In Words How Does Starting Of Induction Motor Cause Voltage Dip?
Posted 24 January 2011 - 01:34 AM
Posted 24 January 2011 - 07:37 AM
When we start induction motor via DOL starter from steady state condition, it draws 600-800% current for a moment. If motor is large and the power distribution system (transformer, cables from traffo to distribution board, bus bars) is weak, then voltage dip problem occurs. Only one way to remove this voltage dip is to install VFD or soft starter to accelearte the motor. other way is to use Star Delta starter which also reduces the starting current by the factor of 1/1.73.
Posted 05 March 2011 - 11:13 AM
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