Barbar0ssa
New Member
- Joined
- Mar 3, 2021
- Messages
- 80
I pulled all 4 input strings and measured them. 94v, 94v, 30v, 3v. So 2 strings are worse than useless at the moment and I probably need to get back on the roof to debug them. I guess that is good news because that means there is some hope for improvement in the future. I left only the 2 performing strings connected.
My latitude is 41.079639. And I think my calculator for my sub-optimal angle and direction (~45, pointed 265 degrees West) mislead me so my best case scenario is probably not as good as I had hoped.
The MPPT range of my SCC is supposed to be 60v - 120v, but soon after connecting the strings (closing breaker), the voltage drops all the way to 54v or 55v on the meter. Before I close the breaker, the panel output is 94v and the solar input terminals on the SCC are battery voltage (53-54v).When the breaker closes, I watch the voltage slowly work it's way down. Is this the expected behavior for MPPT?
My latitude is 41.079639. And I think my calculator for my sub-optimal angle and direction (~45, pointed 265 degrees West) mislead me so my best case scenario is probably not as good as I had hoped.
The MPPT range of my SCC is supposed to be 60v - 120v, but soon after connecting the strings (closing breaker), the voltage drops all the way to 54v or 55v on the meter. Before I close the breaker, the panel output is 94v and the solar input terminals on the SCC are battery voltage (53-54v).When the breaker closes, I watch the voltage slowly work it's way down. Is this the expected behavior for MPPT?
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