[RE-wrenches] Three-phase off-grid

Gary Willett gary at icarussolarservices.com
Fri Oct 21 15:56:10 PDT 2011


Alan: Thanks for setting me straight about 3-phasing the Outback Radian 
- I was not aware they are limited to parallel single phase applications.

Regards,

Gary Willett


On 10/21/2011 15:29, Allan Sindelar wrote:
> Gary,
> I was surprised by this information, as I had presumed that both units 
> were for single-phase only. So I checked.
>
> Mary Raub in tech support at Outback told me that the Radian works 
> only in 120/240 single-phase, although they are stackable in parallel.
>
> Someone in Schneider tech support told me that the XW can be used in 
> three-phase, up to six units (36 kW). Setup instructions are in 
> Appendix D of the XW installation guide, found online at 
> http://www.global-download.schneider-electric.com/85257849002EB8CB/all/5CC689CC3CB7FD10852578BF005EA759/$File/xw-hybrid-inverter-charger_installation-guide%28975-0239-01-01_rev-e%29.pdf.
>
> Thanks, Allan
>
> *Allan Sindelar*
> _Allan at positiveenergysolar.com_ <mailto:Allan at positiveenergysolar.com>
> NABCEP Certified Photovoltaic Installer
> NABCEP Certified Technical Sales Professional
> New Mexico EE98J Journeyman Electrician
> *Positive Energy, Inc.*
> 3201 Calle Marie
> Santa Fe, New Mexico 87507
> *505 424-1112*
> _www.positiveenergysolar.com_ <http://www.positiveenergysolar.com/>
>
> On 10/21/2011 2:01 PM, Gary Willett wrote:
>> Allan:
>> Also, you might consider using six to nine Schneider/Xantrex XW6048 
>> inverters, or six to nine Outback Radian GS8048 inverters, in a 
>> 3-phase configuration, with a common battery bank.
>> Also, Schneider/Xantrex has an 80A 600V charge controller that may be 
>> advantageous depending on the distance from the PV arrays to the 
>> inverters.
>>
>> Regards,
>> Gary Willett, PE
>> Icarus-Engineering LLC
>>
>> Icarus Solar Services LLC
>>
>>
>> On 10/21/2011 10:17, Allan Sindelar wrote:
>>> Wrenches,
>>> We have been asked for a design for an off-grid system to reduce 
>>> generator runtime for a mountain resort. Initial projections 
>>> (consumption measurement results not yet available) suggest 15-20 kW 
>>> of PV and around 30 kW of inverter capacity. However, the generators 
>>> and existing wiring are three-phase 120/208.
>>>
>>> My assumption is that our only options are a set of six Sunny 
>>> Islands, or 9-12 Outback GVFX3648s. Are there any other options or 
>>> approaches that I'm missing?
>>>
>>> Thank you, Allan
>>> -- 
>>> *Allan Sindelar*
>>> _Allan at positiveenergysolar.com_ <mailto:Allan at positiveenergysolar.com>
>>> NABCEP Certified Photovoltaic Installer
>>> NABCEP Certified Technical Sales Professional
>>> New Mexico EE98J Journeyman Electrician
>>> *Positive Energy, Inc.*
>>> 3201 Calle Marie
>>> Santa Fe, New Mexico 87507
>>> *505 424-1112*
>>> _www.positiveenergysolar.com_ <http://www.positiveenergysolar.com/>
>>>
>>>
>
>
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