Abstract
ASTEAM-ELECTRIC power station in general consists not only of such major items as boiler equipment, steam-turbine-generator units and condensers, but also of many auxiliaries. These auxiliaries now have come to be almost exclusively a-c-motor-driven, although steam-driven auxiliaries are used occasionally in some topping installations where their use improves the heat cycle and in other cases for stand-by service. Since the reliability of a station can be no better than the reliability of its auxiliaries, the power-supply system for these auxiliaries, as well as the associated motors and control, become important items in the design of a steam-electric-power station.
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