[RE-wrenches] Any thoughts on this approach to adding battery backup to an existing grid tie system will be appreciated.

[Peter Giroux]

Ken

  We have had terrific success with AC Coupling. Yes there are some differences from Dc Coupled systems but if built properly, customer is willing to learn how to use it and maintain it and you put the correct relays in to shut off the string inverters if battery voltage gets to high, great.

  If you have a customer that refuses to exercise the system, not check the batteries if they are fla's and overloads it when the power goes down then not so cool. We have customers that power shave with it, have had backup power for days until the power came back on as they monitored the loads and were judicious about use. Ray is right in the sense the customer needs to learn how to use the system or they can royally screw it up ( yes we have had two do this, one learned the other not ).

  The Radians have been great work horses for this application, sadly as Ray mentioned Outback has moved away from it as a primary solution. 

peter giroux
ASAE
Atlanta
  ----- Original Message ----- 
  From: Ken Schaal 
  To: RE-wrenches ; Ken Schaal 
  Sent: Wednesday, September 12, 2018 8:11 PM
  Subject: [RE-wrenches] Any thoughts on this approach to adding battery backup to an existing grid tie system will be appreciated.


  https://www.youtube.com/watch?v=eyhkIfS5Z-Q


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