TF series synchronous motor can be driven by motor,steamengine,internal combustion engine or other prime movers, it is rated power factor is 0.8(lagging).
T series synchronours motors are applied to drive fan, water pump, motor-generator set and other universal machines, their rated voltage is 6000v or 10000v as the customer request, the rated frequency is 50hz, the rated power factor is 0.9(leading), the motor is allowed to be started directly at full voltage, the rotor circuit should be series connected with a starting resistor with ten times resistance of fieldwinding resistance during starting.