[RE-wrenches - array strings for Sun-tie inverters] [RE-wrenches]

[Bob-O Schultze, Electron Connection]

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Yo Jeff,
If your Trace distributor didn't provide you with cut sheets on the 
ST2500, shame on them. If they did and you didn't read it, 
well.....shame on you.
The ST is not the only product to have a 48VDC input. The GC-1000 
does as well. Since there are maybe four or five inverter 
manufacturers total that marked to the US, you can hardly say that 
"everyone else is in the 100 to 400 volt D.C. range." While I agree 
that higher input voltages may be a good idea IF they translate to 
higher efficiencies, putting 400VDC on the roof of a residence in a 
system designed for 25 years is something to think about twice.
Best, Bob-O

>We have installed other grid interactive inverters designed for high voltage
>strings which allows installing lots of modules at lower currents and small
>wire sizes.  We just received our first 2500 watt Trace Sun-Tie inverter for
>a demo project and found out (after the fact!) that it is based on 48 volt
>strings only.
>
>We have read many threads in recent postings blasting this inverter, but
>most of these were related to low efficiency or over-heating. Were there
>reasons Trace based this unit on low array voltage when everyone else is in
>the 100 to 400 volt D.C. range.  What's the deal?
>
>Jeff Yago
>Dunimis Technology Inc.

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