Rewinding And Connecting Alternating Current Motors

First published in 1920, this comprehensive manual on armature winding and motor repair offers a detailed collection of practical electrical methods to fix motor and generator problems. To be used by maintenance specialists and electrical engineers, Daniel H. Braymer’s compilation of material was obtained through practical engagement in repair shop work, power station work and the maintenance of motors in industrial plants. Full of firsthand experience, the volume will provide answers to those needing assistance in armature winding and many other electrical problems that can occur within the workshop. Chapters in this volume include: Direct Current Windings Alternating Current Windings Repair Shop Methods for Rewinding D-C Armatures Testing Direct-Current Armature Windings Insulating Coils and Slots for D-C and A-C Windings Practical Ways for Reconnecting Induction Motors Inspection and Repair of Motor Starters, Motors and Generators Machine Equipment and Tools Needed in a Repair Shop Republished by Read & Co. Books, Armature Winding and Motor Repair continues to be considered a valuable asset within the subject. It provides a handy guide for any practical repairman looking to enlarge their knowledge of solving electrical problems while also appealing to amateurs just starting in the field.

Rewinding Small Motors describes the technique of rewinding various types of motors, such as split phase, capacitor-start, repulsion, repulsion-induction, repulsion-start, shaded pole, three-phase induction, universal, and d.c. The book describes in detail the rewinding process. The technician should start by determining the following: (1) coil connection; (2) number of turns per coil; (3) number of coils per pole; (4) the gauge of the wire; and (5) the space occupied by the winding. The book notes the importance of the varieties of wind and the various techniques adopted to obtain the optimum wind for any particular type of armature. Varnishing and finishing forms part of the whole operation; this adds insulation between turns, secures the whole winding against the action of centrifugal force, and also seals the part from moisture or dust. A motor-driven winding machine should have speed control, a lead-screw reverser, and a wire guide. The book points out that a coil cannot be wound anyhow as the coil voltage governs the technique of winding that is to be used. The book is suitable for fitters, engineers, apprentices, technicians, and students of mechanical or electrical engineering.