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[ElectriciansForums.net] An electric motor can operate at 230V?

Single Phase Power Supply can be used to operate a three phase motor in this two possible ways:

(i) The motor connection shall be in delta and connected as per drawing above with a capacitor.

(ii) Using a VSD with single phase input and three phase output.
 
Would need to correctly size the capacitor. Also motors running at other than their designed voltages will have problems with current load. IIRC there was something in the states in the 70s when they lowered supply voltages to try and reduce demand which caused a load of problems with motors burning out.

Remember one site which had a crude home-made 1-3ph converter with a load of capacitors, inductances and a pilot motor. Took 20A on startup then you had to switch on a low power demand like a bench drill to get the phases (very) roughly lined up before putting on a heavier load like a reciprocating saw. Blew the incoming fuse more than once but finally got them to get a decent 3ph in to site.
 

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