AC coupling of off grid Outback inverters seems
to be a very good solution for having a generator
backup system while feeding the grid. The
generator won't have a problem synchronizing with
the off grid FX, and the grid tie inverter will
take care of the UL 1741 requirements. Of
course, transfer switches and protective relays
will be required. Depending on the grid tie
inverter used, this approach should be cost
effective compared to using the new Xantrex
equipment. Also, the Outback technical support is excellent.
Drake
At 11:03 AM 11/5/2008, you wrote:
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I should have also mentioned that the dump or
diversion control can be done via an AC load
with a relatively inexpensive AC solid-state
relay and AC loads such as AC baseboard or AC
electric water heater elements which are much
easier and less expensive than doing it with the
lower voltage / higher current DC relay and loads.
The OutBack FX series offers an AUX output
control mode for both AC and DC diversion which
has a fixed voltage level but has an adjustable
on time which can be set to zero for
applications using a solid-state relay.
Christopher
Drake Chamberlin
Athens Electric
OH License 44810
CO License 3773
740-448-7328
740-856-9648
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