The following tables focuses on stand-alone PV systems where the PV array power is routed to a MPPT charger. Currents are limited to 30 A which is a typical maximum value accepted at the input of commercial power chargers up to 7 kW . The left column provides the current while in the horizontal direction the quotient of the length of the single path of the conductor to the operating voltage (in m / Volt) of the PV array (the circuit consists of conductors of total length 2L) is given.
The calculations refer to conductors made of copper and voltage drop of 2% . The cross sections are given in square millimeters (mm ^ 2) and therefore we must select the next largest cross section that is (commercially) available ( 1, 1.5, 2.5, 4, 6, 10, 16, 25, 35 , 50, 70, 95, 120, ….).
At the bottom of the page a table with indicative values of the maximum allowable current per section of the pipeline is given.
|
Μήκος μονής |
||||||||||||||
|
Amps |
1.33E-03 |
1.64E-03 |
2.02E-03 |
2.48E-03 |
3.05E-03 |
3.75E-03 |
4.61E-03 |
5.67E-03 |
6.97E-03 |
8.57E-03 |
1.05E-02 |
1.30E-02 |
1.59E-02 |
2.00E-02 |
|
1.0 |
0.00 |
0.00 |
0.00 |
0.01 |
0.01 |
0.01 |
0.01 |
0.01 |
0.01 |
0.02 |
0.02 |
0.03 |
0.03 |
0.04 |
|
4.0 |
0.01 |
0.01 |
0.02 |
0.02 |
0.03 |
0.03 |
0.04 |
0.05 |
0.06 |
0.07 |
0.09 |
0.11 |
0.13 |
0.16 |
|
6.0 |
0.02 |
0.02 |
0.02 |
0.03 |
0.04 |
0.05 |
0.06 |
0.07 |
0.09 |
0.11 |
0.13 |
0.16 |
0.20 |
0.25 |
|
10.0 |
0.03 |
0.03 |
0.04 |
0.05 |
0.06 |
0.08 |
0.09 |
0.12 |
0.14 |
0.18 |
0.22 |
0.27 |
0.33 |
0.41 |
|
12.5 |
0.03 |
0.04 |
0.05 |
0.06 |
0.08 |
0.10 |
0.12 |
0.15 |
0.18 |
0.22 |
0.27 |
0.33 |
0.41 |
0.52 |
|
15.0 |
0.04 |
0.05 |
0.06 |
0.08 |
0.09 |
0.12 |
0.14 |
0.18 |
0.22 |
0.26 |
0.33 |
0.40 |
0.49 |
0.62 |
|
17.5 |
0.05 |
0.06 |
0.07 |
0.09 |
0.11 |
0.14 |
0.17 |
0.20 |
0.25 |
0.31 |
0.38 |
0.47 |
0.57 |
0.72 |
|
20.0 |
0.05 |
0.07 |
0.08 |
0.10 |
0.13 |
0.15 |
0.19 |
0.23 |
0.29 |
0.35 |
0.43 |
0.53 |
0.66 |
0.82 |
|
22.5 |
0.06 |
0.08 |
0.09 |
0.11 |
0.14 |
0.17 |
0.21 |
0.26 |
0.32 |
0.40 |
0.49 |
0.60 |
0.74 |
0.93 |
|
25.0 |
0.07 |
0.08 |
0.10 |
0.13 |
0.16 |
0.19 |
0.24 |
0.29 |
0.36 |
0.44 |
0.54 |
0.67 |
0.82 |
1.03 |
|
27.5 |
0.08 |
0.09 |
0.11 |
0.14 |
0.17 |
0.21 |
0.26 |
0.32 |
0.39 |
0.49 |
0.60 |
0.73 |
0.90 |
1.13 |
|
30.0 |
0.08 |
0.10 |
0.12 |
0.15 |
0.19 |
0.23 |
0.28 |
0.35 |
0.43 |
0.53 |
0.65 |
0.80 |
0.99 |
1.24 |
|
Μήκος μονής |
||||||||||||||
|
Amps |
0.021 |
0.032 |
0.044 |
0.056 |
0.070 |
