Slip Ring Motor Starter Diagram Pdf
Slip ring induction motor connection diagram why slip rings are used in an induction motor. Higher is the inertia higher has to be the accelerating torque otherwise the start will be very long and the motor can be damaged by the heating.
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Induction motors have been ruling the industrial world for many decades.
Slip ring motor starter diagram pdf. Mechanical design of slip ring motor s r s h 132 to 315 m. The aim behind the development of the project is to limit the current at starting of motor and to develop the high starting torque. The material pairing used for the slip ring contact system is normally bronze metal graphite.
The brush holders are double box type brush holders. 5 2 starting of slip ring motors these can be started by adopting either a current limiting method or a definite time control method. There are different methods of starting of 3 phase slip ring induction motor.
For an induction motor to produce torque at least some difference should be there between stator field speed and rotor speed. Three phase slip ring rotor starter control power diagrams 3 phase slip ring rotor starter control power diagrams slip ring rotor power and control. Slip is defined as the difference between the flux speed and the rotor speed.
The slip ring induction motor has two distinctly separate parts one is the stator and other is the rotor. Motor c1 c2 a1 a2 b1 ly b2 dol v 3 φ ly auto transformer starter motor c1 c2 a1 a2 b1 b2 a v. Sl no apparatus name apparatus type specification range makers name serial no.
A slip ring motor also requires a larger space for the motor and its controls. In the slip ring compartment of the housing at the d end sizes 132 to 315 m or in the end shield at the n end from size 315 mx. If the motor is started directly.
In order to start a slip ring motor the accelerating torque has to be sufficiently higher than the resisting torque. However we selected the rotor. A squirrel cage motor is thus preferred to a slip ring motor.
In the induction motors used in lift and hoists you will see a type of rotor called. The slip ring induction motor diagram is shown below. Speed control of three phase slip ring induction motor by rotor resistance control.
Up tp 93 off launching official electrical technology store shop now. Three phase motor control installation wiring diagrams. The frame voltage is the open circuit voltage when the rotor is not rotating and gives the measure of turns.
Check more diagrams here. The stator circuit is rated as same in the squirrel cage motor but the rotor is rated in frame voltage or short circuit current. Why using a starter for slip ring motors.
Gear slip rings external rotor resistances etc.
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