User Documentation

452690250000/03/09.2020
Commissioning
Variant with cable glands:
Remove the caps and the rubber seals from the M25 ca-
ble glands for IN + and OUT + as well as IN – and OUT –.
Insert the new multiple sealing insert (3 x 7 mm) into
each cable gland and t both caps.
If not all openings of the multiple sealing insert are re-
quired, seal all openings that are not required with the
supplied blind pins (Ø 7 x 28 mm).
If only one output line is provided for OUT + and OUT – ,
you can alternatively t the M25 cable gland using the
supplied reducing sealing insert 9 16 mm.
Feed the output cable through the cable glands into the
enclosure.
Strip the output cable and connect it.
Connect the output cable to the inverter(s). Refer to the
inverter manufacturer's documentation.
Ensure that the string cables are free of voltage.
Check the absence of voltage using a suitable voltage
tester.
Insert the string cable.
Strip the string cable and connect it.
Check that all cables are connected with the correct po-
larity.
Tighten the cap nuts of the cable glands (observe tor-
ques).
Optional: Insert the fuse links into the fuse holders.
Mount the cover of the PV Next String Combiner Box
(observe torque).
Connect the string cables to the PV generators.
Move the switch-disconnector of the PV Next
String Combiner Box to the on-position.
Switch on the inverter.
Variant with PV connector:
Plug the output cables into the output connectors.
Connect the output cables to the inverter(s). Refer to the
inverter manufacturer's documentation.
Check that all cables are connected with the correct po-
larity.
Optional: Insert the fuse links into the fuse holders.
Mount the cover of the PV Next String Combiner Box.
Plug the string cables into the input connectors.
Tighten the cap nuts of the cable glands (observe tor-
ques).
Move the switch-disconnector of the PV Next
String Combiner Box to the on-position.
Switch on the inverter.