Panel volts and amps output
I recently finished adding 2 more panels to my system and today was the first sunny day we have had. I wanted to check everthing to make sure the new panels were working properly after the final install. The amps from the panels started out around 7amps. The voltage however was about 61 volts. When I had all 4 panels temporarily connected last week before the clouds and rain set in it was reading around 80 volts (clear, but much colder then). Thinking something was wrong, I disconnected and checked each panel. They all showed 20.x volts. Since they were not connected to anything I assume that was the Voc.? Here is where I'm sure someone can explain the "Why" or assure me all is well I hope. In bulk the controller was at one point putting out about 33 amps to the batteries. As it transitioned to absorb and the amps to the batteries began to decrease, the voltage reading on the controller (confirmed with a dmm at the solar input terminals) rose to about 73 volts. If I turned on a box fan, the output amps from the controller went up and the reading for the panel voltage went down. I guess I am mistaken to think that the voltage from the panels would peak rather quickly in good sun and the amps would go up and down over the course of the day assuming full sun all day and the voltage not vary much. Correct, incorrect?
4-Kyocera 135 watt in series, 4-215ah 6 volt GC2 batteries in series, Exeltech 1100 watt/24 volt inverter, Tristar 45 MPPT controller, Iota 24 volt/25 amp charger.
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