Single-phase three-legged core for core type transformer

Details Single-phase three-legged core for core type transformer Single-phase three-legged core for core type transformer

1976-11-30

1979-01-23

Kozma, Thomas J.

Inductor devices

With temperature modifier

Ventilating passages

336217, H01F 2708, H01F 2726

Patent

active

041363221

ABSTRACT:
A single-phase three-legged core for a core type transformer in which a plurality of steel sheets constituting each layer of laminations of a main leg are jointed at their diagonally cut sides to corresponding sides of a plurality of steel sheets constituting each layer of laminations of yokes to form a plurality of joints. At the inner corner portion of each joint, a recess is provided along the main leg or yoke steel sheet having a greater width than the other, so that a plurality of main leg laminations having stepwise varying width can be jointed to a plurality of yoke laminations at the same joint angle in the area of the recesses thereby simplifying the step of sheet cutting. At the outer corner portion of some of the joints, the vertex of the diagonally cut side of the corresponding main leg steel sheet mates with that of the associated yoke steel sheet to provide an outer corner joint, so that magnetic flux can uniformly pass through the joints to minimize the core loss.

REFERENCES:
patent: 2300964 (1942-11-01), Putman
patent: 2407625 (1946-09-01), Brand
patent: 3064220 (1962-11-01), Specht
patent: 3069643 (1962-12-01), Stein et al.
patent: 3129377 (1964-04-01), Monroe et al.
patent: 3183461 (1965-05-01), Tipton
patent: 3283281 (1966-11-01), Stein et al.
patent: 3569886 (1971-03-01), Specht
patent: 3743991 (1973-07-01), Gumpper et al.

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