[RE-wrenches] Wrong title on my inquiry ... Charge Controller Question!

[Ray Walters]

Charge controller failure = system failure = customer sitting in the 
dark off grid.
I would only use proven, UL listed equipment.  Those are ridiculous 
current ratings.  You would need to wire that with 500 MCM cable.
If you look, you'll notice reputable brands like Midnite Solar, Outback, 
and Blue Sky Energy, do not exceed 100 amps.  You just stack more 
controllers for bigger systems.  This has numerous advantages, including 
redundnancy, so a single controller failure does not = system failure.  
It also means various sub arrays have independent MPPT.  Another 
advantage is that many of these controllers can run at higher array 
voltages, so fewer parallel strings.
I don't even think that controller has MPPT, so you would have to find 
12 or 24 volt modules; regular 60 cell modules would not work.
Finally, if you haven't done off grid or battery based systems before, 
you should get someone on board with some long term experience.

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

On 4/22/2014 1:27 PM, Karl Jaeger wrote:
>
> *From:*Karl Jaeger
> *Sent:* Tuesday, April 22, 2014 2:28 PM
> *To:* RE-wrenches at lists.re-wrenches.org
> *Subject:* RE: Fault Current
>
> Greetings Wrenches,
>
> We're considering a new charge controller for an upcoming project that 
> offers a wide range of operation and customization. Has anyone had 
> experience with this product? General specs and link below:
>
> Sollatek - Solar Control Centre/ Solar Charge Controller
>
> 12/24/or 48V
>
> 10-100V Voltage Range
>
> 90-960A Max Charge Current
>
> http://www.sollatek.com/product/solarcontrolcentre/
>
> Thank you in advance!
>
> Karl Jaeger
>
> LightWave Solar
>
>
>
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