Outback with Sunnyboy [RE-wrenches]

[Jonathan Hill]

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>Jonathan Hill wrote:
>>  Will the entire array output continue to charge the batteries through
>>  the OutBack's even if it exceeds the OutBack's rating?
>
>Only until the OutBack's get too hot and shut off. If AC loads are
>running at the same time it will reduce this from occurring. 
>
>All of the systems we have done have had about even amounts of grid-tie
>and battery based inverters - i.e. if there was 8 kW of SunnyBoy then
>there was at least 8 kW of OutBack inverters...
>
>There are ways to configure a system to prevent overloading the
>OutBack's if they had to be less - basically you can have a dump load
>turn on the burn up the excess power on the AC side of the system -
>between the batteryless gridtie and the OutBacks. 
>
>Dave Katz's comment about providing a way to shut off the batteryless
>grid-tie inverter when the battery is full was correct - although I
>prefer to use a dump load system which diverts the excess power to a
>useful purpose instead.  This has varried from using some old C40
>controllers to multiple solid-state relays.  The SSR give the option of
>dumping the excess to either AC or DC loads. 
>
>Christopher Freitas
>OutBack Power Systems, Inc.
>cfreitas @ outbackpower.com 
>www.outbackpower.com
>Arlington WA USA
>Tel 360 435 6030 
>
Chris-
If that's the case, why not just use the Outbacks and skip the Sunnyboys?
Jon
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