I keep looking at telecom power stuff on ebay and google, really not finding much. May very well end up having to design my own system. They make this stuff hard to buy.
I may look at solar inverters for the inverter part though. May possibly be able to use a charge controller instead of rectifiers but not sure how those behave with AC being fed directly in. (rectified to DC of course) Some do support high voltage for higher PV voltages so it could work...