[RE-wrenches] Load Management vs Multiple Inverters and OutBack Radian vs Flexware systems

Starlight Solar Power Systems larry at starlightsolar.com
Thu Dec 15 10:35:55 PST 2016


Dave,

In the RV business, load controllers are very common. Intellitec makes a simple, low cost load shedding unit. It may have an application for your grid system. 

See http://www.intellitec.com/assets/pdf/1453-intellitec-pdf-template-53-00714-000.pdf



On Dec 15, 2016, at 10:08 AM, Dave Palumbo <palumbo131m at gmail.com> wrote:

Wrenchers,
 
I am involved in designing an off grid system that will need  multiple inverters (probably OutBack). My experience over the years has been limited to no more than 8kW's of inverter on a big system (for me). The load profile is not completed yet, but it is looking like this may require more power if all of the loads were to be on/surge at the same time. The client wants things to run as seamlessly as practical and has the means to pay for a nice system. 
·         Are automatic load management devices worth looking into? I have no experience with them except for one of my off griders (early adopter type) had one put in about 15 years ago on his system and I think it worked OK but it seemed like a lot of money and work to install and it takes up some space. More technical stuff to deal with. 
·         How fool proof is it and is it worth messing with? Vs. adding more inverter wattage?
 
·         With OutBack these days what are the Pros and Cons comparing a Radian system vs a Flexware 1000 system? 
·         Why does the Radian line have different ratings per unit of a 48VDC inverter? Isn't the Radian two vented 48V inverters in a big box? 
·         The regular OB VFXR3648's  have lower continuous power and surge ratings and lower battery charging amps when compared to a Radian. Two OB VFR3648's @ 7,200VA continuous vs Radian @ 8,000VA; 10.8kVA surge on the 2 VFX's together vs 12kVA on the Radian; also 90ADC vs 115ADC battery charging respectively. 
 
Thanks for your time,
Dave
 
David Palumbo 
Independent Power LLC
462 Solar Way Drive
Hyde Park, VT 05655
802-371-8678 cell
802-888-4917 home
 
 
 


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