Frequency sensitive rheostat manually start reversing circuit

  
Circuit shown in Figure 3-166. It uses the button control. When start forward, press SB], the motor rotor string frequency sensitive people rheostat RF operation. When the moto
Frequency sensitive rheostat manually start reversing circuit - schematic

r speed increased to close to the rated speed, short press the button SB3, RF out of operation. Reverse start, press SB2 to startup process forward and start the same process.




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