Abstract
The winding in which the e.m.f. is induced in a three-phase source consists essentially of three separate windings so disposed that there is a phase difference of 120° between each pair. Diagrammatically the arrangement is that of figure 15.1. Each separate winding is called a phase. In the diagram of induced e.m.f.s the arrows indicate the positive direction of the e.m.f. for each particular phase. If all three phases were kept separate a six-conductor line between source and load would be necessary. By interconnecting the phases the number can be reduced to three; in one special case four. There are two methods.
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© 1973 H. Cotton
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Cotton, H. (1973). Three-Phase Working. Rotating Magnetic Fields. In: Basic Electrotechnology. Palgrave, London. https://doi.org/10.1007/978-1-349-01705-8_15
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DOI: https://doi.org/10.1007/978-1-349-01705-8_15
Publisher Name: Palgrave, London
Print ISBN: 978-0-333-14311-7
Online ISBN: 978-1-349-01705-8
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