Erika, I think the takeaway here is that the Island only has that surge
power capacity on the protected load side- you wouldn't see this surge
on the utility side. SMA should be able to provide this sort of
documentation for you.
On 2012/10/18 9:38, Erika Weliczko wrote:
Greetings all.
I recently received this back regarding an interconnection application
proposing a Sunny Island 6048 and a SB7000:
“we have to rate the system at the max output of the inverters, and
since that battery backup has an inverter that can export 11kW, (albeit
for 3 seconds) I have to review the system for a total of 18kW.”
This is a new one on me. I might argue that the SB7000 is upstream of
the SI6048 and really the SI6048 is the point of interconnection, so the
SB7000 is irrelevant. And 3 seconds is not really continuous operation.
It seems that batteryless inverters show continuous output ratings,
though I know there are some that specify a larger than expected OCP for
various reasons, but that is not what the utility cares about.
Any insights here?
Thanks,
Erika
REpower SOLUTIONS
www.repowersolutions.com
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