The performance of PET motor insulation in CFC-free refrigerant systems

Author

Korleski, Joseph E.

Author_Institution

EI du Pont de Nemours & Co Inc., Wilmington, DE, USA

fYear

1991

fDate

7-10 Oct 1991

Firstpage

190

Abstract

Summary form only given, as follows. The rapid conversion to CFC (chlorofluorocarbon)-free refrigerants has prompted the reexamination of the performance of PET insulating materials in the presence of the new refrigerant systems. Several PET motor films were subjected to sealed-tube aging tests in the presence of CFC-free refrigerants and lubricants. The effects of the type of lubricant, level of moisture, temperature, and time on the physical properties of the motor films were examined. The factors which dominate the motor films´ performance were considered. The performance of the films in sealed-tube tests was compared to their performance in other aging tests, such as hydrolytic stability, 160°C aging, and oligomer extraction to obtain the later test´s relative predictive value

Keywords

ageing; machine insulation; organic insulating materials; refrigeration; small electric machines; CFC-free refrigerant systems; PET motor insulation; hydrolytic stability; lubricants; moisture; oligomer extraction; sealed-tube aging tests; temperature; time; Aging; Insulation; Lubricants; Moisture; Positron emission tomography; Refrigerants; Stability; Temperature; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Electronics Insulation Conference, 1991. Boston '91 EEIC/ICWA Exposition., Proceedings of the 20th

Conference_Location

Boston, MA

Print_ISBN

0-7803-0018-1

Type

conf

DOI

10.1109/EEIC.1991.162600

Filename

162600