Fronius String Control 250/30 - Manual (Page 22)

20
Connection with
V-type terminal
lug
(1) Tightening torque 25 Nm
(2) Tightening torque 6 Nm
Connection with
cable lug
(1) Tightening torque 28 Nm
(2) Tightening torque 6 Nm
Connecting the
Fronius String
Control 250/30 to
the inverter Connect the DC 'OUT' cables to the inverter as described in the inverter operating in-
structions
1 2
1
(1)
(2)
2
NOTE! Note the following points when connecting:
-
Is solar module grounding required or is it already grounded?
If so, note the special features of the respective solar module grounding
- If the solar module is already grounded, Fronius recommends that you al-
ways use string fuses in the ungrounded branch.
- Connect the DC 'OUT' cable to the inverter, ensuring that the polarity is cor-
rect
1