Hello everyone,
I'm reluctant to make my first post here one in which I am begging for help, but, well, I can't quite figure out what is plaguing my off-grid system at the moment. Any help is very much appreciated! Running the generator so much is no fun.
**extreme PV voltage drop at charge controller, little to no current flowing into batteries
A few weeks ago I noticed my current problem:
-very low volts and amps flowing through the charge controller and into the battery bank
-PV voltage drops from the expected ~130V when circuit is completed between PV array and charge controller; PV voltage in the entire system fluctuates with the sun, but isn't much higher than battery voltage
Specs:
-northern and relatively remote location/climate, off grid permanent residence
-48V AGM, 510Ah, 24 x 2V cells
-325W Canadian Solar panels (CS6U, VOC 45.5V, ISC 9.34A) https://www.wholesalesolar.com/cms/c...31.1930006.pdf
-Panels wired in series, 3 per string
-Currently I have 15 panels combined into a single charge controller
-Charge controller Magnum PT-100
-Magnum 4400W inverter/charger; E-panel
The system had been working great since I set it up in the summer of 2019. I've slowly added more panels as the winter has progressed and the solar irradiance declined.
Battery bank charges well with generator, inverter seems to be operating normally, I think that I have now ruled out that the fault is within the charge controller (got a hold of another CC, different model, and have replicated the issue).
I've isolated different strings of panels and the problem persists.
Where does my problem lie?
I'm reluctant to make my first post here one in which I am begging for help, but, well, I can't quite figure out what is plaguing my off-grid system at the moment. Any help is very much appreciated! Running the generator so much is no fun.
**extreme PV voltage drop at charge controller, little to no current flowing into batteries
A few weeks ago I noticed my current problem:
-very low volts and amps flowing through the charge controller and into the battery bank
-PV voltage drops from the expected ~130V when circuit is completed between PV array and charge controller; PV voltage in the entire system fluctuates with the sun, but isn't much higher than battery voltage
Specs:
-northern and relatively remote location/climate, off grid permanent residence
-48V AGM, 510Ah, 24 x 2V cells
-325W Canadian Solar panels (CS6U, VOC 45.5V, ISC 9.34A) https://www.wholesalesolar.com/cms/c...31.1930006.pdf
-Panels wired in series, 3 per string
-Currently I have 15 panels combined into a single charge controller
-Charge controller Magnum PT-100
-Magnum 4400W inverter/charger; E-panel
The system had been working great since I set it up in the summer of 2019. I've slowly added more panels as the winter has progressed and the solar irradiance declined.
Battery bank charges well with generator, inverter seems to be operating normally, I think that I have now ruled out that the fault is within the charge controller (got a hold of another CC, different model, and have replicated the issue).
I've isolated different strings of panels and the problem persists.
Where does my problem lie?
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