My setup is:
450W x 10 panels in series
Voc = 49.6V, Vmp = 41.0V
Iiih, the voc of the panels is dangerously approaching the Vin max of your SCCI have an MPP Solar 5048GK. Max Solar Voltage or Voc is 500VDC.
Despite the opening, I don't think they actually have a 10s system. They wrote this a bit further down:Iiih, the voc of the panels is dangerously approaching the Vin max of your SCC
If you catch a cold very sunny day, you may be above the tolerances.
If Y where you I would rather use a 5S2P configuration, or a SCC that accepts 600V Vin.
When they currently have is a 5s system with 5 panels doing nothing / not connected. That fits with the actual production they are seeing.New info. Installer confirmed that panels are connected in 2 parallel strings of 5.
View attachment 100745
I'm talking about this.
I've checked the manual and it doesn't list the setting for the battery PV charging current, only mains. You need to check on the inverted itself or in the manual that came with it.So I'm seeing Max 60A, Default 30A. Not sure what this means. I know Max is max, but what is Default?
More info. I've only seen max 30A battery charging when charging from PV. But when charging from line, I've seen battery charging go up to around 50A.
From the manual it looks like the PV charging current cannot be set.02 - Maximum charging current (Max. charging current = utility charging current + solar charging current)
11 - Utility charging current
So try setting #11 to 2A, #2 to 80A and see what happen.
Bingo.It turns out that one string in my 5s2p setup was not functioning.
One string is not connected. Get the connections checked.
they currently have is a 5s system with 5 panels doing nothing / not connected. That fits with the actual production they are seeing.
Agree. It's essential for DIYers. Thanks again.Glad to hear you found the cause of the problem, this is where DC Clamp-on Amp meter is good for troubleshooting the issue.