Gridtek 10 islanding with outback? [RE-wrenches]

[David Katz]

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Hi Geoff,
This should work fine if the output from the Xantrex 10kw inverter is 
connected to a sub panel that is also connected to the output of a pair 
of outback VFX3648s. In the event that the wind output is greater than 
6kw or so, and there is not enough load in the house to us up the 
remainder of the power, the AC voltage will start to rise and the 
Xantrex/Bergy inverter will turn off and wait 5 minutes.
Connect the AC input of the Outback inverter pair to a 240 volt breaker 
in the main panel. This will connect the main panel to the sub panel as 
long as the utility is functioning and it will open the connection when 
the utility goes down. All of the critical loads you want to back up 
should be connected to the sub panel.
David
David Katz
President, AEE Solar
formerly Alternative Energy Engineering
1155 Redway Drive - Box 339
Redway, CA 95560 USA
(707) 825-1200
(707) 825-1202
email: david at aeesolar.com
web: www.aeesolar.com


Geoff Greenfield wrote:

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>I remember and will delve into the archive to look for the appropriate past
>discussion of setting up grid tie inverters with bat-verter standby
>systems...  but-
>
>Has anyone done or heard about doing this with a bergey/Xantrex Gridtek 10
>wind inverter?  (240 VAC output - typically a double 70 amp breaker
>backfeeding main panel.) I wonder about sizing the inverters... would
>probably come up with a dump load scheme should the wind production exceed
>loads (probably).
>
>For a brighter energy future,
>
>Geoff Greenfield
>NABCEP Certified Energy Practitioner
>
>THIRD SUN SOLAR & WIND POWER Ltd.
>340 West State Street
>Athens, OH 45701
>
>www.third-sun.com
>(740) 597-3111
>
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