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Development of Fail Safe Trolley Energizing/de-energizing System.
Kimmel-DS; Shimp-AB; Paice-DA; Putkovich-RP
NTIS: PB/299-560 :44 pages
The Bureau of Mines sponsored development of a system to remotely energize and deenergize the trolley wire in a section in response to demands from vehicles as they enter and leave the controlled section. The system developed uses a detector-actuator that controls a DC contactor at the outby end, and a 3-khz oscillator at the inby end. A prototype system has been built and installed at the Bureau's trolley test site in Bruceton, Pennsylvania, that has demonstrated the ability to also provide load discrimination for faults of 300 amperes or more. The system could readily be modified by locating the oscillator on the vehicle to provide automatic deenergizing of the trolley wire when the vehicle's pole is removed or the vehicle leaves the section.
CP; Final Contract Report;
NTIS Accession No.
Westinghouse Electric Corp.
Page last reviewed: March 11, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division