Single phase dry-type transformer

Details Single phase dry-type transformer Single phase dry-type transformer

1994-09-20

1997-04-15

Thomas, Laura

Inductor devices

With temperature modifier

Ventilating passages

336205, 336206, 336196, H01F 2708

Patent

active

056213727

ABSTRACT:
A single phase, dry type transformer has an iron core, high voltage windings embedded in cast resin, and low voltage windings resin encapsulated. The low voltage winding is constructed with flexible sheet conductors. Insulating material includes a means to secure the windings in place during a vacuum and pressure resin impregnation process. The result is a coil that exhibits high short circuit protection due to the tightly bond conductors comparable to completely resin encased molded transformers at a substantially reduced cost.

REFERENCES:
patent: 3203823 (1965-08-01), Grimes
patent: 3246271 (1966-04-01), Ford
patent: 4039990 (1977-08-01), Philp
patent: 4173747 (1979-11-01), Grimes et al.
patent: 4337569 (1982-07-01), Pierce
patent: 4488134 (1984-12-01), Pfeifter
patent: 4496926 (1985-01-01), Kubo et al.
patent: 4649640 (1987-03-01), Ito et al.
patent: 4663604 (1987-05-01), Van Schaick et al.
patent: 5036580 (1991-08-01), Fox et al.

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