Hi, i have a problema with PV terminal. i checked continuity with a multimeter between terminal positive and negative of PV input, and it seems that there is no resistance between these two terminals. In the following table it can be seen that the input voltage pv drops to 0 after a high battery voltage of 68.12 V
Days ago |
Date |
Yield(Wh) |
Max. PV power(W) |
Max. PV voltage(V) |
Min. battery voltage(V) |
Max. battery voltage(V) |
Time in bulk(m) |
Time in absorption(m) |
Time in float(m) |
Last error |
2nd last error |
3rd last error |
4th last error |
0 |
1/16/23 |
0 |
0.00 |
0.00 |
53.02 |
61.25 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
1/15/23 |
0 |
0.00 |
0.00 |
53.02 |
53.05 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
2 |
1/14/23 |
0 |
0.00 |
0.00 |
53.07 |
53.09 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
3 |
1/13/23 |
0 |
0.00 |
0.05 |
52.90 |
53.12 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
4 |
1/12/2023 |
0 |
0.00 |
0.05 |
52.41 |
53.13 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
5 |
1/11/2023 |
0 |
0.00 |
0.05 |
52.91 |
53.12 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
6 |
1/10/2023 |
30 |
390.00 |
182.39 |
52.21 |
68.12 |
80 |
53 |
0 |
0 |
0 |
0 |
0 |
7 |
1/09/2023 |
0 |
4.00 |
192.80 |
2.04 |
57.06 |
211 |
140 |
0 |
0 |
0 |
0 |
0 |
8 |
1/08/2023 |
0 |
3.00 |
192.53 |
2.55 |
57.82 |
0 |
57 |
347 |
0 |
0 |
0 |
0 |
9 |
1/07/2023 |
0 |
3.00 |
192.99 |
2.57 |
57.92 |
0 |
4 |
263 |
0 |
0 |
0 |
0 |
10 |
1/06/2023 |
0 |
18.00 |
192.89 |
0.00 |
57.88 |
0 |
7 |
387 |
0 |
0 |
0 |
0 |
First, I thought that the input pv voltage was 0V due to bad connections, but I checked all the connections. but not,the pv terminal is shortcircuit that is the reason the input voltage is 0V. i dont know why my voltage battery up to 68.12V.
My system is triphasic with 3 multiplus II (3 kW - 48V), (total 9kW), 2 MPPT 250/100, and 2 batteries (29.2V-100Ah) (total 5800kW 58.4V)
i have 2 MPPT and 0V input
4 panels in serie V= 45 to 49 (P=545W)
Some information about what happens
Thanks
