Small, Sidney Aylmer, 1876- [from old catalog] · Chicago, F. J. Drake & co · leaf 375
in them. Coils containing moisture aremore easily injured by overheating than those which arealready dry. Several hours, or even days, may be re-quired for thoroughly drying out. 376 ELEMENTARY ELECTRICITY REPAIRS TO ARMATURE COILS. Fig. 175 shows a section of the strap wound armaturecoils. The… … Fig. 175. Westinghouse Strap-Wound Rotary Converter Armature Coils. insulate. A blow upon a coil which forces one wirethrough the cotton insulation to the next wire will causea short-circuit, and a bruise or bend in the insulatingcell of *an armature coil may cause a ground. ROTARY CONVERTERS 377…
Electricity
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