Three phase power control unit

Details Three phase power control unit Three phase power control unit

H - Electricity

02

J

323/31

H02J 3/12 (2006.01) G05F 1/14 (2006.01) H01F 29/02 (2006.01) H02P 13/06 (2006.01)

Patent

CA 1129497

THREE PHASE POWER CONTROL UNIT Abstract of the Disclosure A three phase voltage controller for controlling the voltage applied to a three phase load. The controller includes three autotransformers which have a plurality of output taps for stepping down the output voltage Contacts to the taps are selected for a high output voltage and a low output voltage with the contacts selected either manually or automatically, In the automatic mode, time delay is provided in switching from a high output voltage to a low output voltage, and a re-cycle timer is provided to re- cycle from a low voltage to the high voltage temporarily. Single phase control contactors are provided to remove vol- tage from one or more output lines for load shedding. Cir- cuit breakers are provided for removing the controller and for directly applying the input line voltage to the output line.

336270

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