Starting Of Induction Motor

[osama ali]

Dear sir

I want your support about the min rating of induction motor can starting dirct online technqiue

osama

 

 

 

[marke]

Hello osama

 

Welcome to the forum.

 

Can you be more specific about what you are asking? I am not sure what you are looking for.

 

Best regards,

Mark

[osama ali]

Hello osama

 

Welcome to the forum.

 

Can you be more specific about what you are asking? I am not sure what you are looking for.

 

Best regards,

Mark

hello mark

at what rating for motor i decide starting the motor direct online or using another starting method

Regards

osama

[marke]

Hello osama

 

It is more a function of the supply and the local regulations than any real "technical" issue with the motor.

 

The motor draws a high overload when you start it DOL, typically 6 - 8 times the rating of the motor. This high overload current can cause excessive voltage drop and this can be a good reason for using a reduced voltage starter.

 

In some areas, the local regulations require motors greater than a specified size to be reduced voltage started. It depends on the local authority and your supply impedance.

 

Best regards,

Mark.