Current transformer

Details Current transformer Current transformer

2011-06-28

2011-06-28

Nguyen, Tuyen (Department: 2832)

Inductor devices

Winding with terminals, taps, or coil conductor end...

Reexamination Certificate

active

07969271

ABSTRACT:
A current transformer includes a bobbin, a primary winding coil, a conductive pillar, a magnetic core assembly, and a covering member. The bobbin includes a bobbin body and a concave structure. The primary winding coil is wound around the bobbin body. The conductive pillar is partially accommodated within the concave structure. The magnetic core assembly includes a first magnetic core and a second magnetic core. The first magnetic core and the second magnetic core are partially embedded into the channel. The concave structure is partially enclosed by the second magnetic core. The covering member cooperates with the concave structure to shield the conductive pillar. The conductive pillar and the second magnetic core are separated from each other by the covering member, so that a creepage distance between the conductive pillar and the primary winding coil and a creepage distance between the conductive pillar and the magnetic core assembly are increased.

REFERENCES:
patent: 4200853 (1980-04-01), de Jong et al.
patent: 5181004 (1993-01-01), Johnson
patent: 6072380 (2000-06-01), Monroe
patent: 6507261 (2003-01-01), Haga et al.

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