Weidmuller PV Next String Combiner Box Bedienungsanleitung Seite 27

2 Safety
This section includes general safety notes for handling the
product. Specific warnings for specific tasks and situations
are given at the appropriate places in the documentation.
Failure to observe the safety notes and warnings can result
in physical injury and material damage.
2.1 General safety notes
Before carrying out any work on the product, it must be
switched off and free of dangerous voltage (see chapter
2.2). This reduces the risk of electric shocks and arcing.
The product is not suitable for use in potentially explo-
Sive atmospheres. Work on the product can generate
sparks that can ignite a potentially explosive air mixture.
The approved environmental
lation site must be observed (see chapter 5.1 on page
37).
The operator must ensure that the product is not acces-
Sible to unauthorised persons.
No combustible or electrically conductive materials may
be stored inside the enclosure.
The product must not be operated with damaged cables
or connectors, as they may cause electric shock, short
circuit or fire. Do not touch damaged areas and ensure
the systern is not live. Have the system checked and re-
paired by a specialist.
Do not connect PV connectors
turers.
Suitable personal protective equipment must be worn
during all work on the product.
During installation and maintenance work, make sure
that no moisture can penetrate into the enclosure.
The PV system must be designed in such a way that all
components are operated exclusively within their per-
missible operating range.
— Local installation regulations must be observed.
The product may not come into contact with product or
media (including gases) that contain petrol, kerosene,
ammonia, hydrogen sulphide or plasticisers.
The product must be protected against flooding and may
not be covered continuously with snow or ice.
— If a fault in the product cannot be remedied by the meas-
ures described in these instructions, you must return the
product to Weidmüller. Weidmüller does not provide a
guarantee if the product has been tampered with.
Fuse links must not be removed
as this may result in life-threatening arcing.
The outputs of the product must never be connected to
the inverter (load) while it is live. Even when the inverter
is switched off, charging the internal capacitors can lead
to dangerous arcing.
Never touch exposed live parts or cables.
Do not disconnect PV connectors
2690250000/05/10.2022
conditions for the instal-
from different manufac-
or inserted under load
under load.
Disconnect the inverter before carrying out any main-
tenance work. Inverters contain capacitors that store
life-threatening levels of voltage. Wait until the capaci-
tors are discharged.
Follow the operating instructions of the inverter you are
using. Contact the manufacturer for more information
and advice.
2.2 Switching off and on safely
Risk of fatal
ing live DC cables and live parts in the
opened product!
PV systems can generate dangerous voltag-
es. Before starting work, ensure that the PV
system and devices are disconnected from the
mains and from the PV generators.
Before carrying out any work on the prod-
uct, it must be disconnected from the power
supply and secured against being switched
on again.
Switching off safely
Ensure the absence of voltage before opening the prod-
uct. Proceed exactly in this order:
1. Switch off the inverter.
2. Switch the switch-disconnector
inverter to the off position.
3. Disconnect all connections of the string cables to the
inputs of the product. Both the positive and negative
connections must be disconnected.
Now you can open the product.
Weidmüller
DANGER
electric shock when touch-
of the product or of the
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