Abstract
THIS book is arranged in the form of notes on motors and control gear, and contains a lot of useful information in a small space. It is intended chiefly for electricians engaged in the maintenance and installation of such plant. No attempt is made cover any aspects of design, but starting conditions and their effect on acceleration and control gear are discussed briefly, graphical examples being given for squirrel-cage and slip-ring motors. A valuable feature is the inclusion of speed-torque characteristics of various types of single-phase motors. There is a useful chapter on protective gear, and the final chapter gives examples of connexions of typical control gear for D.C., single-phase and three-phase motors.
Electric-Motor Control Gear : Starting, Protection and Speed
By J. L. Watts. Pp. 96. (London: Iliffe and Sons, Ltd., 1948.) 5s. net.
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D., A. Electric-Motor Control Gear : Starting, Protection and Speed. Nature 163, 6 (1949). https://doi.org/10.1038/163006b0
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DOI: https://doi.org/10.1038/163006b0