Induction Motor, Star/Delta starters |
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Induction Motor, Star/Delta starters |
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 Nov 13 2007, 08:07 AM
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#1
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Junior Member  Group: Full Member Posts: 8 Joined: 19-August 07 Member No.: 3,647  |
I have an induction motor 40kW Wye/Delta 380/220
Star/Delta starters I=P/(rt3.U.efficiency.cos) U= 380 or 220 ? Help me! |
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Nov 13 2007, 08:16 AM
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#2
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Posting Freak Group: Moderator Posts: 2,010 Joined: 24-April 02 From: Christchurch, New Zealand Member No.: 1 |
Hello thanhdd
This motor is designed to be star connected for 380 volt operation, or delta connected for 220 volt operation. Note, this is 220 volt three phase, not single phase. If you wish to use a star delta starter, then you can only do this if you are using 220 volt three phase. At 380 volt, you can use DOL, autotransformer, primary resistance or soft starter. Best regards, -------------------- 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 20 2008, 08:58 PM
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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 (thanhdd @ Nov 13 2007, 07:07 AM)  I have an induction motor 40kW Wye/Delta 380/220 Star/Delta starters I=P/(rt3.U.efficiency.cos) U= 380 or 220 ? Help me! Dear sir hello, if your power supply 3-ph 220 VAC you can using star delta technique to start your but as usual the power supplies 3-ph 380 VAC in this case you cann't use star/delta technique for your motor . the most common method used for these kind of motors is softstarter. best regads osama |
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