The low voltage alarm on both my inverter and charge controller are triggered whenever I try to use anything high powered (around 750w or 1000w)
It is a 2000w off-grid inverter, that until now has handled these loads regularly without a problem. The battery is full, 13.4v, I have gone over all the connections and there is nothing loose, I have tried a different battery (a slightly smaller one) only to get the same result. I have even reconnected it with new battery cables, straight from the battery to the inverter and I tried that with 2 different batteries. I checked fuses, I looked inside the inverter, nothing appeared burnt.
During the surge the voltage goes as low as 9.8 volts then is constant between 11.8v and 12.2v before sounding the alarm about 5-10 seconds after switching it on.
Interestingly the voltage on the charge controller screen reads 12.2v battery voltage under no load when it reads 13.4v at the battery terminals and the terminals of the charge controller. Tests where done on the inverter with the charge controller switched off and it made no difference to the inverter.
And interestingly when the inverter was switched on without the load plugged in the voltage actually rose to 14.3v! My inverter draws about 20w continuously.
Please let me know what you think!
Big thanks,
Nathan
It is a 2000w off-grid inverter, that until now has handled these loads regularly without a problem. The battery is full, 13.4v, I have gone over all the connections and there is nothing loose, I have tried a different battery (a slightly smaller one) only to get the same result. I have even reconnected it with new battery cables, straight from the battery to the inverter and I tried that with 2 different batteries. I checked fuses, I looked inside the inverter, nothing appeared burnt.
During the surge the voltage goes as low as 9.8 volts then is constant between 11.8v and 12.2v before sounding the alarm about 5-10 seconds after switching it on.
Interestingly the voltage on the charge controller screen reads 12.2v battery voltage under no load when it reads 13.4v at the battery terminals and the terminals of the charge controller. Tests where done on the inverter with the charge controller switched off and it made no difference to the inverter.
And interestingly when the inverter was switched on without the load plugged in the voltage actually rose to 14.3v! My inverter draws about 20w continuously.
Please let me know what you think!
Big thanks,
Nathan