Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 326
circuits thecontacts are immersed in insulating oil which quenches any arcthat forms. The oil switch in alternating-current circuits takes Art. 332] INDUCTION MOTOR APPLICATIONS 301 the place of the magnetic blow-out switches used in direct-currentcircuits. 332. Starting of Squirrel-cage Induction… … Fig. 351. -Connections for a small three-phase, squirrel-cage inductionmotor. Motors with an output of 5 h.p. or less are generallyconnected directly to the line without a starter, by means of adouble-throw switch such as that shown diagrammatically inFig. 351. This switch is so constructed that it…
Electrical engineering
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