Oil-filled submergible electric pump motor with unvarnished...

H - Electricity – 02 – K

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H02K 5/132 (2006.01) H02K 3/32 (2006.01) H02K 3/38 (2006.01) H02K 3/44 (2006.01) H02K 3/50 (2006.01) H02K 9/19 (2006.01)

Patent

CA 1312109

Abstract of the Disclosure An oil-filled, high temperature, submergible electric pump motor comprises an unvarnished stator structure having stator windings formed of conductors coated with hydrolytically stable, oil-resistant, and abrasion-resistant insulation exposed to the oil of the motor, and preferably selected from the group consist- ing of PEEK, PEK, and PBI. The stator windings have end turns mounted on rigid, hydrolytically stable, oil- resistant electrically insulating blocks that support the weight of the stator windings and immobilize the end turns. The end turns are attached to the blocks by hydrolytically stable, oil resistant electrically insulating tape. Other components of the insulation system are selected for their hydrolytic stability and oil resistance, and in some instances for their non- abrasive properties. For most applications con- templated by the invention, critical components of the insulation system have a dielectric strength of the order of 300 to 400 volts/mil and a continuous use temperature of the order of 400°F.

598714

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