6
fYear
1950
fDate
6/1/1950 12:00:00 AM
Firstpage
505
Lastpage
505
Abstract
A COMPREHENSIVE MOTOR test program was undertaken to determine the thermal endurance of Class H insulated motors at several different temperatures. A scattering of thermal life and points was obtained over a sufficiently wide temperature range to permit extrapolation of life expectancy to lower temperatures. A comparison was obtained between the behavior of Class B insulation and Class H insulation under the same test conditions. The fundamental concept followed in this test program is that appreciable decrease in the humidified insulation resistance of windings is a criterion of minimum motor insulation life.
Keywords
Aging; Humidity; Induction motors; Insulation; Resistance; Traction motors; Windings;
fLanguage
English
Journal_Title
Electrical Engineering
Publisher
ieee
ISSN
0095-9197
Type
jour
DOI
10.1109/EE.1950.6433904
Filename
6433904
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