S&c Electric Company

Andrew D Pfister

Roy T Swanson

Michael G Ennis

Richard George Smith

Keith W Benson

Richard P Mikosz

Jason R Bogusz

Gary W Hardesty

Thomas E Kovanko

Raymond P O'Leary

Thomas J Tobin

Todd W Klippel

Raymond P O'leary

Keith Iv Benson

A fault interrupting and reclosing device includes a circuit interrupter coupled to an actuator. The actuator includes at least one force generating element for generating an opening force for opening the circuit interrupter and for generating a restoring force to close the circuit interrupter. The device further includes a latch to engage the actuator to hold the contacts open once opened. In a preferred arrangement, the device is provided with an automatic mode of operation including a reclose process and a non-reclosing mode of operation. The device also preferably includes a method of determining the end-of-life of a vacuum interrupter monitors characteristics and/or parameters of a fault current or vacuum interrupter operation to predict a percent of life consumed with each fault current interruption operation. A cumulative percent of life consumed may also be determined, and an end-of-life may be predicted based upon the cumulative percent of life consumed.

Method of determining end-of-life of a fault interrupting device

Fault interrupting and reclosing device

A control method and arrangement is provided that monitors the condition and operating parameters of a power electronic system having power electronic devices to optimize operation of the power electronic system. Further, electrically isolated power supplies to individual control stages for high-voltage, series-connected switch devices/power electronic devices.

Control arrangement and isolated power supplies for power electronic system

Growing community of inventors

Rolling Meadows, IL, United States of America

Andrew D Pfister