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

[boB at midnitesolar.com]

I might take a clamp on ammeter and check the Classic's battery side 
current.
Then maybe turn ON the generator and see what happens to the current
on that line.

boB



On 11/6/2015 1:49 PM, Daniel Tittmann wrote:
> there is a MNSPD 300 AC and a MNSPD 300 DC.  are wired into the system.
>
> this is a new system.  Has been happening since commissioning.
> it is possible that the generator is charging during those morning 
> hours as there are likely morning loads, coffee pot, but not always as 
> the customer just went on vacation and the breaker tripped while he 
> was gone.
>
> On my first return visit I re routed the controller battery + from the 
> battery + buss bar to the battery + on the battery bank itself as this 
> had solved an similar issue in the past.
>
> So for tomorrow's visit I am planning on taking a new breaker and a 
> new controller.  Is there anything else that I should replace?
>
> 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 Thu, Oct 29, 2015 at 4:19 PM, boB at midnitesolar.com 
> <mailto:boB at midnitesolar.com> <boB at midnitesolar.com 
> <mailto:boB at midnitesolar.com>> wrote:
>
>
>     Larry, because these MPPT CC's are bi-directional (for
>     efficiencies' sake), they can convert a large current
>     at the battery side to a smaller current at the PV side if not
>     adjusted right.  Normally this is just taken
>     care of and reduced to a bare minimum by the controller watching
>     the voltages and currents carefully.
>     It is technically possible though for things to not work exactly
>     correctly.  I am not saying that this is
>     for sure happening, but it is possible.   The ramping up in
>     battery voltage from the chargers should
>     be plenty slow enough for this not to be a problem but I am wildly
>     speculating that this could happen
>     and cannot rule it out.  There may of course be something else
>     completely different happening here
>     though.
>
>     If CBI breakers are being used, these are known to be extremely
>     fast at tripping when overloaded.
>
>     Also, what, if any SPDs are connected to the system ?
>
>     boB
>
>
>     On 10/29/2015 2:45 PM, Starlight Solar Power Systems wrote:
>>     After the Magnum Inverter/charger samples incoming AC power, they
>>     have a slight delay before starting the charger. Then, they ramp
>>     up current slowly.
>>
>>     Even so, how will any current from any other source pass through
>>     the breaker unless the Classic is presenting a load? I suppose
>>     something else could be wired through the breaker but I’m
>>     guessing Daniel would have looked at that.
>>
>
>     <<<Curious Larry's PICTURE GOES HERE>>>
>
>>     Curious Larry
>>
>>
>>     On Oct 29, 2015, at 1:06 PM, boB at midnitesolar.com
>>     <mailto:boB at midnitesolar.com> wrote:
>>
>>
>>     ...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…
>>
>>     boB
>>
>>
>>
>
>
>     ____
>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20151106/70ced3ff/attachment-0002.html>