Wednesday, December 4, 2019

Motor Starting Methods

Motor Starting Methods

  • Direct on line starting method
  • Star Delta starting method
  • Rotor resistance starting method
  • Variable speed drive starting method

Star Delta starting method

This method is used more often in the factory. If it is necessary to limit the starting current of the motor due to power limitations. It is possible to use Star-Delta. From there begins a connected winding star to connect the motor to the delta. The starting current used in this method reduces the starting current to about 30% of the direct inline start value, and the starting torque is reduced to about 25% of the value using the direct inline start method. Good torque / current performance, relatively inexpensive starter are the advantages of this method. The disadvantages are low starting torque, no adjustment, power failure during connection change and 6 required end motors.

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