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Outlines the basic steps and procedures commonly used for testing three-phase, AC motors rated 600 volts or less, including preliminary insulation resistance, continuity and no-load tests, as well as the single-phase test for rotors.
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Covers all necessary steps for layer-winding DC field coils, how to layer-wind a shunt field coil, how to reinsulate an interpole field coil, and how to install large field coils in the frame.
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Illustrates procedures for manufacturing random-wound interpole and main field coils for DC machines. Covers everything from removing old coils and taking data to installing and connecting new coils, including how to construct winding forms and jigs, how to shape coils to conform with the curvature of the field frame and how to insulate field coils. Both “wet” and “dry” winding techniques are illustrated.
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Describes the correct procedure for taking data from hand-wound DC armatures. Shows how to record the data on typical DC data sheets, and explains the terminology used describing DC data. Points out differences between lap and wave windings.
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Step-by-step assembly of a capacitor motor, including installation of both ball and sleeve bearings. Shows tools needed and how to align parts marked during disassembly.
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Shows proper procedures for inserting concentric coils into a single-phase stator. Shows tools and insulations and points out relationship between running and starting winding coils.
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Shows method of winding concentric coils, which includes determining the coil width for the various size coils within each group, how to set the concentric winding head and select the proper grooves for winding the coils. Also shows how to wind coils using the Holden Head.
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Step-by-step disassembly of a capacitor motor, both ball bearing and sleeve bearing. Includes bearing removal (both types), plus operation and replacement of various types of starting switches and governors. Stripping not included.
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Shows step-by-step procedure for properly determining and recording the type of connection, number of parallel circuits, turns per coil, wire size, span and groups, and how to distinguish between running and starting windings.