US Patent Issued to Google on Sept. 15 for "Current transformer polarity verification" (Virginia, California Inventors)

ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,738,416, issued on Sept. 15, was assigned to Google LLC (Mountain View, Calif.).

"Current transformer polarity verification" was invented by Hammad Ahmad Khan (Leesburg, Va.), Kei Hao (Anaheim, Calif.) and Krishnanjan Gubba Ravikumar (Ashburn, Va.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for verifying current transformer polarity for one or more current transformers. In one aspect, a method comprises for each input power leg of a protected device, injecting a first test current into a first primary node H1 of a respective current transformer to indu...