H - Electricity – 01 – F
Patent
H - Electricity
01
F
H01F 38/28 (2006.01) G01R 35/00 (2006.01) H01F 27/34 (2006.01) H01F 38/30 (2006.01) H01H 83/00 (2006.01) H01H 83/14 (2006.01) H01F 27/26 (2006.01) H01F 30/16 (2006.01)
Patent
CA 2326798
A current transformer (10) for a ground fault circuit breaker used on a circuit having at least one line conductor (12) and a neutral conductor (14) includes a toroidal core (16) having a circular opening defining a center point and a multi-turn winding (18) wound on the core (16). A first guide member (20) is disposed on one side of the core (16), and a second guide member (20) is disposed on another side of the core (16). The first and second guide members (20) each have a hole (26) for receiving the line conductor (12) and a hole (26) for receiving the neutral conductor (14) formed therein. The guide members (20) thus position the conductors (12, 14) with respect to the core (16). The present invention also includes a method of correcting asymmetries in the current transformer (10). The method includes measuring the magnitude and orientation of any asymmetries, and then altering the current transformer (10) based on the measured magnitude and orientation of the asymmetries so as to eliminate the asymmetries.
Baertsch Richard D.
Tiemann Jerome J.
Company General Electric
Craig Wilson And Company
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