Hawkins electrical guide. Questions, answers & illustrations; a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 231
it is necessary to change it to 60 cycles bymeans of a frequency changer shown in fig. 2,069 for distributionin the outlying districts. CONVERTERS 1.489 The two machines in this combination are of the same con-struction, only the synchronous motor would have eight polesand have the 25 cycle current… … Fig. 2.0TO.—General Electric four unit frequency changer set consisting of a 11.000 voltsynchronous motor, 13.200 volt alternator, 250 vo.t exciter, and 440 volt starting inductionmotor. Where parallel operation is required between synchronous motor driven frequencychangers, a mechanical adjustment…
Electrical engineering
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