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>
dan...@greenwired.com <mailto:dan...@greenwired.com>
707-923-2001 (office)
707-206-5088 (Cell)
On Thu, Oct 29, 2015 at 4:19 PM, b...@midnitesolar.com
<mailto:b...@midnitesolar.com> <b...@midnitesolar.com
<mailto:b...@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, b...@midnitesolar.com
<mailto:b...@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
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