ALEXANDRIA, Va., June 12 -- United States Patent no. 12,298,356, issued on May 13, was assigned to ABB Schweiz AG (Baden, Switzerland).
"System and method for grounded-neutral fault detection" was invented by Chandrashekar Nagawaram (Hyderabad, India), Lucas J. McPhee (Unionville, Conn.) and John P. Filipetti (Bloomfield, Conn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A fault detector detects grounded-neutral faults. The fault detector is configured to: receive a first signal from a first induction circuit, the first induction circuit configured to detect a current imbalance between a line conductor and a neutral conductor; determine a first frequency and a first phase of a noise signal component of th...