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 138
re-entrantlap winding having 34 inductors. Li this case the front pitch is +9, 117 108 DIRECT-CURRENT DYNAMOS the back pitch is —5, and the commutator pitch is +2, while thereare 8 paths in parallel through the armature. Four brushes only arerequired, and inspection shows this to be a progressive… … Fig. 133. Four-Pole Drum Doubly Re-entrant Lap Winding (6) In a simplex winding, every inductor must be passed over onceonly, and the winding must close upon itself, or be re-entrant. (c) If the winding is re-entrant it must finally close upon itself. (d) In a multiplex winding, each simplex…
Electrical engineering
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