Method of impregnating a winding assembly of an electrical equip

Details Method of impregnating a winding assembly of an electrical equip Method of impregnating a winding assembly of an electrical equip

1992-04-21

1995-05-16

Lieberman, Paul

Coating processes

Vacuum utilized prior to or during coating

Metal base

427294, 427296, 427369, 427370, 427435, 427116, B05D 132, B05D 302, B05D 722, B05D 720

Patent

active

054158923

ABSTRACT:
A method of impregnating a winding assembly of an electrical equipment with varnish, the winding assembly including a core and one or more windings wound on the core, the method comprising steps of enclosing the winding assembly in a bag, pouring a predetermined amount of varnish into the bag enclosing the winding assembly, reducing an atmospheric pressure in the bag and thereafter, maintaining the bag in the air-tightly closed state so that the winding of the winding assembly is impregnated with the varnish poured into the bag, and drying the winding assembly after completion of the step of impregnating the winding with the varnish.

REFERENCES:
patent: 3904785 (1975-09-01), Baumann
patent: 3937855 (1976-02-01), Gruenwald
patent: 3991232 (1976-11-01), Kamiuchi et al.
patent: 4222802 (1980-09-01), Sakai et al.

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