Swanton Hydro-Electric
History of the Orman E. Croft Power Dam
5 hydroelectric generators with the following characteristics as a combined operating system:
Totals:
Production: 11.964 Megawatts.
Annual Production: 55,382 MWH.
Water Flow: 1800 cubic feet of water per second.
Head Water Elevation: 190 feet above sea level.
Tailwater Elevation: 105 feet above sea level.
Individual Generating Units:
Unit # 1: General Electric AC Generator installed in 1930. Excitation is provided by a Basler static exciter. Voltage: 7200 volts, Speed: 360 revolutions per minute, Cycles: 60hz., Phase: 3,Power Factor: 0.8, Production: 1,170 Kilowatts. The Turbine unit is a Francais type, Rated Horsepower: 1,340 hp, Discharge: 224 cubic feet of water per second.
Unit # 2: Westinghouse AC Generator installed in 1928. Excitation is provided by a Basler static exciter.
Voltage: 7200 volts, Speed: 360 revolutions per minute,
Cycles: 60 hz., Phase: 3,Power Factor: 0.8, Production: 1,012 Kilowatts. The Turbine unit is a Francais type,
Rated Horsepower: 1,340 hp, Discharge: 224 cubic feet of water per second.
Unit # 3: Westinghouse AC Generator installed in 1954. Excitation is provided by a Basler static exciter.
Voltage: 7200 volts, Speed: 257 revolutions per minute,
Cycles: 60 hz., Phase: 3, Power Factor: 0.8, Production: 3,500 Kilowatts. The Turbine unit is a Francais type,
Rated Horsepower: 4,070 hp, Discharge: 558 cubic feet of water per second.
Unit # 4: National Industrial AC Generator installed in 1990. Excitation is provided by a Basler static exciter.
Voltage: 7200 volts, Speed: 211.8 revolutions per minute, Cycles: 60hz, Phase: 3, Power Factor: 1.0, Production: 5,850 Kilowatts. The Turbine unit is a Francais type, Rated Horsepower: 7,600 hp, Discharge: 900 cubic feet of water per second.
Unit #5: OSSBERGER turbine, Hitzinger generator: construction and installation into minimum flow building in September 2011, and in production in March 13, 2012. Unit is a horizontal intake, horizontal shaft double cell, cross flow design impulse type turbine, with draft tube effect. Rated at static Head =44.6ft=13.6m. full flow= 200cfs, partial flow= 35cfs. Normal speed 900 rpm with an over speed of 2010 rpm. Tp parent power is 650KVA at full flow with a frequency of 60Hz.
