GoHz Inc., founded in 2009, registered at Michigan Chicago USA, is a manufacturers-based online shop in Static Frequency Converters, Power Inverters, VFDs, Soft Starters etc. We are capable to provide experienced technical solutions for our customers. If the motor is designed for 230 VAC 50Hz, then 230 VAC P-P is no different, and should therefore work properly. Regardless, the single phase motor, if it rated for 230 VAC 50 Hz, can operate from one phase of a three phase 230v 50Hz power source - HOWEVER - there is a danger that touching the case may cause an electric shock, should the insulation not be sufficient to protect the person (who is likely grounded) from the ungrounded 230V P-P power source. It is ok to use a single phase 230v 50Hz induction motor on phase-phase 230v ac with body grounding to eliminate the risk of electric shock. But, the frequency of supply is equally important. Mostly 230v, 50 Hzphase-phase power supplies are 60Hz based, while 400v, phase-phase power supplies are 50HZ based. Probably, Your motor is designed for 230V/50Hz and you intend to use it on 230V/60HZ. More on http://www.gohz.com