400hp slipring motor has been short circuited and connected to the 315kw variable frequency drive. The vfd has run continuously for 2 days without any problem.After a supply break the vfd couldnot resume but indicating a message of impedence short.
slip ring motors are one in which the rotor is connected to the slip ring directly in which the slip ring also connected with the shaft so that it rotates with the rotor simultaneously..
Yes a slip ring motor is there. There is a slip ring and a brush in the motor to add external resistance to the motor inorder to be able to control its speed.
The slip ring induction motors are usually used in the application requiring the low starting current or the high starting torque.
slip ring, synchronous, and squirrel cage induction motors....
To limit the starting current in slip ring induction motors.
To calculate the resistance for a slip ring motor, there is an equation that must be solved. This is Torque = S/R. S is the slip of the motor and R is the resistance of the motor.
slip ring induction moters is used due to its high starting torq
larger synchronous motors start with a squirrel cage and run when dc is applied thru the slip rings small motors can have magnets in the rotor these can accelerate from rest to synchronous speed in a few seconds
ring is dirty or brushes arent seated
DOL(Direct Online starting) Star Delta starting Auto transformer starting Above methods are for squirrel cage induction motor Rotor resistance starting is used for wound rotor or slip ring induction motor
According to types ofrotors....Induction motors are classified into two types. They are1.sqirrel guage induction motor2.slip ring induction motor/...........
A slip ring motor contains a slip ring, which is a mechanical device that transmits power and electrical signals from a stationary to a rotating structure. They are commonly found in engines used in cable reels, wind turbines, packaging machinery and radio telescopes.