[RE-wrenches] Generator automatic disconnect

Larry Crutcher, Starlight Solar Power Systems larry at starlightsolar.com
Tue Oct 1 10:09:43 PDT 2013


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> 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
NABCEP Certified PV Installation Professional
NABCEP Certified Technical Sales Professional
New Mexico EE98J Journeyman Electrician
Founder, Positive Energy, Inc.
A Certified B CorporationTM
3209 Richards Lane
Santa Fe, New Mexico 87507
505 424-1112 office 780-2738 cell
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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