August
Have used both SMA and OutBack inverters for this application. One
challenge with the smaller generators is getting a true 60 hertz, they
fluctuate. The Sunny Boy can be programmed to operate at a lower hertz range if
SMA will share the "secret code ". Recently did a Outback system and the
customer had a Propane fired Briggs and Stratton gen set, two wire start, works
great. I understand why you want to use the matching SMA's.
Have fun
peter
----- Original Message -----
From: August Goers
To: RE-wrenches
Sent: Thursday, June 15, 2017 12:02 PM
Subject: [RE-wrenches] Generator choice for Sunny Island
Hi Wrenches, especially those of you who work on off-grid projects,
We have an upcoming off-grid project where we will be powering a storage
container with electronics in it. The loads are mostly 120 volt but there is a
240 volt heat pump that might occasionally run. We’re AC coupling the Sunny
Island with a Sunny Boy PV inverter. So, we’ll be installing a Outback PSX-240
autoformer to bump the Sunny Island’s output from 120 to 240 volt.
We need to select a generator for backup. We need a two-wire electric start
(in order to be controlled by the Sunny Island) and preferably a generator that
is okay just running 120 volt loads since the Sunny Islands input is only 120
volt. Something in the 3 kVA -7 kVA range should be fine.
Does anyone have experience or ideas about what kind of two-wire start
generator we might select?
Thanks,
August
Luminalt
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