Investigation of white powder found on pump motor stator winding

Author

Rux, L.M. ; Hurcomb, D.F.

Author_Institution

Tech. Service Centre, Bur. of Reclamation, Denver, CO, USA

fYear

1995

fDate

18-21 Sep 1995

Firstpage

681

Lastpage

684

Abstract

During a routine physical inspection of pump motor unit P7 at the Little Harquahala pumped storage power plant in Central Arizona, USA, a very fine, white powder was found on the surface of the stator winding. A series of inspections, tests, and analyses was performed to determine whether the particles were caused by electrical, chemical, or mechanical breakdown of the stator winding insulation system, or the result of contamination by a foreign material. The course and outcome of the stator winding investigation are presented

Keywords

electric breakdown; electric motors; inspection; insulation testing; machine insulation; machine testing; pumped-storage power stations; pumps; stators; USA; chemical breakdown; contamination; electrical breakdown; inspection; insulation tests; mechanical breakdown; pump motor stator winding; pumped storage power plant; white powder; Chemical analysis; Inspection; Insulation testing; Materials testing; Performance analysis; Powders; Power generation; Stator windings; Surface contamination; System testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Electronics Insulation Conference, 1995, and Electrical Manufacturing & Coil Winding Conference. Proceedings

Conference_Location

Rosemont, IL

Print_ISBN

0-941783-15-4

Type

conf

DOI

10.1109/EEIC.1995.482516

Filename

482516