Electric Motor for Alternating Current

Description (Brief):

An electric motor was one of the critical components needed to make an electrical power system based on alternating current. Electrical inventor Nikola Tesla developed a revolutionary motor based on electromagnetic induction that featured rotating magnetic fields to drive the central armature. Engineers working for George Westinghouse refined Tesla’s concept and introduced this model A two-phase motor in 1888. The armature core is of the Siemens drum-type, a design intended to minimize the number of wire windings.

Description (Brief)

Westinghouse 2-phase induction motor marked "M-68". Metal plate reads: " The Westinghouse Electric Co. Pittsburgh, 271". Case has radial fins for heat dissipation. Connection is made through two binding posts on the base. An electrodynamic rotation motor designed by Nikola Tesla, without commutator or contact brushes. A series of field magnets are built of laminated sheet iron and wound with two sets of coils. Two alternating currents are sent through the field at the same time, one a 1/4 phase behind the other. References: Electrical World, vol. 12, 27 October 1888, pages 221-223. Westinghouse Engineer, January 1950, page 72.

Date Made: 1888

Maker: Westinghouse Electric & Manufacturing Co.

See more items in: Work and Industry: Electricity, Energy & Power, American Enterprise

Exhibition: American Enterprise

Exhibition Location: National Museum of American History

Credit Line: from Westinghouse Electric & Manufacturing Co., thru C. F. Wagner

Data Source: National Museum of American History

Id Number: EM.315975Accession Number: 223204Catalog Number: 315975

Object Name: electric motorinduction motor

Physical Description: steel (overall material)copper (overall material)Measurements: overall: 11 1/4 in x 11 in x 8 in; 28.575 cm x 27.94 cm x 20.32 cm

Guid: http://n2t.net/ark:/65665/ng49ca746a5-6828-704b-e053-15f76fa0b4fa

Record Id: nmah_739995

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