Slip Ring Motor Means More Torque

we have discussed everything on squirrel cage induction motors including its dis-advantages.

These motors are usually started with full line voltage applied across its terminals. As these motors have external RESISTANCE connected to its rotor circuit, the value of starting current is adjusted or kept minimum, by increasing the resistance of the rotor circuit. This external resistance can be assumed to be a form of rheostat, connected in star, thus kept at maximum when the motor starts and gradually cut-out as the motor gathers speed. that increasing the rotor resistance, not only reduces the rotor current, but the stator current too. This implies that the starting current of the motor is reduced when an external resistance is added in the rotor circuit. Thus because of this, the starting torque is increased due to the improvement in power factor

A slip ring is an electromechanical device that allows the transmission of power and electrical signals from a stationary to a rotating structure. A slip ring can be used in any electromechanical system that requires rotation while transmitting power or signals.

Also maintain easily just monitoring the carbon brush and cleaning issue .

Uses Industry :

Heavily Press - Mechanical Press , Elevator, Hoist

Basically i am related forging industry thats why mention Mechanical press