Application of Protective Relays and Devices to Distribution Circuits

The Relays Committee has been studying present distribution circuit practices for several years. To give fellow engineers a review of present practices, trends, and special problems in distribution circuit protection, a Working Group on Distribution Circuit Protection sent a letter to all members of the Relays Committee. More than two dozen co-operating utilities replied to this request for a description of their distribution system together with a statement of the problems encountered in its protection.