Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 447
losed in a triangularframe which is bolted to the end platesholding the rotor laminations together.The whole of this resistance is in serieswith the secondary winding at starting.As the motor increases in speed, the resistance is short-circuitedby sliding spring metal brushes along the inside… … Fig. 345. Westinghouse Controllerfor Induction Motors 402 ALTERNATING-CURRENT MACHINERY 385 rings is generally used for cranes, hoists, elevators, and other workwhere variable speed is required. The starting resistance used inthe type of rotor shown in Fig. 343 is designed to carry the rotorcurrent…
Electrical engineering
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