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 86
O ELECTRIC MACHINERY. left for wave-wound armatures. In Fig. 42 is depicted anarmature core ready for winding, with some formed coilsin different stages of completion. One-turn armature coils for large dynamos, having con-ductors of large sectional area, which do not permit ofbending, are composed… … Fig. 41. Before placing the armature coils in the slots, the latterare generally lined with insulating material, such as mica-nit e, fiber, and a paper pulp known as presspahn. Thethickness of slot insulation depends upon the terminal volt-age of the machine, and should be capable of…
Electric machinery
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