Circuit breaker with sense bar to sense current from voltage dro

Details Circuit breaker with sense bar to sense current from voltage dro Circuit breaker with sense bar to sense current from voltage dro

1997-10-22

1998-11-03

Picard, Leo P.

Electricity: electrothermally or thermally actuated switches

Thermally actuated switches

With bimetallic element

337 36, 337 70, 337336, 335 35, 335 6, 335 37, H01H 7116, H01H 7500, H01H 7512, H01H 3752

Patent

active

058315098

ABSTRACT:
The stray inductance created by the loop formed by voltage sensing conductors connected to opposite ends of the bimetal in a miniature circuit breaker for determining load current is reduced by joining a voltage sense bar to the free end of the bimetal. The voltage sense bar extends beside the bimetal toward the fixed end of the bimetal where an insulated wire connected to the free end of the sense bar forms a twisted pair with an insulated wire secured to the fixed end of the bimetal.

REFERENCES:
patent: 3081386 (1963-03-01), Koenig et al.
patent: 4081852 (1978-03-01), Coley et al.
patent: 5224006 (1993-06-01), MacKenzie et al.
patent: 5301083 (1994-04-01), Grass et al.
patent: 5459630 (1995-10-01), MacKenzie et al.
patent: 5519561 (1996-05-01), Mrenna et al.
patent: 5706154 (1998-01-01), Seymour

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