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Development of dual input/dual purpose power converter for trolley wire operation. Open file report (final) 1 May 1977-31 October 1978

Technical Report ·
OSTI ID:5857558
; ;

A power supply to operate fluorescent or mercury vapor lamps from 300-volt dc coal mine trolley wires has been 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 over 12 months without need for servicing. The lamp load in these tests included two 100-watt mercury vapor head lamps and six 75-watt fluorescent lamps.

Research Organization:
Westinghouse Electric Corp., Pittsburgh, PA (USA). Research and Development Center
OSTI ID:
5857558
Report Number(s):
PB-81-179434
Country of Publication:
United States
Language:
English

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Related Subjects

01 COAL, LIGNITE, AND PEAT
012000* -- Coal
Lignite
& Peat-- Mining
42 ENGINEERING
422000 -- Engineering-- Mining & Underground Engineering-- (1980-)
COAL MINES
ELECTRICAL EQUIPMENT
ELECTRONIC EQUIPMENT
ENERGY SYSTEMS
EQUIPMENT
FLUORESCENT LAMPS
INVERTERS
LIGHT BULBS
LIGHTING SYSTEMS
MINES
POWER SUPPLIES