Method of processing an electrical apparatus

Details Method of processing an electrical apparatus Method of processing an electrical apparatus

1977-05-31

1980-02-05

Smith, John D.

Coating processes

Measuring, testing, or indicating

55 41, 55 43, 29 2542, 427 79, 427 81, 427294, 427345, H01G 1304, B05D 512

Patent

active

041873270

ABSTRACT:
A method of processing an electrical apparatus, such as a capacitor, containing a polymeric dielectric material. The interior of the capacitor casing, which is at room temperature, is initially connected to a vacuum source to evacuate the interior of the casing and when a vacuum sensing unit indicates that the required vacuum has been obtained, a degassed dielectric liquid is supplied to the interior of the casing. A positive pressure is applied to the liquid in the casing to fully impregnate the polymeric layer. When the desired capacitance is obtained, the impregnation is complete and the unit is sealed.

REFERENCES:
patent: 2951002 (1960-08-01), Ruscito
patent: 2967788 (1961-01-01), Mathers
patent: 3258666 (1966-06-01), Dubilier
patent: 3335343 (1967-08-01), Moore et al.
patent: 3530561 (1970-09-01), Cox
patent: 3737961 (1973-06-01), Lapp et al.
patent: 3831234 (1974-08-01), Lapp et al.

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