Advanced ground fault circuit interrupters (GFCI) and methods of operation thereof
AssigneeZe Chen
InventorsZe Chen, Boon Lum Lim, Samuel Raj
Life of this patent
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AssigneeZe Chen
InventorsZe Chen, Boon Lum Lim, Samuel Raj
Estimating the term…
In one example, a ground fault circuit interrupter is provided. It may include a current imbalance detection circuit configured to provide a leakage signal and a main processing circuit including a processor. The leakage signal may correspond to a current imbalance between a supply path and a return path. The processor may be configured to receive the leakage signal, analyze a time pattern of the leakage signal, determine whether a ground fault exists based on analysis of the time pattern, and generate a first trigger signal if the ground fault is determined to exist. The ground fault circuit interrupter may further include a back-EMF detection circuit configured to provide a back-EMF detection signal. Methods for detecting and responding to a ground fault are also provided.
A ground fault circuit interrupter, comprising:
A ground fault circuit interrupter, comprising:
A method for placing a tripped ground fault circuit interrupter in a mechanically permanent end-of-life state, comprising:
Dependencies are inferred from the claim text.