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Development of Dual Input/dual Purpose Power Converter for Trolley Wire Operation.
Paice-DA; Kimmel-DS; Putkovich-RP
NTIS: PB/81-179434 :62 pages
A power supply to operate fluorescent or mercury vapor lamps from 300-volt DC coal mine trolley wires was developed for the Bureau of Mines. A high-frequency regulated inverter unit incorporates ballasts for a mix of lamp loads up to 650 watts. For 600-volt trolley systems an additional power converter unit was developed to step down the DC voltage to 300 volts for the inverter unit. Both units have operated in a working coal mine for more than 12 months without need of servicing. The lamp load included two 100-watt mercury vapor head lamps and six 75-watt fluorescent lamps.
CP; Final Contract Report;
NTIS Accession No.
Westinghouse Electric Corp.
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division