Might be as simple as your AC circuit is too small for the whole load.
The key questions are (1) What is the load of your equipment?, and (2)
What is the bulk charge load on your controller?
Add those two together to understand what the total load should be.
bp
<part15sbs{at}gmail{dot}com>
On 5/28/2017 9:19 AM, Josh Baird wrote:
I have a site with a TSP+BCM 48V combo. Last night, something caused
the AC breaker to trip, putting the site on battery. We didn't see
the alert until about 12 hours later. At this point, the batteries
were down to ~42V. When our guy arrived on site, he reset the AC
breaker, and AC power was restored. Immediately, the battery breaker
(breaker between positive side of the batteries and the BCM) tripped.
Now, each time that we reset the battery breaker, it causes the AC
breaker to immediately trip. At this point, the site is up on AC with
no battery. Any ideas what would be causing this? Do you think the
batteries are causing the BCM to draw too much current? Could one (or
more) of the batteries be dead/bad? The site *did* run successfully
on battery for nearly 12 hours.
Josh
