Johno,
If the single phase voltage is 220VAC, the 3 phase voltage is more than likely something like 380VAC star.
The question I would ask is, what sort of a machine is this?
Where voltage could be critical to controls and what-not.
One other thing, it is up to the installing electrician to verify that their systems will agree with the machine in question before it is installed.
There are a lot of ex-Aussie and NZ electricians over there in Dubai, that went there for the BIG money.
