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<div class="moz-cite-prefix">Its Mexico, so its 60 Hz, 3 phase 120/
208. I had originally considered the Radians for this project,
until I went down and determined the actual voltage.<br>
<pre class="moz-signature" cols="72">R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760</pre>
On 3/26/2014 7:31 AM, Phil Undercuffler wrote:<br>
</div>
<blockquote
cite="mid:CAPLQxE+fP02LJuC6v8-=VU4hroHEYsY-2e_Wqj2Syae8RZ4myw@mail.gmail.com"
type="cite">You mentioned this is out of the country -- is it 230v
line to neutral, or 120/208? OutBack's export Radian can do three
phase, up to 72kW continuous.
<div><br>
</div>
<div>HTH,<br>
<div><br>
</div>
<div>Phil<br>
<div><br>
</div>
<div><br>
</div>
<div><br>
<br>
On Tuesday, March 25, 2014, Ray Walters <<a
moz-do-not-send="true" href="mailto:ray@solarray.com">ray@solarray.com</a>>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
OK everyone is steering me towards the Sunny Island. I
can probably justify the inverter cost difference to the
customer, then I found the SMA Multicluster Box for the
SI. It seems like a glorified AC Combiner and transfer
switch box, but it retails for over $20K! Yikes.<br>
Do we have to use that for a 3 phase install, or are there
much lower cost alternatives. This is out of the country
and does not need to be NEC2014 compliant. (maybe NEC
1956 compliant would be about in keeping with the rest of
the wiring.......) This would be a budget buster for
sure.<br>
<br>
R.Ray Walters<br>
CTO, Solarray, Inc<br>
Nabcep Certified PV Installer,<br>
Licensed Master Electrician<br>
Solar Design Engineer<br>
303 505-8760<br>
<br>
On 3/25/2014 4:21 PM, Kevin Pegg wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi Ray,<br>
<br>
I have several 3-phase off-grid
inverter/battery/generator systems out there.<br>
<br>
- SMA Sunny Island is the best. Can scale to at least
180 kW, maybe more. Reliable & very solid. I have
several sites going over 2 years without a single second
of power outage.<br>
- Xantrex XW. It can work in a 3-ph config, but it's not
as stable system. We have taken to preventatively
rebooting the systems every 4 months and that helps a
lot - at least the outage can be planned and on our
terms.<br>
- Outback has had so many power quality nightmares I
won't go there anymore.<br>
- I believe Magnum has a 3-ph option but haven't
installed one yet.<br>
<br>
SMA inverters are more expensive. And they work very
well. They also have a very good battery charging
algorithm and integral gen start control.<br>
<br>
Kevin<br>
<br>
-----Original Message-----<br>
From: <a moz-do-not-send="true">re-wrenches-bounces@lists.re-wrenches.org</a><br>
[mailto:<a moz-do-not-send="true">re-wrenches-bounces@lists.re-wrenches.org</a>]On
Behalf Of Ray<br>
Walters<br>
Sent: March 24, 2014 6:44 PM<br>
To: RE-wrenches<br>
Subject: [RE-wrenches] 208 3 phase Off Grid Inverter<br>
<br>
<br>
Hi All;<br>
<br>
I'm exploring options for an off grid project with an
existing 30 Kw<br>
Kohler wired for 208 vac 3 phase. The generator runs
some 8 hp air<br>
compressors, so rewiring it is not an option. We're
primarily<br>
interested in reducing gen run time from the current
situation: 14 hrs/ day.<br>
So far, only the Outback VFX inverters seem capable of
being wired in<br>
208, 3 phase, but according to the manual they can only
be stacked 1<br>
inverter per leg. This limits the system to only 3
inverters total, or<br>
10.8 kW. I would like expandability beyond this.<br>
1) are there any other inverters available that I'm over
looking?<br>
2) Should I consider a transformer to convert from 208
vac/3phase to 240<br>
vac/ singe phase?<br>
<br>
We're not going to even try to run the compressors, just
the other<br>
single phase loads, mostly 120 vac, but we have a couple
of small air<br>
conditioners, that are currently running on 208 single
phase. I believe<br>
they would run fine on 240 vac, as they have a name
plate rating at 230 vac.<br>
3) We may possibly run 2 separate 3 inverter stacks and
only tie<br>
together at the battery, but otherwise they would not be
connected. This<br>
seems inefficient, and would require some load balancing
of the various<br>
inverters.<br>
<br>
All help and discussion is greatly appreciated as
always,<br>
<br>
</blockquote>
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