NEMA review of ASTM procedure for testing `resistance to insulating liquids and hydrolytic stability of film coated magnet wire´

Author

Bullock, James W.

Author_Institution

Essex Group Inc., Fort Wayne, IN, USA

fYear

1989

fDate

25-28 Sep 1989

Firstpage

62

Lastpage

63

Abstract

ASTM 1676-88 includes a test procedure for determining the resistance to insulating liquids and hydrolytic stability of film coated magnet wire. During the fall of 1987 NEMA proposed a round-robin test program to try out this procedure. Four samples of magnet wire-heavy Formvar, single Formvar, heavy polyester/polyamide-imide, and heavy esterimide-were tested along with transformer paper, steel, and oil. ASTM 1676-88 section 29, `Resistance to Insulating Liquids´, was shown to have potential for providing useful information. It is noted that additional work is needed to clarify and improve the procedure

Keywords

cable testing; environmental testing; insulated wires; materials testing; ASTM 1676-88; ASTM procedure; NEMA; film coated magnet wire; heavy Formvar; heavy esterimide; heavy polyester/polyamide-imide; hydrolytic stability; oil; resistance to insulating liquids; review; round-robin test program; single Formvar; steel; test procedure; transformer paper; wire testing; Cable insulation; Dielectric liquids; Glass; Materials testing; Oil insulation; Petroleum; Power transformer insulation; Stability; Steel; Wire;

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.1989.208193

Filename

208193