0.082 |
0.094 |
0.100 |
0.120 |
0.140 |
0.160 |
0.180 |
0.190 |
0.200 |
|
1.0 |
0.0 |
0.1 |
0.1 |
0.1 |
0.1 |
0.2 |
0.2 |
0.2 |
0.2 |
0.3 |
0.3 |
0.4 |
0.4 |
0.4 |
|
4.0 |
0.2 |
0.3 |
0.4 |
0.5 |
0.6 |
0.7 |
0.8 |
0.8 |
1.0 |
1.2 |
1.3 |
1.5 |
1.6 |
1.6 |
|
6.0 |
0.3 |
0.4 |
0.5 |
0.7 |
0.9 |
1.0 |
1.2 |
1.2 |
1.5 |
1.7 |
2.0 |
2.2 |
2.3 |
2.5 |
|
10.0 |
0.4 |
0.7 |
0.9 |
1.2 |
1.4 |
1.7 |
1.9 |
2.1 |
2.5 |
2.9 |
3.3 |
3.7 |
3.9 |
4.1 |
|
12.5 |
0.5 |
0.8 |
1.1 |
1.4 |
1.8 |
2.1 |
2.4 |
2.6 |
3.1 |
3.6 |
4.1 |
4.6 |
4.9 |
5.2 |
|
15.0 |
0.6 |
1.0 |
1.4 |
1.7 |
2.2 |
2.5 |
2.9 |
3.1 |
3.7 |
4.3 |
4.9 |
5.6 |
5.9 |
6.2 |
|
17.5 |
0.8 |
1.2 |
1.6 |
2.0 |
2.5 |
3.0 |
3.4 |
3.6 |
4.3 |
5.0 |
5.8 |
6.5 |
6.8 |
7.2 |
|
20.0 |
0.9 |
1.3 |
1.8 |
2.3 |
2.9 |
3.4 |
3.9 |
4.1 |
4.9 |
5.8 |
6.6 |
7.4 |
7.8 |
8.2 |
|
22.5 |
1.0 |
1.5 |
2.0 |
2.6 |
3.2 |
3.8 |
4.4 |
4.6 |
5.6 |
6.5 |
7.4 |
8.3 |
8.8 |
9.3 |
|
25.0 |
1.1 |
1.6 |
2.3 |
2.9 |
3.6 |
4.2 |
4.8 |
5.2 |
6.2 |
7.2 |
8.2 |
9.3 |
9.8 |
10.3 |
|
27.5 |
1.2 |
1.8 |
2.5 |
3.2 |
4.0 |
4.6 |
5.3 |
5.7 |
6.8 |
7.9 |
9.1 |
10.2 |
10.8 |
11.3 |
|
30.0 |
1.3 |
2.0 |
2.7 |
3.5 |
4.3 |
5.1 |
5.8 |
6.2 |
7.4 |
8.7 |
9.9 |
11.1 |
11.7 |
12.4 |
|
Μήκος μονής |
||||||||||||||
|
Amps |
0.21 |
0.40 |
0.60 |
1.00 |
1.50 |
2.00 |
2.50 |
3.50 |
4.50 |
5.50 |
6.50 |
7.00 |
7.50 |
8.50 |
|
1.0 |
0 |
1 |
1 |
2 |
3 |
4 |
5 |
7 |
9 |
11 |
13 |
14 |
15 |
18 |
|
4.0 |
2 |
3 |
5 |
8 |
12 |
16 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
|
6.0 |
3 |
5 |
7 |
12 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
|
10.0 |
4 |
8 |
12 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
|
12.5 |
5 |
10 |
15 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
|
15.0 |
6 |
12 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
|
17.5 |
8 |
14 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
|
20.0 |
9 |
16 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
|
22.5 |
10 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
|
25.0 |
11 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
|
27.5 |
12 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
|
30.0 |
13 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
>35 |
|
Διατομή αγωγού (mm2) |
||||||||||||
|
1 |
1.5 |
2.5 |
4 |
6 |
10 |
16 |
25 |
35 |
50 |
70 |
95 |
120 |
|
10 |
25 |
34 |
43 |
55 |
75 |
100 |
135 |
170 |
205 |
260 |
320 |
375 |
|
Ενδεικτικό Μέγιστο ρεύμα (Αmps) |
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