Face connected instrument transformer

Details Face connected instrument transformer Face connected instrument transformer

1986-05-07

1987-12-15

Kozma, Thomas J.

Inductor devices

With outer casing or housing

Internal inductor support

336107, 336142, 336175, 336192, 361 38, 361392, H01F 2704, H01F 2902

Patent

active

047136421

ABSTRACT:
A face connected instrument transformer is disclosed having a plurality of transformation ratios comprised of two primary windings and a single secondary winding. Each primary winding is electrically connected to a pair of terminals disposed adjacent to opposite faces of the transformer housing for engaging contacts within a molded case circuit breaker housing. The transformation ratio of the instrument transformer is changed by removing the instrument transformer from the circuit breaker housing and inserting the opposite face.

REFERENCES:
patent: 1741265 (1929-12-01), Wappler
patent: 2149529 (1939-03-01), LaFave
patent: 2590821 (1952-03-01), Kiser
patent: 2878433 (1959-03-01), Beresford
patent: 3034000 (1962-05-01), Todd
patent: 3246272 (1966-04-01), Wiley
patent: 3581259 (1971-05-01), Burnside
patent: 3996546 (1976-12-01), Hugly
patent: 4156222 (1979-05-01), Rossman et al.
patent: 4232260 (1980-11-01), Lambkin
Radio and Television, Jan. 1940, "2-Band Coil," Frederick Price, p. 532.

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