US Patent Issued to Schweitzer Engineering Laboratories on July 28 for "High-impedance bus differential protection" (Washington Inventors)

ALEXANDRIA, Va., July 28 -- United States Patent no. 12,695,296, issued on July 28, was assigned to Schweitzer Engineering Laboratories Inc. (Pullman, Wash.).

"High-impedance bus differential protection" was invented by Marcos A. Donolo (Pullman, Wash.), Anushka M. Dissanayake (Pullman, Wash.), Pallavi Kulkarni (Pullman, Wash.) and Jay Hartshorn (Pullman, Wash.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system for high impedance bus protection that includes a safety module to divert excess current away from a protective element of an intelligent electronic device. The safety module may include a variable resistor and a bypass relay in parallel across secondaries of one or more current transformers. The...