Three-phase motor △ low-speed operation circuit

Published:2012/9/10 1:31:00 Author:Ecco | Keyword: Three-phase motor , low-speed operation | From:SeekIC

Sometimes the motor is required to run at low speed or without borrowing mechanical gearbox, the effect can be realized by the circuit shown as the figure. From the figure, three-phase windings are connected VD1~VD3 respectively, then people can press normally open contact KM2, ST1, then KM1l pulls in, VD1, VD2 VD3 are connected to winding, motor M start running at low speed. And then pressing ST2, KM2 pulls in, VD1, VD2 VD3 are shorted, M runs at full speed under rated voltage.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Basic_Circuit/Three_phase_motor_△_low_speed_operation_circuit.html

Print this Page | Comments | Reading(3)