Slip Ring Rotor Resistance Calculation

But in case of slip ring motors the rotor resistance is increased by the addition of external resistance.

Slip ring rotor resistance calculation.

Only for you 32 662 views. We saw some of the applications of this motor. Calculation table for slip ring induction motor used for crane hoisting application. Overhead crane slip ring motor resistance calculation duration.

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. Rotor resistance starting slip ring induction motor srim. Slip ring i m provides high starting torque. The value of starting current is adjusted by adding up external resistance to its rotor circuit.

Prity 24 february 2014 at 03 02. The rotor circuit resistance has significant impact on starting torque the speed at which the breakdown torque occurs and the slip during the normal running operation. The stator is the same as is used with a standard squirrel cage motor. This gives the three phase motor having three sets of resistors each set having resistors about 6 to 8 connected in.

Starting of slip ring induction motors. Rotor resistance starter in three phase induction motor electrical academy. Slip ring or wound rotor motors. The slip ring or wound rotor motor is an induction machine where the rotor comprises a set of coils that are terminated in sliprings to which external impedances can be connected.

The resistance value of 9 times higher than of a slip ring rotor resistance is connected externally to experience maximum starting torque. We can able to add external resistance through slip ring in the rotor circuit. The rotor had a external resistance which is connected to it. 7 14 shows how the motor torque speed curve would change if rotor resistance is increased and all other parameters in the motor equivalent circuit stay the same.

So at the starting because of the high rotor resistance we get low starting current which helps to start motor without any damage. I am a student of electrical enginnering it helped me alot in my electrical paper of chapter slip ring. These motors are usually started with full line voltage applied across its terminals.