Title :
Pilot-wire relaying utilizing the product differential relay
Author :
Ward, R. I. ; Gilman, D. W.
Author_Institution :
Commonwealth Edison Company, Chicago, Ill.
Abstract :
This pilot-wire relaying scheme has been designed to take advantage of the product characteristic of the type CFD relay. It operates as a variable percentage differential relaying device on light fault currents and for all practical purposes as a phase angle comparison scheme on heavy fault currents.
Keywords :
Circuit faults; Coils; Computational fluid dynamics; Current transformers; Relays; Windings; Wires;
Journal_Title :
Electrical Engineering
DOI :
10.1109/EE.1954.6439242
