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

[boB at midnitesolar.com]

Daniel...

This one is kind of unusual...  Especially tripping only in the morning.

Temperature ?  Something moving or shaking the breaker box ?

Have you tried changing the circuit breaker ?

What is the approximate maximum current output from the Classic in the 
morning ?

  You can access recent power info before the trip in the LOGS menu or 
the main status menu by hitting
the STATUS button a few times...  Four hits I think, until you see the 
graph of power vs. time show up.
There are other items logged and can be seen by pressing the UP 
button.   Logging is done around every
5 or 10 minutes and the most recent log will be on the right side of the 
graph.
To move the cursor to the right to get this value, press the RIGHT arrow 
key.  LEFT key moves it
backward in time and right to more recent time.    If the MNGP (display) 
time and date is set correctly,
the logs should present the actual logging time correctly.

The daily logs won't save the maximum power data because the Classic 
will reset before that info is saved
when the breaker tripped.  That usually happens at midnight.

   I know you don't usually get the nameplate rating out of an array 
but  18*245W adds
up to 4400 watts or so and would be around 90+ amps at 48V if it should ever
put out that much power.

This list is going to have some great ideas but if we can also help, 
give us a ring at
360-403-7207.  OR, at any time day or night, you can start a support 
ticket that
immediately gets sent to all of the support people by going to...

http://www.midnitesolar.com/help

The ticket method is kinda cool because it gets people thinking about 
the problem
as soon as they see it.

boB Gudgel



On 10/26/2015 6:30 PM, Daniel Tittmann 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 (office)
> 707-206-5088 (Cell)
>

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