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Implementation of single phasing protection with stardelta starter

  • Unique Paper ID: 143401
  • Volume: 2
  • Issue: 11
  • PageNo: 258-261
  • Abstract:
  • Most of the induction motor are started directly online, but when large rated motors are started that causes disturbance of voltage on the supply lines due to large starting current. To limit the starting current large induction motors are started at reduced voltage and then have full supply voltage reconnected when they run upto near rated speed. Most of the time three phase supply is suffer with the problem of single phasing in such a condition if induction motor is continuously running during single phasing fault in such a condition motor get heated and chances of burning of winding .For the protection of motor in such a condition we have implemented single phasing protection with automatic star delta starter. Automatic star delta starter provides one by square root three reduced starting current in starting condition. After that starter contacts are changes from star to delta induction motor reaches when 80% of it’s rated speed. In running condition if any one of the phase failure in three phase supply then motor will be protected from the damage and stop the motor safely.
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Cite This Article

  • ISSN: 2349-6002
  • Volume: 2
  • Issue: 11
  • PageNo: 258-261

Implementation of single phasing protection with stardelta starter

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