[RE-wrenches] 208 3 phase Off Grid Inverter

[Brian Mehalic]

Wait a sec, "volume purchasing issues" doesn't equal "discontinued"!
 Sounds more like they're selling all they can make to a big customer!


Brian Mehalic
NABCEP Certified Solar PV Installation Professional(tm) R031508-59
IREC ISPQ Certified Affiliated Instructor/PV US-0132

PV Curriculum Developer and Instructor
Solar Energy International
http://www.solarenergy.org


On Tue, Mar 25, 2014 at 12:41 AM, <william at millersolar.com> wrote:

> Ray:
>
> Sunny Islands being discontinued:  Did not know that!
>
> XW inverters:  Not impressed and have had mixed results.  I have resolved
> most issues but dealt with glitchy, overcomplicated software and firmware.
> Some are reluctant to connect to generators and earlier firmware would not
> sell efficiently.  Also the BOS cabinet is way too small, but aren't they
> all?
>
> Wm
>
>
> -----Original Message-----
> From: re-wrenches-bounces at lists.re-wrenches.org
> [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Ray
> Walters
> Sent: Monday, March 24, 2014 8:35 PM
> To: RE-wrenches
> Subject: Re: [RE-wrenches] 208 3 phase Off Grid Inverter
>
> Hi William;
>
> I was told by two different major distributors  a few months ago that the
> Sunny Islands were not going to be available in the US anymore
> because of some volume purchasing issues.   Has that been sorted out?
>
> The XW  I have not installed, since I've had poor results with other recent
> Schneider products.  No where could I find in the spec sheet any mention of
> 3 phase/ 208 capability, but I found some mention of 3 phase in the manual
> for the XW Config software. (XW 6048 Spec sheet just says single phase, so
> is this a newer capability? or just in the config software) Do you have
> specs  or a wiring diagram for the XW in 208/ 3 phase? For instance, what
> is
> the L to L (single phase) power rating at 208 vac?
> Are the XWs decent? I've heard some positive feed back from other wrenches.
>
> R.Ray Walters
> CTO, Solarray, Inc
> Nabcep Certified PV Installer,
> Licensed Master Electrician
> Solar Design Engineer
> 303 505-8760
>
> On 3/24/2014 8:58 PM, William Miller wrote:
> > Ray
> >
> > Sunny Island or XW.
> >
> > Wm
> >
> > -----Original Message-----
> > From: re-wrenches-bounces at lists.re-wrenches.org
> > [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Ray
> > Walters
> > Sent: Monday, March 24, 2014 7:44 PM
> > To: RE-wrenches
> > Subject: [RE-wrenches] 208 3 phase Off Grid Inverter
> >
> > Hi All;
> >
> > I'm exploring options for an off grid project with an existing 30 Kw
> > Kohler wired for 208 vac 3 phase.  The generator runs some 8 hp air
> > compressors, so rewiring it is not an option.  We're primarily
> > interested in reducing gen run time from the current situation: 14 hrs/
> day.
> > So far, only the Outback VFX inverters seem capable of being wired in
> > 208, 3 phase, but according to the manual they can only be stacked 1
> > inverter per leg. This limits the system to only 3 inverters total, or
> > 10.8 kW.  I would like expandability beyond this.
> > 1) are there any other inverters available that I'm over looking?
> > 2) Should I consider a transformer to convert from 208 vac/3phase to
> > 240 vac/ singe phase?
> >
> > We're not going to even try to run the compressors, just the other
> > single phase loads, mostly 120 vac, but we have a couple of small air
> > conditioners, that are currently running on 208 single phase.  I
> > believe they would run fine on 240 vac, as they have a name plate rating
> at 230 vac.
> > 3) We may possibly run 2 separate 3 inverter stacks and only tie
> > together at the battery, but otherwise they would not be connected.
> > This seems inefficient, and would require some load balancing of the
> various inverters.
> >
> > All help and discussion is greatly appreciated as always,
> >
> > --
> > R.Ray Walters
> > CTO, Solarray, Inc
> > Nabcep Certified PV Installer,
> > Licensed Master Electrician
> > Solar Design Engineer
> > 303 505-8760
> >
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