On grid w/battery (was non wrenches) [RE-wrenches]

[Mangelsdorf, Marco]

Joel and others,

At the risk of sounding like a syncophant salesman for our friends at
Advanced Energy, Inc. in NH, their Multi-Mode battery-based 5 kW
inverter was designed to do exactly what the SW can't do: max power
point track.  Their inverter also uses no grid power at night to keep
the batteries floated.  I've been closely monitoring a number of
Multi-Modes in the field here in the tropics and the reports have been
very positive in terms of performance.

On another point: what's the latest with Xantrex getting UL listing for
the SW 4.2 with the GTI?   It's my understanding that the SW/GTI has
been approved by CTL in oh Canada but has yet to get official UL
approval.  Does anybody know anything otherwise?  Has anyone had any
difficulty getting their new SW/GTI assembly approved by the AHJ or
local utility?

aloha,
marco
ProVision Technologies, Inc.
Hilo, Hawai'i
www.provisiontechnologies.com

>From Joel Davidson:

The point is our battery bank has just sat there 35,000 hours keeping us
off the
PV array max power point and buying a float charge at night from the
grid for
less than 24 hours of relatively non-essential backup power.

Of course, I'd have to change inverters unless Xantrex figures out how
to get the SW4048 to max power point track when on the grid and function
as a
UPS in stand-alone mode during grid outages.

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