[RE-wrenches] Classic 150 100 amp utput breaker tripping?????

Wed Oct 28 15:45:40 PDT 2015

Bizarre, Daniel. I can not imagine that the breaker will open with the tiny PV current available at first light then handles full current all day without a problem. 

Wild guess here... could it be the Classic transition from open circuit voltage to operation is creating a momentary short that trips the breaker? To be sure, put a new 100A breaker in and wait for sunup.  

Larry Crutcher
Starlight Solar Power Systems

On Oct 28, 2015, at 3:04 PM, Daniel Tittmann <daniel at greenwired.com> wrote:

An update on this issue:
On my initial visit to diagnose this problem I changed the AGS settings higher volt start and % state of charge start.  The report from the client is that this has fixed the AGS issue.  So now I am just dealing with the 100 amp breaker tripping.  

The trip time from the client is when the sun hits the panels and once reset for the day it will not trip until the next morning. What could cause this? 

You are all right that the first step it changing out that breaker that will be the first on the list when I am back on site.  I hope that is the only issue because as usual this system is 2 Hrs from the shop with no cell or internet coverage.
Thanks for your input.
Cheers-
Daniel

Daniel Tittmann 
CTO
Greenwired
www.greenwired.com <http://www.greenwired.com/>
daniel at greenwired.com <mailto:daniel at greenwired.com>
707-923-2001 (office)
707-206-5088 (Cell)

On Mon, Oct 26, 2015 at 10:25 PM, Mac Lewis <maclewis1 at gmail.com <mailto:maclewis1 at gmail.com>> wrote:
Hi Daniel,

Do you know what the error is on the AGS? What are the start set points that you have? Jay could be on to something if the battery voltage is collapsing before the generator can start, the cc current could be high. Do you know specifically what time of day the breaker is tripping?

I'd check the Midnite logs and consider starting the generator sooner.  Is there large voltage swings (this could indicate bad battery or large load)? Make sure the wire is cleaned and torqued properly onto that breaker.

How big is the battery bank and what is the tilt and azimuth of the panels?

On Oct 26, 2015 11:05 PM, "Jay" <jay.peltz at gmail.com <mailto:jay.peltz at gmail.com>> wrote:
Hi Daniel

Is this a new classic with OCP? Or maybe they don't have it anymore?

What it sure sounds like like is a big load on the batteries, it hits faster than the AGS can start, and the caps in the classic are dumping into the super low battery voltage. If this is happening in the AM, guessing with enough light to get the CC alive 

If there is a trimetric, you can measure the lowest voltage which should give you some good info. Super low volts might mean a bad battery or too big a load or both. 

But I don't believe it's the other way around that the classic is causing any issues with the AGS/inverter

You could always try another CC and see what happens

Jay

Peltz power

On Oct 26, 2015, at 6:30 PM, Daniel Tittmann <daniel at greenwired.com <mailto:daniel at greenwired.com>> wrote:

> Hive mind-
> hoping you all can help me solve this mystery issue.
> 
> System:
> Magnum double panel with Parallel stacked 2x4448 pae inverters.
> Classic 150 charge controller wired with an NMEPV 50 (din rail) and NMEPV100 
> 18 - 245 watt solar modules (6x3). (not over powered)
> 
> Issue:
> every morning the 100 amp din rail breaker is tripping.  from what I can gather simultaneously the magnum RTR shows the AGS go into error.  Re set the breaker and the solar works fine for the rest of the day.  
> 
> Not 100% sure the AGS has worked (under normal operation) at all other than at commissioning and recent testing. 
> 
> Of course on site i cant get it to fail.
> 
> Tested the AGS by setting start voltage to 48.2 vdc and put the system under load....... voltage drops and generator turned on with no pv-> Batt breaker issue. 
> 
> last visit, chasing one theory, I re routed the battery + from the mnpv100 directly to the battery  + terminal as opposed to the battery + bus bar in the inverter panel still didn't solve the problem.
> 
> I cant figure out if it the classic causing the issue or if it is the inverters and the AGS.
> 
> Any input would be appreciated.
> Thanks
> Daniel
> 
> Daniel Tittmann 
> CTO
> Greenwired
> www.greenwired.com <http://www.greenwired.com/>
> daniel at greenwired.com <mailto:daniel at greenwired.com>
> 707-923-2001 <tel:707-923-2001> (office)
> 707-206-5088 <tel:707-206-5088> (Cell)

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