Weidmuller PV Next String Combiner Box Bedienungsanleitung Seite 43

—Non-conductive fuse links must be replaced with new
fuse links of the same type.
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 product 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
cally. The status indicator of the affected arrester turns red.
Figure 8.1Status indicators of the surge protection arresters
At the same time, the remote signalling contact (Xl. 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
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 (see chapter 2.2).
Do not reach
rester is removed.
2690250000/05/10.2022
off automati-
DANGER
to life!
into the sockets when the
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 item num-
bers.
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 product 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 completing the measurement, reinsert the surge
protection arresters into their sockets (see chapter 8.4).
ar-
If you do not want to carry out any further work, close
the product again.
2.
Weidmüller
Maintenance
4.
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