Fundamentals-a useful index for estimating residual life of motor insulation

Author

Kimura, K. ; Iwabuchi, T. ; Morooka, K. ; Ishikawa, Y.

Author_Institution

Mitsubishi Electr. Corp., Tokyo, Japan

Volume

6

Issue

2

fYear

1990

Firstpage

29

Lastpage

32

Abstract

During the period from 1955 to 1978, the insulation system of choice for motor windings in Japan was predominantly of the polyester type. Since there are still a number of polyester-insulated motors in the field, there is a demand for a reliable means of evaluating the residual life of these units, the ultimate goal being standardization acceptable to the industry. The present state of this effort in Japan is briefly reviewed. A simple but effective procedure for the diagnostic evaluation of motor life is offered. It is based on tests easily performed on the insulation and within the scope of the average motor repair shop facilities.<>

Keywords

electric motors; insulation testing; life testing; machine insulation; organic insulating materials; polymers; Japan; motor insulation; motor life; motor repair shop facilities; motor windings; polyester; residual life; standardization; Aging; Coils; Dielectrics and electrical insulation; Failure analysis; Induction motors; Insulation testing; Life estimation; Mechanical factors; Power cables; Standardization;

fLanguage

English

Journal_Title

Electrical Insulation Magazine, IEEE

Publisher

ieee

ISSN

0883-7554

Type

jour

DOI

10.1109/57.50803

Filename

50803