This is probably not the breaker at fault. Could be, but just doesn't
seem like the only thing
I would suspect.
Do you know if the generator might be turning on and charging the
battery through the
inverters at this time in the morning ? Since you were talking about
the AGS it makes
me wonder... That would be a good clue.
There is a possibility that a simple (you know how "simple" goes
sometimes !) adjustment that
can be done on the Classic if it turns out to be, say, a surge in
battery voltage from the generator
starting up and causing a reverse current through the battery
terminals... The inherent circuit design of
higher efficiency converters can cause this. Send me / us an email if
you would like to try that.
This is done through a special communications mode using the MNGP display.
Also, is this a new system or has it been running for a while and just
now seeing this problem ?
boB
On 10/29/2015 11:13 AM, b...@midnitesolar.com wrote:
You don't want to drive for hours and hours to do something that might
not fix the problem.
Without knowing exactly what is happening, I would bring a spare
Classic 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 monitoring it to see what is
going on just before the breaker trips. I would just bring another
one in this case if you have one...
Otherwise, call our support and see if there is something they can do
to help in this regard.
Strange things do happen in this industry ! Troubleshooting isn't so
bad as long as you don't have
drive or take a helicopter a long ways just to find that the unit is
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
that it’s the problem. Why would a breaker trip at low amperage in
the morning, but not trip at noon when the amperage is higher?
At early morning turn-on, the voltage might be too high, but high
voltage is not going to trip a breaker. Current trips a breaker, not
voltage.
My guess is that something is going on inside the Classic controller.
Larry’s “wild guess” might be on the mark. Do you have another
Classic to swap out with?
Brian Teitelbaum
AEE Solar
*From:*RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org
<mailto:re-wrenches-boun...@lists.re-wrenches.org>] *On Behalf Of
*Daniel Tittmann
*Sent:* Wednesday, October 28, 2015 3:05 PM
*To:* RE-wrenches
*Subject:* Re: [RE-wrenches] Classic 150 100 amp utput breaker
tripping?????
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>
dan...@greenwired.com <mailto:dan...@greenwired.com>
707-923-2001 (office)
707-206-5088 (Cell)
On Mon, Oct 26, 2015 at 10:25 PM, Mac Lewis <maclew...@gmail.com
<mailto:maclew...@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.pe...@gmail.com
<mailto:jay.pe...@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 <dan...@greenwired.com
<mailto:dan...@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
dan...@greenwired.com
707-923-2001 <tel:707-923-2001> (office)
707-206-5088 <tel:707-206-5088> (Cell)
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