Stationary induction apparatus containing uninflammable insulati

Details Stationary induction apparatus containing uninflammable insulati Stationary induction apparatus containing uninflammable insulati

1992-04-30

1994-08-09

Vo, Peter Dungra

Electricity: conductors and insulators

With fluids or vacuum

Boxes and housings

174 151, 257714, 336 57, 336 58, 336 94, H01F 2710

Patent

active

053368479

ABSTRACT:
An nonflammable insulating liquid is obtained by adding an emulsifying agent having a volume ratio of 1 to 3% to an insulating liquid containing a fluorocarbon liquid of at least 25% in a volume ratio to cause emulsification. In this liquid mixture, when polyol ester or dimethylcyloxane is used as the insulating liquid, an nonflammable insulating liquid that does not cause pollution or an environmental problem can be obtained. When tricresyl phosphate is used as the insulating liquid, an nonflammable insulating liquid having a dielectric constant close to that of insulating paper can be obtained. A liquid pipe for circulating a fluorocarbon emulsion in a tank is provided outside the tank, and a pump and a stirrer are connected midway along the liquid pipe to constantly stir the fluorocarbon emulsion, thereby preventing it from being separated into two layers. When a radiator is provided to the liquid pipe, the stirring system for the fluorocarbon emulsion can also serve as the cooling system.

REFERENCES:
patent: 3629758 (1971-12-01), Pearce, Jr.
patent: 4394635 (1983-07-01), Foss
patent: 4485367 (1984-11-01), Hashizume
patent: 4556511 (1985-12-01), Nishigaki et al.
patent: 4565901 (1986-01-01), Hirooka et al.
patent: 4581477 (1986-04-01), Harumoto et al.
patent: 4812262 (1989-03-01), Shinzawa et al.

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