Title :
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
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;
Conference_Titel :
Electrical Electronics Insulation Conference, 1989. Chicago '89 EEIC/ICWA Exposition., Proceedings of the 19th
Conference_Location :
Chicago, IL
DOI :
10.1109/EEIC.1989.208193
