AC/DC current sensor for a circuit breaker

Details AC/DC current sensor for a circuit breaker AC/DC current sensor for a circuit breaker

1995-05-30

1997-03-25

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific quantity comparison means

361 93, 324117H, H02H 326

Patent

active

056150750

ABSTRACT:
A current sensor has a closed loop magnetic flux concentrating ferromagnetic core with a gap and a central aperture for receiving a conductor. A Hall generator is positioned in the gap and a secondary winding is positioned on a portion of the core. Current flow in the conductor creates magnetic flux in the core which energizes the secondary winding to provide a power output. Magnetic flux concentrated in the gap causes the Hall generator to output a sensing signal that is proportional to the magnetic flux which is proportional to the current flow in the conductor. The single core is used to simultaneously produce a sensing signal proportional to alternating or direct current flow in the conductor.

REFERENCES:
patent: 2928048 (1960-03-01), Postal
patent: 3449703 (1969-06-01), Steen
patent: 3621334 (1971-11-01), Burns et al.
patent: 4591942 (1986-05-01), Willard et al.
patent: 4672501 (1987-06-01), Bilac et al.
patent: 4709339 (1987-11-01), Fernandes
patent: 5103163 (1992-04-01), Molyman
patent: 5196982 (1993-03-01), Landsberg et al.

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