Electrical machinery; a practical study course on installation, operation and maintenance (1921)
Annett, Fred Anzley · New York [etc.] McGraw-Hill book company · leaf 262
Fig. 260.—Field frame for compensated type motor. .3U-Ci—- … Fig. 261.—Field frame and windings for compensated-tvpe motor. 246 ELECTRICAL MACHINERY Motors with Compensating Windings.—In some applica-tions where the service conditions are very severe, interpolewindings are not sufficient to give sparkless commutation. Tomeet these conditions the pole faces…
Electric machinery
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