Transcript Photoelectrochemistry

Motor Starting Methods
 Across-the-Line Starting
Motor Starting Methods
 Reduced-Voltage-Starting.
 Used when starting current is too high for the
system to tolerate.
 Need special method such as timers or speed
switches to make the transition from reduced
voltage to full voltage.
 Transition usually timed so that it occurs when
rotor is at 90% of rated speed.
Motor Starting Methods
 Resistor Starting.
Motor Starting Methods
 Reactor Starting.
Motor Starting Methods
 Autotransformer Starting
Motor Starting Methods
 Wye-Delta Starting