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.