Commissioning; Preconditions For Commissioning; Commissioning The Pv Next String Combiner Box - Weidmuller PV Next series Bedienungsanleitung

6

Commissioning

6.1 Preconditions for commissioning

The PV Next String Combiner Box is fully mounted.
► Before commissioning, check that the product is not
damaged.
If the enclosure, printed circuit board or individ-
ual components are damaged or heavily soiled,
do not operate the product. Contact your Weid-
müller representative or distributor.
During commissioning, ensure that no moisture,
dust or foreign objects can penetrate into the
product.
Two procedures are permitted for installation
work:
– Working on live components: Only electricians
who are qualified to work on live components
may work under voltage. They must comply
with local regulations (e.g. personal protective
equipment and risk assessment).
– Voltage-free working: Input and output cables
must be properly disconnected and secured
against being switched on again. Voltage-free
work may be carried out by electricians and
trained personnel.
► Refer to the inverter manufacturer's documen-
tation.
The Weidmüller WM4C and PV-Stick PV connectors are
compatible with each other. Weidmüller accepts no liability
for damage caused by the use of connectors from other
manufacturers.
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6.2 Commissioning the PV Next String Com-
biner Box
Imminent risk to life!
Work on live components may only be carried
out by qualified electricians.
► Observe the country-specific regulations for
working on live components.
► When working on live components, always
use suitable tools and aids that eliminate
the risk of electric arcs and electric shocks.
Imminent risk to life!
Up to 1,000 V DC can be present on live parts.
► Make sure that the voltage is not restored
until the work has been completed.
► Switch off the inverter. If there is a switch-disconnector
on the inverter, it must be in the off-position.
► If there is a switch-disconnector on the PV Next
String Combiner Box, it must be in the off-position.
► Insert the functional earth cable and the remote signal-
ling cable into the enclosure.
► Disconnect the functional earth cable, crimp a wire-end
ferrule onto the cable and connect it.
► Disconnect the wires of the remote signalling cable,
crimp the wire end ferrules onto the wires and connect
them to the terminal of the remote signalling contact.
► Check that all cables are connected with the correct po-
larity.
► Carry out the further steps according to your product
variant.
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