Molded case circuit breaker current transformer with spiral bus

Details Molded case circuit breaker current transformer with spiral bus Molded case circuit breaker current transformer with spiral bus

1985-11-08

1986-12-16

Kozma, Thomas J.

Inductor devices

Core surrounding linear conductor

336223, 336225, H01F 1706, H01F 2730

Patent

active

046300180

ABSTRACT:
A current transformer is provided for the electronic trip unit of a molded case circuit breaker. The current transformer has a core with a winding encoiled about the core and a bus spiraled about the core. The spiral bus establishes a current path from one end of the bus to the other which will conduct current through the core in a spiral fashion. The spiral bus design effectively rotates the bus 90 degrees achieving a narrow transformer design which fits into the electronic trip unit without increasing the width of the trip unit.

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IBM Technical Disclosure Bulletin, J. K. Radcliffe, "Flat Winding Transformer", vol. 22, No. 9, Feb. 1980, pp. 4009-4012.

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