Signal processor module for ground fault circuit breaker
AssigneeGeneral Electric Company
InventorsRobert A. Morris, Paul T. Rajotte
Life of this patent
Estimating the term…
Abstract
The neutral excitation and differential current transformers of a ground fault circuit breaker are arranged for automated assembly onto the signal processor circuit board to complete the signal processor module prior to insertion within the ground fault circuit breaker housing. Electrical interconnection between the transformers is made by a unitary conducting strap having means therein for receiving the circuit neutral conductor. The completely assembled signal processor module is connected with the circuit breaker components by means of a single wire.
Claims7
A ground fault circuit breaker signal processor module comprising:
- printed circuit board means containing electric signal processor circuit components on one surface and electrically conductive pins extending through said printed circuit board to an opposite surface for providing electrical connection between said signal processor components and an external circuit;
- an apertured neutral excitation current transformer and an apertured differential current transformer spaced apart and arranged side by side on said opposite surface for sensing current through said external circuit;
- solenoid means on said opposite surface for responding to electric signals generated within said signal processor circuit upon the occurrence of ground fault current through said external circuit;
- and
- means on said printed circuit board defining an opening for providing electrical acess to said neutral excitation and said differential current transformers;
- said neutral excitation and differential current transformers being arranged over said opening and a connecting strap being arranged under said opening whereby a first pair of electrically conductive extensions on said connecting strap extend through said opening and at least partially through said neutral excitation and differential current transformer apertures.
Dependencies are inferred from the claim text.