Turning two phase mains into three phase

[Squaredy]

4 minutes ago, wills-mill said:

I'm out of my depth on the two phase/split phase farm malarkey, but I'm fairly certain that rotary convertors do create true 3 phase, while the static convertors do not.

I'm running a pretty ancient 15hp rotary for the workshop and it's a fabulous thing that makes magic from a very marginal 50A 240v supply. It's so much nicer than pratting about with starting gennies and pouring diesel up your arm occasionally in my book.

Whether you can apply a soft start module or 3 phase to 3 phase inverter drive to the extent that you're massively lessening the start up loads on the convertor is something for the commercial gurus to work out. It's one of those things where you want one single firm supplying both the convertor and the start device- if you get the components separately and it gives any grief, then both suppliers will just blame the other for your woes....

Keep us informed  

Thank you for your input. 

 

As I look into it more it is pretty obvious the startup load is a very big issue.  You don't run the sawmill at full speed for hours like you might a re-saw or a planer, it will be fired up for each cut and then stopped as the sawhead is returned.  So it may be fired up a couple of hundred times a day.

 

So my challenge is getting either the supplier of the inverter to agree it will cope, or the supplier of the sawmill to agree it will be OK.  I think it probably will, but I can't spend £10,000 on kit just hoping it will be OK!

[wills-mill]

18 minutes ago, Squaredy said:

Thank you for your input. 

 

As I look into it more it is pretty obvious the startup load is a very big issue.  You don't run the sawmill at full speed for hours like you might a re-saw or a planer, it will be fired up for each cut and then stopped as the sawhead is returned.  So it may be fired up a couple of hundred times a day.

 

So my challenge is getting either the supplier of the inverter to agree it will cope, or the supplier of the sawmill to agree it will be OK.  I think it probably will, but I can't spend £10,000 on kit just hoping it will be OK!

Yeah, it's certainly a scary financial jump for grey boxes of mystery. I dipped in and out for years at different variations for attempting to run a Stenner 36 resaw (15hp 11kw) from the workshop supply, but it was so tight and I never was confident enough in it working to start spending.

Mizers aren't a dreadful start up load, but they are a significant enough start up load!