Fronius IG Plus 3.0-1 Operating Instructions Manual page 50

Connecting
Solar Module
Strings
(continued)
Tightening torque for solid and stranded
wires
Important
-
-
5
DC+ DC+
1
DC-
NOTE
Form a min. 4 in. wire loop using all wires.
7
2
2
3
Set the jumper from the 'SM
correct measurement results
Check the polarity and voltage of the solar module strings: the DC-
voltage must not exceed 600 V, the difference between the individual
solar module strings should be less than 10 V.
The DC Voltage must not exceed
600 V, regardless of temperature.
6
2
1.33 ft. lb.
3
Tightening torque for solid and stranded
wires
8
4
1
2
' position to the 'SM
ON
40
NOTE Connecting the
DC wiring with the wrong
polarity may cause dama-
ge to the inverter.
Check both the polarity
and the open circuit volta-
ge.
2
DC-
1
DC+
SM
ON
1
2
3
SM
' position for
OFF
1.33 ft. lb.
OFF