[RE-wrenches] Generator automatic disconnect

[Ray Walters]

If they HAD to have the wee Generac, you could have it feed only one 
inverter, and the other 3 Magnums could stay in invert mode.  I have 
large systems where I'm not using the charger off every inverter.

R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760

On 10/1/2013 11:09 AM, Larry Crutcher, Starlight Solar Power Systems wrote:
> You are right. Normally I would not even consider a generator of this 
> size. My constant thinking outside the box took me down this rabbit 
> trail. I'm back.
>
> Thank you,
>
> Larry
>
>
>
>
> On Oct 1, 2013, at 8:24 AM, Allan Sindelar 
> <allan at positiveenergysolar.com <mailto:allan at positiveenergysolar.com>> 
> wrote:
>
> Agreed. We're all offering ways to work as well as possible with the 
> wrong generator choice for this application.
> Allan
>
> *Allan Sindelar*
> _Allan at positiveenergysolar.com_ <mailto:Allan at positiveenergysolar.com>
> NABCEP Certified PV Installation Professional
> NABCEP Certified Technical Sales Professional
> New Mexico EE98J Journeyman Electrician
> Founder, *Positive Energy, Inc.*
>
> A Certified B Corporation^TM
> 3209 Richards Lane
> Santa Fe, New Mexico 87507
> *505 424-1112 office 780-2738 cell*
> _www.positiveenergysolar.com_ <http://www.positiveenergysolar.com/>
>
>
> On 10/1/2013 9:16 AM, Ray Walters wrote:
>> Sounds like they need a 20 Kw Kohler. Hot Tub in the future?  They'll 
>> love their Kohler.  The Generac is just way too small to even 
>> consider IMHO.
>>
>> R.Ray Walters
>> CTO, Solarray, Inc
>> Nabcep Certified PV Installer,
>> Licensed Master Electrician
>> Solar Design Engineer
>> 303 505-8760
>>
>> On 10/1/2013 8:11 AM, Larry Crutcher, Starlight Solar Power Systems 
>> wrote:
>>> William, Chris, Ray, Allan, et al.
>>>
>>> Gen support would be ideal but this inverter setup will be a quad 
>>> pack of Magnum 4024PAE (120/240 split; 16kW). Their New MSH inverter 
>>> is single phase only and can not be stacked.
>>>
>>> While disabling load(s) is the antithesis of the desired outcome, 
>>> I'll review this possibility further.
>>>
>>> Using a separate charger could work but it would need to be about 
>>> 200A @ 32V which would add quite a bit of cost and be hard to sell 
>>> since the Magnum inverters already have 4 high quality charges 
>>> included.
>>>
>>> A larger generator might be necessary if the customer won't agree to 
>>> load shedding. Their plans are to expand the loads over time, 
>>> operate a business, install a hot tube and more. Of course I have 
>>> pushed the concept that conservation is paramount. The PV array and 
>>> inverters are being oversized now for the future growth.
>>>
>>> My ideal solution...Since Magnum inverters monitor the AC input and 
>>> control it based on quality of power, it seems to me that there 
>>> could be a setting for disconnecting the AC input if loads exceed a 
>>> setpoint. Change in control software would be great.
>>> Thank you,
>>> Larry
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