Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Hitachi Ltd
Original Assignee
Hitachi Ltd
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Publication date
Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP7991877ApriorityCriticalpatent/JPS5415249A/en
Publication of JPS5415249ApublicationCriticalpatent/JPS5415249A/en
PURPOSE: To improve the economy of an elevator driven by a two-winding two-speed three-phase induction motor by providing 1:3 of the ratio of the number of poles in the two windings of the motor.
COPYRIGHT: (C)1979,JPO&Japio
JP7991877A1977-07-061977-07-06Device for controlling elevator
PendingJPS5415249A
(en)