Dynamo electric machinery; its design, construction, and operation; direct-current machines (1915)
Sheldon, Samuel, 1862-1920, Hausmann, Erich, 1886- joint author · New York, D. Van Nostrand Company; · leaf 72
d- 6o DYNAMO ELECTRIC MACHINERY. ing pitches are different, in which case the mean winding pitch is /[ = Xr + Xj There exists a definite relation between the total numberof inductors on the surface of an operative armature, thenumber of pairs of poles, and the winding pitch. For thewave winding,… … ARMATURES. 6i A six-pole wave winding for a drum armature having 31slots is shown in Fig. 27. There are 62 inductors, theeven and odd numbered ones representing the lower andupper inductors in the slots respectively. The windingpitches for this armature are K =- 9>Xf= II,and >^ = 10. A…
Electric machinery
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