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Alternating Current

First 735 kV AC Transmission System
Society: IEEEMain Category: ElectricEra: 1960-1969DateCreated: 1965Hydro-QuebecMontréalState: QuebecCountry: CanadaWebsite: http://www.ieeeghn.org/wiki/index.php/Milestones:First_735_kV_AC_Transmission_System,_1965Creator: Hydro-Quebec

Hydro-Quebec's 735,000 volt electric power transmission system was the first in the world to be designed, built and operated at an alternating-current voltage above 700 kV. This development extended the limits of long-distance transmission of electrical energy. On 29 November 1965 the first 735 kV line was inaugurated. Power was transmitted from the Manicouagan-Outardes hydro-electric generating complex to Montreal, a distance of 600 km.

YearAdded:
2005
Image Credit: Courtesy Wikicommons/abdallahh (cc-by-2.0)Image Caption: A pylon of the 735kV power transmission system.Era_date_from: 1965
Society: IEEEMain Category: ElectricSub Category: AstronomyEra: 1890-1899DateCreated: 1897LotaCountry: ChileWebsite: http://www.ieeeghn.org/wiki/index.php/Milestones:Chivilingo_Hydroelectric_Plant,_1897Creator: Raby, William E.
Studies on the feasibility of building a hydro plant in the site were initiated in 1893. The increasing need for power that was cheaper and easily adapted to mine underground use drove the Lota coal mine company to develop a study of alternatives for this purpose. Engineer William E. Raby traveled to the United States and Europe to assess the use of electricity generation and transmission. The availability of the Chivilingo hydro resources arose as a better alternative to a steam plant.
YearAdded:
2001
Image Credit: Courtesy Wikicommons/B.diaz.cImage Caption: The Chivilingo Hydroelectric Power Plant was the first in Chile and only the second in South America. Era_date_from: 1897
Society: IEEEMain Category: ElectricalSub Category: CommunicationsEra: 1900-1909DateCreated: 1904General Electic CompanySchenectadyState: NYZip: 12306Country: USAWebsite: http://www.ieeeghn.org/wiki/index.php/Milestones:Alexanderson_Radio_Alternator,_1904Creator: Alexanderson, Ernst
"The Alexanderson radio alternator was a high-power, radio-frequency source which provided reliable transoceanic radiotelegraph communication during and after World War I. Ernst F.W. Alexanderson (1878-1975), a General Electric engineer, designed radio alternators with a frequency range to 100 kHz and a power capability from 2 kW to 200 kW.
YearAdded:
1992
Image Credit: Public Domain; Produced prior to 1/1/1923Image Caption: Alexanderson Radio AlternatorEra_date_from: 1904
AC Electrification of the New York, New Haven & Hartford Railroad (DUPE: IEEE+ASME)
Society: IEEEMain Category: ElectricalSub Category: Power, Energy & Industry ApplicationEra: 1900-1909DateCreated: 1907New York to New Haven to BostonCos CobState: CTCountry: USAWebsite: http://www.ieeeghn.org/wiki/index.php/Milestones:Alternating-Current_Electrification_of_the_New_York,_New_Haven_%26_Hartford_Railroad,_1907Creator: New York, New Haven & Hartford Railroad , Westinghouse Electric

This was a pioneering venture in mainline railroad electrification. It established single-phase alternating current as a technical and economical alternative to direct current. This concept exerted considerable influence over subsequent systems both in the United States and abroad. The major components of the system were developed by the engineering staffs of the New York, New Haven & Hartford Railroad and the Westinghouse Electric and Manufacturing Company of East Pittsburgh, Pennsylvania.

YearAdded:
1982
Image Credit: Courtesy of the New York Public Library.Image Caption: Alternating-Current Electrification of the New York, New Haven & Hartford RailroadEra_date_from: 1907
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