Impregnation and encapsulating material

Details Impregnation and encapsulating material Impregnation and encapsulating material

1986-06-04

1988-11-22

Griffin, Donald A.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

361323, 361433, H01G 422, H01G 317, H01G 900

Patent

active

047870109

ABSTRACT:
A capacitor in which the capacitive element is impregnated and encapsulated by a composition having a softening point above the normal operating temperature of the capacitor and below the temperature that would occur following a failure of the capacitive element (or in another aspect below the temperature at which the polypropylene film of a polypropylene film capacitor shrinks). In other aspects the composition is a blend of polybutene and polyethylene; and a method of impregnating a capacitor is provided.

REFERENCES:
patent: 2719182 (1955-09-01), Ross et al.
patent: 2931961 (1955-02-01), Robinson
patent: 2940025 (1960-06-01), Markarian
patent: 3277350 (1966-10-01), Pearce et al.
patent: 3277354 (1966-10-01), Ikeda et al.
patent: 3402237 (1968-09-01), Holzinger
patent: 3430116 (1969-02-01), Johnstone
patent: 3585468 (1971-06-01), Chertok et al.
patent: 3608023 (1971-09-01), Scarborough
patent: 3996505 (1976-12-01), Lapp et al.
patent: 4020214 (1977-04-01), MacKenzie, Jr.
patent: 4348712 (1982-09-01), Newcomb
patent: 4577257 (1986-03-01), Erhardt et al.

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