How To help with phase converter input wiring

[Stacy E. Apelt - Bladesmith]

Good deal.

 

[scott.livesey]

check the output voltage of your 3 legs. if the voltage difference between phases is +/- 5 volts or so, you can hook it up to a 3ph in VFD. you can sometimes find these on Ebay for dirt cheap. having a phase a little higher wont damage motor, but will cause some VFD's to fault

 

[Stacy E. Apelt - Bladesmith]

Funny, I was thinking the same thing ... make it a VFD power source. The VFD should offer more filtering. I have seen 3Ph to 3Ph VFDs go for $10 on ebay.

 

[Lieblad]

check the output voltage of your 3 legs. if the voltage difference between phases is +/- 5 volts or so, you can hook it up to a 3ph in VFD. you can sometimes find these on Ebay for dirt cheap. having a phase a little higher wont damage motor, but will cause some VFD's to fault

Would be better off just connecting singlephase to VFDs input.
If a particular 3Ø VFD displays an input voltage fault, place a jumper between the otherwise unused third phase terminal and either one of the live singlephase inputs.
Those VFDs only want to see correct voltage exists on all three inputs, but does not care about phasing otherwise.

Voltage is detected referenced to earth.
This does two things, monitors if has input voltage and determines if an earth connection exists.

 

[Stacy E. Apelt - Bladesmith]

I have read that before. I will have to try it one day. I have a few 3Ph to 3Ph VFDs somewhere.