Here's a link to the specs on the 620.  It's showing 200-240 vac
required, which makes sense because it's a 1.8 kva box.

Larry Bolhuis wrote:
> I'm quite sure the 620 will be unhappy with 120V. 'The Book' on those
> systems says 200 to 240V 50 or 60hz. There is a UPS integrated into the
> PDU for that system (from Deltec) and I suspect that won't even light
> off at 110V. As to single .vs. 3 phase I'm quite certain it will run on
> 3 phase though technically you will be running on 2 out of the three
> phases. Some UPSs will not even start in that mode as they detect 'input
> phase rotation but I don't think the deltec units cared.. This is where
> the two legs are out of phase which they certainly are (on purpose!)
> with 3 phase.
> I guess I'd plug it into 110V and see what it does (or doesn't) do.
> - Larry
> Tom Jedrzejewicz @ San Pedro wrote:
>>I have an older 620 at a backup facility, and the older UPS there is on it's 
>>last legs.  The UPS is a 208V, and the AS/400 have a 208V power cord.  If 
>>memory serves, the 620 actually has an auto-selecting input power supply, and 
>>I can use a 120V UPS instead.
>>Can any of you confirm if that is the case?

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