[RE-wrenches] AC coupling

[Drake Chamberlin]

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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