Starting Of Induction Motor |
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Starting Of Induction Motor |
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  May 20 2008, 08:14 PM
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#1
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Junior Member  Group: Full Member Posts: 6 Joined: 19-May 08 Member No.: 4,570  |
Dear sir
I want your support about the min rating of induction motor can starting dirct online technqiue osama |
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May 21 2008, 07:12 PM
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#2
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Posting Freak Group: Moderator Posts: 2,099 Joined: 24-April 02 From: Christchurch, New Zealand Member No.: 1 |
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 -------------------- Mark Empson administrator
Skype Contact = markempson | phone +64 274 363 067 LMPForum | LMP Tech Warehouse | L M Photonics Ltd | Empson family | Advanced Motor Control Ltd | LMP Software | Mark Empson Website |
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May 24 2008, 07:08 AM
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#3
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Junior Member Group: Full Member Posts: 6 Joined: 19-May 08 Member No.: 4,570 |
QUOTE (marke @ May 21 2008, 06:12 PM)  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 |
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May 24 2008, 07:26 AM
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#4
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Posting Freak Group: Moderator Posts: 2,099 Joined: 24-April 02 From: Christchurch, New Zealand Member No.: 1 |
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. -------------------- Mark Empson administrator
Skype Contact = markempson | phone +64 274 363 067 LMPForum | LMP Tech Warehouse | L M Photonics Ltd | Empson family | Advanced Motor Control Ltd | LMP Software | Mark Empson Website |
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Lo-Fi Version | Time is now: 2nd December 2008 - 11:14 PM |
