Thread: VFD question
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Old January 13th, 2021, 01:26 AM   #12

lfe is offline
Join Date: Jun 2007
Location: Barcelona
Posts: 595
Originally Posted by GaryS View Post
A few things to think about on this
Star is 2 winding in series to a center point each winding is still 400v
2 400v windings in series “ Star” would be a phase to phase line voltage of 800v
Not in Europe

In the US there are usually motors on which the windings can be connected in pairs in parallel or in series and the voltages at which they can operate have a factor of 2 between them.

However in Europe I have never seen that type of connection and only star/delta connection with a factor of 1.73 is usually supported.

400V/690V voltages are the most common for motors in Europe, normally connected in delta, as the voltage currently used in most industrial installations is triphase 400V 50Hz
Suppanel HMI

Last edited by lfe; January 13th, 2021 at 01:32 AM.
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