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Renewable Energy Q&A / Re: Max winding temp
« Last post by Pete on April 24, 2022, 02:01:08 am »Hi LH, looks right. The nameplate does say 460 volt for delta.
Your connection looks right for Delta.
With Delta connection each phase winding has 460 volts across it.
Talk to the manufacturers and see what they say about trying it in Star.
In a Star connection you would have with the 400 volts your controller can supply a phase voltage of 230 volts.
The current would be down too so you may not get enough power but at least it would not run as hot.
See what they say, as it seems the VFD is not suited to the motor running in Delta.
good luck
Pete
Your connection looks right for Delta.
With Delta connection each phase winding has 460 volts across it.
Talk to the manufacturers and see what they say about trying it in Star.
In a Star connection you would have with the 400 volts your controller can supply a phase voltage of 230 volts.
The current would be down too so you may not get enough power but at least it would not run as hot.
See what they say, as it seems the VFD is not suited to the motor running in Delta.
good luck
Pete