Title :
Comparative evaluations of coil insulation systems in hydrogenerator uprates and refurbishment
Author :
Harder, William R.
Author_Institution :
Nat. Electr. Coil, Columbus, OH, USA
Abstract :
In considering strictly coil design for an hydrogenerator uprating, it is not just a matter of choosing which type of insulation system to use and manufacture coils that fit the specified slot dimensions. Tradeoffs also must be made between the physical characteristics of various insulating materials-thickness, durability and strength-and their dielectric properties, and of course, their cost. Although other factors, affecting various machine components also limit the generator´s uprate potential, this paper focuses solely on providing information on coil insulation systems
Keywords :
coils; hydroelectric generators; machine insulation; maintenance engineering; stators; coil design; coil insulation systems comparison; dielectric properties; durability; hydrogenerator refurbishment; hydrogenerator uprating; insulating materials; physical characteristics; strength; thickness; Cable insulation; Coils; Conductors; Copper; Costs; Dielectric materials; Dielectrics and electrical insulation; Power transformer insulation; Stators; Wire;
Conference_Titel :
Electric Machines and Drives, 1999. International Conference IEMD '99
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-5293-9
DOI :
10.1109/IEMDC.1999.769252
