Transformer zero-phase current transformer

Details Transformer zero-phase current transformer Transformer zero-phase current transformer

1995-03-15

1997-11-25

Kozwa, Thomas J.

Inductor devices

With outer casing or housing

336174, 336175, H01F 2702, H01F 4006

Patent

active

056916868

ABSTRACT:
A control unit accommodates various equipment, such as a circuit breaker, an electromagnetic switch, a zero-phase current transformer, and an operating transformer. The zero-phase current transformer is generally triangular-shaped to fit more compactly within the control unit. More specifically, the zero-phase current transformer comprises an annular core having a shape which is substantially triangular, wherein the annular core encloses an aperture region having a shape which is also substantially triangular. A primary conductor is disposed within the aperture region, and a secondary conductor is wound on the annular core.

REFERENCES:
patent: 1814225 (1931-07-01), Weiss
patent: 2471411 (1949-05-01), Claesson
patent: 2616070 (1952-10-01), Corbino
patent: 2702887 (1955-02-01), Joublanc
patent: 3168698 (1965-02-01), Goody et al.
patent: 4178624 (1979-12-01), Wilson
patent: 4380785 (1983-04-01), Demeyer
patent: 4602313 (1986-07-01), Takahashi

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