Weidmüller PV DC COMBINER BOX, Operating Instructions Manual

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29 4000001903/00/04.2020
Some parts of the PV DC COMBINER BOX can
be replaced in case of damage. Before proceed
with any of these replacements, we highly re-
commend to contact with your Weidmüller repre-
sentative to clarify any doubt.
8.1 Replacing fuses
DANGER
Imminent risk of life!
High voltages up to 1.000 or 1.500 V DC are
present in the live parts.
► Ensure that the product is switched off and
that it is free of hazardous voltage (from
generator side and from inverter side).
► Ensure that there is no current flowing
through the string before removing fuses.
Never remove fuses under load.
► Use only fuses provided by Weidmüller.
► Use only the same type of fuse like the
ones inserted in the other fuse holder
(same model and rate).
► Before replacing fuses, verify that there is no electrical
issue active in the circuit which could cause the blowing
of the new fuse.
► Verify by visual check, that the fuse holders are free
from any damage
► Disconnect the DC switch.
Combiner box with PV connectors:
► Disconnect the PV string cable outside of the combiner
box to assure that there is no voltage in the damaged
fuse.
► Extract the damaged fuse and insert the new one.
8.2 Replacing a switch disconnector
DC switches cannot be replaced easily by operators in
the field. If this device is damaged, please contact your
Weidmüller representative.
8.3 Replacing string monitoring devices
Transclinic 16i+ 1k5 HP string monitoring devices must not
be replaced by operators in the field. If this device is dam -
aged, please contact your Weidmüller representative.
8.4 Replacing surge protection arresters
DANGER
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.
► Do not reach into the sockets when the ar -
rester is removed.
Weidmüller SPDs have three individual arresters. If the
SPD is damaged, the status indicator of the respective ar-
rester will be red.
Figure 8.1 Status indicators of the SPD
► In order to replace an arrester, proceed as shown below.
1.
2.
Figure 8.2 Removing a surge voltage arrester
8 Accessories and replacing parts