H - Electricity – 02 – H
Patent
H - Electricity
02
H
H02H 3/16 (2006.01) H02H 3/347 (2006.01) H02H 3/33 (2006.01)
Patent
CA 2243334
A ground fault protection circuit for plural loads connected across a power source with plural branches which can be used where the loads are unbalanced. Each branch includes a ground fault circuit interrupter device that has a common line for the electronics of the GFCI separate from the neutral line from the power source to the load where the common lines for the electronics for the ground circuit interrupter devices in each branch are connected to a common point. The ground fault protection circuit employs plural ground fault circuit interrupter devices and eliminates nuisance tripping. The common line for the electronics for a GFCI is routed through the core of the current sensing transformer of the GFCI. The separate neutral line for the electronics, connecting the common lines for the electronics for plural GFCI devices and routing the common lines for the GFCI electronics through the core of the transformer of each GFCI, eliminate improper GFCI operation due to unbalanced loading. The ground fault protection circuit may be used for a three phase power source.
Chan David
Gernhardt Paul
Leviton Manufacturing Co. Inc.
Ridout & Maybee Llp
LandOfFree
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