I am running a 96 volt off grid system. I have just finished wiring the battery bank in series for 96 volts with 2 parallel strings. I connected the solar charge controllers to the battery banks positive and negative ends on opposite side. I have two MPPT solar charge controllers rated for 80 amps each, but I am only going to connect around 3500 watts of solar to each charge controller. I connected my first 4 panel PV array which is in series for a voltage of 163 volts and each panel is 300 watts.
The problem I am having is when I turn on the breaker in the solar pv combiner box which then goes to the MPPT charge controller. The charge controller reads 0 volts. However, when I test with my multimeter the positive and negative ends from PV combiner box to solar charge controller it reads 163 volts. When I turn off the breaker in the PV combiner box the voltage on the solar charge controller reads 8 volts. I have no idea why it shows 0 and why it won't charge. Maybe I don't have the settings correct in the charge controller. Maybe the charge/float voltage needs to be higher?
Attached are photos to show you what I am talking about. Any help or advice is appreciated.
The problem I am having is when I turn on the breaker in the solar pv combiner box which then goes to the MPPT charge controller. The charge controller reads 0 volts. However, when I test with my multimeter the positive and negative ends from PV combiner box to solar charge controller it reads 163 volts. When I turn off the breaker in the PV combiner box the voltage on the solar charge controller reads 8 volts. I have no idea why it shows 0 and why it won't charge. Maybe I don't have the settings correct in the charge controller. Maybe the charge/float voltage needs to be higher?
Attached are photos to show you what I am talking about. Any help or advice is appreciated.
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