Checking Surge Protection Arresters; Replacing Surge Protection Arresters; Checking Insulation Resistance; Service - Weidmuller PV Next series Bedienungsanleitung

Maintenace
► Carefully push the (new) fuse link into the fuse holder
using the tool. Take care not to damage the PCB!
► Make sure that the fuse links are properly seated in the
fuse holders by visually checking the position of the fuse
link between the clamping jaws of the fuse holder.
► If you do not want to carry out any further work, close
the PV NextString Combiner Box again.

8.3 Checking surge protection arresters

Weidmüller surge protection devices are equipped with
replaceable arresters. If an arrester is damaged or has
reached the end of its service life, it switches off automati-
cally. The status indicator of the affected arrester turns red.
Figure 8.1 Status indicators of the surge protection arresters
At the same time, the remote signalling contact (X1.1) is
activated, which can optionally be evaluated by your in-
verter or data logger. If the remote signalling contact of the
surge protection is read by the inverter or a data logger,
there is no need to carry out a regular visual check of the
surge protection arrester.
Switched off arresters no longer have a protec-
tive function and must be replaced immediately.

8.4 Replacing surge protection arresters

Imminent risk to life!
The contacts in the sockets of the surge pro-
tection arresters are live. The system must be
switched off for this work.
► Switch off the system as described in chap-
ter 2.2.
► Do not reach into the sockets when the ar-
rester is removed.
The surge protection arresters are coded with a
pin on the underside. This ensures that only the
correct arrester can be plugged into a socket.
► Only use arresters with identical article num-
bers.
44
DANGER
1.
Figure 8.2 Removing surge protection arresters
3.
Figure 8.3 Inserting surge protection arresters
► If you do not want to carry out any further work, close
the PV Next String Combiner Box again.

8.5 Checking insulation resistance

Measuring the insulation resistance of plugged-in
surge protection arresters leads to an incorrect
measurement.
► Before measuring, remove the surge protection arrest-
ers (see chapter 8.4).
► After the measurement has been completed, reinsert the
surge protection arresters into their sockets (see chap-
ter 8.4).
► If you do not want to carry out any further work, close
the PV Next String Combiner Box again.

8.6 Service

If you have questions about the PV Next String Combiner
Box, please contact the Weidmüller representative in your
country.
Further information about the PV Next String Combiner
Box, such as videos, assembly instructions and FAQs, can
be found on the Weidmüller website.
www.weidmueller.com/pvnext
2.
4.
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