Huawei RRU3908 V1 Installation Manual page 26

Installing the AC RRU
c
Installing the Surge Protection Box (for Outdoor Scenarios)
3. Connect the power cable
between the surge protection
box and the RRU.
OUT
The cable led through the PG connector labeled OUT is the
power cable between the RRU and the surge protection box,
and the cable led through the PG connector labeled IN is the
external AC power cable.
Install the corrugated pipes for the AC power cables before
installing the AC RRU power cables. For details, see page 39.
4. Close the cover of the surge
protection box.
Lead the external AC power cable through the PG connector labeled
IN. The L, N, and PE wires of the power cable are connected to the
Lin, Nin, and PE terminals on the surge protection box.
Lead the power cable between the RRU and the surge protection
box through the PG connector labeled OUT. The Lin, Nin, and PE
wires of the power cable are connected to the Lout, Nout, and PE
terminals on the surge protection box.
Tighten the thread-lock sealing nut, and then use a wrench to further
tighten the connector for one or two laps to ensure its waterproofing
capability.
Insulating
layer
PG connector
Thread-lock
sealing nut
IN
5. Connect the PGND cable.
1.4N•m
OUT
Lead the cable through the removed thread-lock sealing nut
of the PG connector, and then lead the cable through the PG
connector.
The removed thread-lock sealing nut of the PG connector
cannot be replaced with the thread-lock sealing nuts of other
surge protection boxes.
Ensure that the case of the cable
pressed by the strap.
PGND cable
Equipotential cable
26
AC IN
insulating
layer is tightly