International Library of Technology · Scranton, International Textbook Co. · leaf 409
place. vSlot insulation is usually madeup in the form of troughs or tubes composed of alternatelayers of pressboard and m.ica. The mica is depended uponmainly for the insulation, the pressboard being used as abonding material to hold the mica in place. These tubesmay be either made up separately or… … Fig. 1614. slot insulation for the armature winding shown in Fig. 1512,Theory of Alternating-Current Apparatus. The hardwoodstrip a is first laid in the bottom of the slot, and thepaper and mica trough b formed in place before the bondingvarnish becomes dry. The coil c^ consisting of several…
Electrical engineering
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