Creeping discharge and partial discharge prevention means for a

Details Creeping discharge and partial discharge prevention means for a Creeping discharge and partial discharge prevention means for a

1975-03-13

1976-08-17

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

174 73R, 174127, 310256, H02K 340

Patent

active

039756530

ABSTRACT:
A creeping discharge and partial discharge-prevention means for a stator coil end of a rotary electric machine is disclosed. It includes an grounding electrode on an insulator of the stator coil end of the rotary electric machine, a first electrical stress grading coated layer on the insulator of the coil end including the end of the grounding electrode, a shield insulator made of insulation material around the first electrical stress grading coated layer including the end of the grounding electrode, a shield electrode electrically connected to the grounding electrode around the shield insulator, and a second electrical stress grading coated layer coated on the shield insulator including the end of the shield electrode.

REFERENCES:
patent: 1784997 (1930-12-01), Schenkel
patent: 3210460 (1965-10-01), Suelmann
patent: 3508096 (1970-04-01), Kull et al.
patent: 3631519 (1971-12-01), Salahshourian

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