Electrical machinery; a practical study course on installation, operation and maintenance (1921)
Annett, Fred Anzley · New York [etc.] McGraw-Hill book company · leaf 437
ed for starting motors ofless than 30 hp. At starting, the three stator windings areconnected in star, as shown in Fig. 490. The voltage acrosseach winding is equal to the line voltage (£) divided by theVS ov about 57 per cent of the line voltage; this is usuallysufficient to start the motor under… … K E _... FiQ. 490 Fig. 491 Fig. 490.—Three-phase star-connected winding.Pig. 491.—Three-phase delta-connected winding. It should be mentioned that in some cases it is possible tobring out low-voltage taps from the neutral of the trans-formers supplying the power and by means of a…
Electric machinery
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