Fronius IG Plus 35 V-1 - Solar Module Ground at Positive Pole: Connecting Solar Module Strings

63
g
Solar Module Ground at Positive Pole: Connecting
Solar Module Strings
General The following steps are necessary when the solar module manufacturer requires a solar
module ground at the positive pole.
Wire Cross Sec-
tion of Solar Mod-
ule Strings
The cable cross section for solar module strings should be a maximum of 16 mm² per ca-
ble.
Solar module
ground at posi-
tive pole: Con-
necting solar
module strings
After disconnecting the DC main switch cable:
- Connect the DC+ cable to the DC- connection as per step 5
- Connect the DC- cable to the DC+ connection as per step 5
- Identify the reversed polarity with (+) and (-) according to steps 6 and 7
NOTE! To ensure an effective strain relief device for solar module strings, only
use cable cross sections of the same size.
1
1
6 x
1
2
1
2
3
4
4
3
1
3
2
4
DC
+
DC
-
4