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

[boB at midnitesolar.com]

You don't want to drive for hours and hours to do something that might=20
not fix the problem.

Without knowing exactly what is happening, I would bring a spare Classic=20
and also a new breaker
which I think I heard we were sending you....

If the Classic is plugged into the internet, there is the possibility of=20
monitoring it to see what is
going on just before the breaker trips.   I would just bring another one=20
in this case if you have one...
Otherwise, call our support and see if there is something they can do to=20
help in this regard.

Strange things do happen in this industry !  Troubleshooting isn't so=20
bad as long as you don't have
drive or take a helicopter a long ways just to find that the unit is=20
turned off.

boB



On 10/29/2015 9:55 AM, Brian Teitelbaum wrote:
>
> Daniel,
>
> Very strange problem.
>
> While I agree that you should try replacing the 100A breaker, I doubt=20
> that it=E2=80=99s the problem. Why would a breaker trip at low amperage i=
n the=20
> morning, but not trip at noon when the amperage is higher?
>
> At early morning turn-on, the voltage might be too high, but high=20
> voltage is not going to trip a breaker. Current trips a breaker, not=20
> voltage.
>
> My guess is that something is going on inside the Classic controller.=20
> Larry=E2=80=99s =E2=80=9Cwild guess=E2=80=9D might be on the mark. Do you=
 have another Classic=20
> to swap out with?
>
> Brian Teitelbaum
>
> AEE Solar
>
> *From:*RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org=20
> <mailto:re-wrenches-bounces at lists.re-wrenches.org>] *On Behalf Of=20
> *Daniel Tittmann
> *Sent:* Wednesday, October 28, 2015 3:05 PM
> *To:* RE-wrenches
> *Subject:* Re: [RE-wrenches] Classic 150 100 amp utput breaker=20
> tripping?????
>
> An update on this issue:
>
> On my initial visit to diagnose this problem I changed the AGS=20
> settings higher volt start and % state of charge start.  The report=20
> from the client is that this has fixed the AGS issue.  So now I am=20
> just dealing with the 100 amp breaker tripping.
>
> The trip time from the client is when the sun hits the panels and once=20
> reset for the day it will not trip until the next morning. What could=20
> cause this?
>
> You are all right that the first step it changing out that breaker=20
> that will be the first on the list when I am back on site.  I hope=20
> that is the only issue because as usual this system is 2 Hrs from the=20
> 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=20
> <mailto:maclewis1 at gmail.com>> wrote:
>
> Hi Daniel,
>
> Do you know what the error is on the AGS? What are the start set=20
> points that you have? Jay could be on to something if the battery=20
> voltage is collapsing before the generator can start, the cc current=20
> could be high. Do you know specifically what time of day the breaker=20
> is tripping?
>
> I'd check the Midnite logs and consider starting the generator=20
> sooner.  Is there large voltage swings (this could indicate bad=20
> battery or large load)? Make sure the wire is cleaned and torqued=20
> properly onto that breaker.
>
> How big is the battery bank and what is the tilt and azimuth of the=20
> panels?
>
> On Oct 26, 2015 11:05 PM, "Jay" <jay.peltz at gmail.com=20
> <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=20
> faster than the AGS can start, and the caps in the classic are dumping=20
> into the super low battery voltage. If this is happening in the AM,=20
> guessing with enough light to get the CC alive
>
> If there is a trimetric, you can measure the lowest voltage which=20
> should give you some good info. Super low volts might mean a bad=20
> battery or too big a load or both.
>
> But I don't believe it's the other way around that the classic is=20
> 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=20
> <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)
>
>     _______________________________________________
>     List sponsored by Redwood Alliance
>

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