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Ring frame motors

Since card and ring frame motors are normally mounted inside the machine frame, there is an obvious obstruction in the cooling. With this in mind and to meet the torque requirements, the common practice is to choose the next... [Pg.167]

Ring frame or. spinning frame motors (IS 2972 Part III)... [Pg.167]

By comparison the induction motor has a much simpler rotor construction compared to the synchronous motor. When designed for use with variable speed drives the induction motor no longer has to satisfy the demands a direct online start which allows the design of the rotor to be optimized for performance. The rotor is constructed from simple copper bars, which are brazed to one-piece end rings and supported by a steel frame. By increasing the copper content it is possible to achieve significantly lower losses, higher efficiency and low temperature operation. In addition, the rotor has no insulated components. [Pg.142]

See other pages where Ring frame motors is mentioned: [Pg.165]    [Pg.1736]    [Pg.261]    [Pg.166]    [Pg.95]    [Pg.95]    [Pg.823]    [Pg.1740]    [Pg.154]    [Pg.397]    [Pg.536]   


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