[RE-wrenches] Generator choice for Sunny Island

[Peter Giroux]

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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