Circuit Breaker Development and Application - 2 Volume Set. Volume 1 - Phase I Report.
Paice DA; Shimp AE; Putkovich RP
NTIS: PB/248-310 Available for Reference At Bureau Libraries :165 pages
Mine electrical system parameters were determined using the data contained in survey reports of five different coal mines. The typical electrical characteristics of the trolley-rail distribution system were calculated, and worst case conditions for fault protection were defined. Calculated system parameters were corroborated by underground measurements in a working coal mine. Concepts for providing a fault discriminating circuit breaker were investigated, and one scheme was selected for development. A laboratory prototype of the discriminating breaker suitable for evaluation in a mine was built and tested.
CP; Final Contract Report;
NTIS Accession No.
NTIS: PB/248-310 Available for Reference At Bureau Libraries
Westinghouse Electric Corp.