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60 cycle A.C. Cranes acceleration adjustable voltage control adjustable voltage system adjustable-voltage amplidyne armature automatic belt breaker bridge buck-boost bucket bulk unloader bunker bus voltage cable capacity circuit coal alarm coal flow coal level switches coal scale coal stoppage alarms coke conductor rails constant potential contactors container container ship control system conveyor cost counter torque control counterweighted D.C. adjustable voltage designed device diesel-generator downspout dust duty cycle dynamic braking ELECTRICAL DRIVES electrical equipment Engineer Figure GARY STEEL gear hearth layer hoist control Hold and Close hopper installation limit switch load cell located lower M.G. set maintenance master switch material handling motor armature mounted operation pallets panel pier and shear power consumption pushbutton rated regenerative braking relay resistors reversing contactors rotating saturable reactor shaft shear leg shear pin shunt sinter machine sinter mix Sinter Plant spreader sprocket tachometer tare weight trolley rails type of coal volts weight wheel