Inverter Duty Transformer |
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Inverter Duty Transformer |
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  Mar 8 2008, 11:15 AM
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#1
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 Member  Group: Full Member Posts: 165 Joined: 3-September 04 Member No.: 861  |
Hi !!, We have a project to make a VFD based panel for a 2080 volts 60hz 250 hp submersible pump ( 300 metres deep). The vendor is proposing a 380 volts VFD of rated capacity and a inverter duty Autotransformer to stepup the output of drive to 2080 volts. I find it a bit odd, to put a stepup Auto-transformer in between the drive and the motor. I recommended a 2080 volts rated VSd and to put the transformer on the line side. The available supply is 380 volts 60 hz. Is it Ok to put a Auto-transformer at the output of drive? Any thoughts? |
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Mar 8 2008, 06:49 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 Chaterpilar
Yes, a motor is just a rotating transformer and this is done frequently. The only issue is if the drive was a sensorless vector, it may get confused. You are best to operate in V/F mode. I would work on the suppliers recommendations to ensure that there are no incompatibility issues. 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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Mar 9 2008, 03:18 AM
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#3
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Member Group: Full Member Posts: 165 Joined: 3-September 04 Member No.: 861 |
Thanks Marke for your input.
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Mar 21 2008, 06:42 AM
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#4
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Junior Member Group: Full Member Posts: 7 Joined: 19-March 08 Member No.: 4,399 |
If at all you decide to install a transformer , Take care of its K rating for sufficient harmonics withstand capablity.
Regards |
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Lo-Fi Version | Time is now: 21st November 2008 - 07:58 PM |
