Yes,
No Transformers, Single inverter.
Another question, looking at the Fronius 10.1 and 11.4-3, no battery backup of
course, they both list 208v in the sizing tool. I need to look at a manual, but
I'm not sure if I would need Delta, Wye, ..........
Thanks everyone!
----- Original Message -----
From: Rebekah Hren
To: al...@positiveenergysolar.com ; RE-wrenches
Sent: Monday, February 15, 2010 5:34 PM
Subject: Re: [RE-wrenches] 3 Phase Grid Tie with Battery Backup
Hi,
Does the utility mean by "match" that they don't want the inverter output
transformed in any way?
Could you not just use one 120V inverter? I've connected single 120 volt
inverters (albeit not outback but I don't see why not) to a 120/208 wye without
problems. You have to make sure the wires are sized correctly (solar pro had a
recent article on unbalanced 3 phase wire sizing). This of course limits your
backed up loads to 120V (w/out a transformer).
Rebekah Hren
North Carolina
------------------------------------------------------------------------------
From: Allan Sindelar <al...@positiveenergysolar.com>
To: RE-wrenches <re-wrenches@lists.re-wrenches.org>
Sent: Mon, February 15, 2010 6:51:12 PM
Subject: Re: [RE-wrenches] 3 Phase Grid Tie with Battery Backup
Yes you would. I don't believe there is a single inverter that meets the
utility's wishes.
Allan Sindelar
al...@positiveenergysolar.com
NABCEP Certified Photovoltaic Installer
EE98J Journeyman Electrician
Positive Energy, Inc.
3201 Calle Marie
Santa Fe, New Mexico 87507
505 424-1112
www.positiveenergysolar.com
All Solar Inc. Jeremy Rodriguez wrote:
Thanks Darryl,
Allen, would you have to use 3 Sunny Islands? one for each phase?
The Utility wants a single inverter.
Jeremy
----- Original Message ----- From: "Darryl Thayer" <daryl_so...@yahoo.com>
To: "RE-wrenches" <re-wrenches@lists.re-wrenches.org>
Sent: Monday, February 15, 2010 3:49 PM
Subject: Re: [RE-wrenches] 3 Phase Grid Tie with Battery Backup
I do not know what is going on at Outback, but unless they reduced the
product offering, they have the capability. I have such a system.
Use 3 of their 120 volt single phase inverters connected 3-phase WYE
(120/208) 3 phase. Each inverter is only a single phase, and you connect each
inverter to the neutral and one phase, you program one to be the Master, and
the others to be slaves on phase B and Phase C. When you lose the grid, the
Master inverter starts its sine wave and it generates the usual 60 Hz square
wave on the Outback Bus and the following slave units delays the start of their
sin waves by the appropriate 120 degrees to generate 3 phases. Each inverter
picks up and makes 60 hz 3 phase.
One thing, besure to get a rotation meter and check that you are generating
3-phase the same rotation as the grid. Else you will have big problems. (motors
will reverse and you may fry the OB transfer relay)
Next time you call outback ask a tech if you can slave the GVFX to make 3
phase,
--- On Mon, 2/15/10, All Solar Inc. Jeremy Rodriguez <allso...@scswifi.net>
wrote:
From: All Solar Inc. Jeremy Rodriguez <allso...@scswifi.net>
Subject: Re: [RE-wrenches] 3 Phase Grid Tie with Battery Backup
To: starpowe...@juno.com, "RE-wrenches"
<re-wrenches@lists.re-wrenches.org>
Date: Monday, February 15, 2010, 4:14 PM
Jeff,
That was my first choice, but I was told by Outback
that they do not offer
a 120/208 inverter(s). I have not set up a three
phase system yet, so bare
with me please. I was going to contact SMA next.
Jeremy
----- Original Message ----- From: "Jeff Oldham" <starpowe...@juno.com>
To: <al...@positiveenergysolar.com>;
<re-wrenches@lists.re-wrenches.org>
Sent: Monday, February 15, 2010 3:03 PM
Subject: Re: [RE-wrenches] 3 Phase Grid Tie with Battery
Backup
> You can also do it w/Outback up to 10.8kW
>
>>From the Solar, Wind and Hydro powered office of
Jeff Oldham/Regenerative
>>SOLutions
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