Abstract: The disclosure describes a device for detecting undervoltage conditions on multi-phase alternating current circuits which senses the voltage on the phase having the highest instantaneous positive voltage. A differential between pickup and dropout voltage is provided. Also provided is a delayed pickup following a return to normal voltage on the circuit being monitored.
Abstract: A high voltage switch including a rotatable insulating column adjusted by means of an operating arm assembly including two bolt circles of equal radius and unequal spacing.
Type:
Grant
Filed:
May 3, 1974
Date of Patent:
January 13, 1976
Assignee:
Westinghouse Electric Corporation
Inventors:
Stanislaw A. Milianowicz, Steven J. Swencki, Jr.