8.43 When an automatic autotransformer starter is used, the motor is usually accelerated in two stages. The START contactor applies reduced voltage through a three-phase autotransformer, usually located with the control unit. After a short ... Three two-pole contactors, designated in the wiring diagram shown in Fig. 8-8 asanbsp;...
Title | : | AC Control Equipment |
Author | : | John J. Gammuto, Steven D. Devine, Thomas T. Vogen |
Publisher | : | - 1992 |
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