[RE-wrenches] 208 3 phase Off Grid Inverter

[Ray Walters]

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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