Current transformer having a rectangular iron core

Details Current transformer having a rectangular iron core Current transformer having a rectangular iron core

1986-03-05

1987-10-13

Kozma, Thomas J.

Inductor devices

Core surrounding linear conductor

29606, 336 65, 336192, 336198, H01F 2730, H01F 4006

Patent

active

047001666

ABSTRACT:
A current transformer comprises coil forms mounted on two opposite legs of a rectangular iron core, and insulating parts for insulating the iron core from a current bar which can be brought through the interior of the current transformer. The coil forms are connected together at both ends by an insulating part which surrounds at least partially the exposed legs of the iron core in U-fashion. For manufacturing a current transformer, the coil forms are first connected by assembling the insulating parts to the coil forms to form a frame into which L-shaped laminations are inserted to form the iron core. These laminations are connected at the abutting gaps by a welded seam. The current transformer is suitable particularly for use in low-voltage circuit breakers.

REFERENCES:
patent: 2544658 (1951-03-01), D'Entremont
patent: 2880401 (1959-03-01), Mercier
patent: 3243746 (1966-03-01), Doggart et al.
patent: 4238753 (1980-12-01), Bayer
Mitsubishi Electric 0482/AE-SG.

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