Procedure
Step 1 Prepare an RRU power cable.
1. Cut the cable to the required length based on the actual cable route.
2. Add an easy power receptacle (pressfit type) connector to one end of the RRU power cable.
For details, see Assembling the Easy Power Receptacle (Pressfit Type) Connector and the
Power Cable.
3. Add OT terminals or an easy power receptacle (pressfit type) connector to the other end of
the RRU power cable according to the type of power supply socket on the RRU.
l Add an OT terminal. For details, see the related RRU Installation Guide.
l Add an easy power receptacle (pressfit type) connector. For details, see the related RRU
Installation Guide.
Step 2 Install an RRU power cable, as shown in Figure 14-41.
1. Link the easy power receptacle (pressfit type) connector at one end of the RRU power cable
to the RRU0 port on the EPS subrack.
NOTE
An EPS subrack supplies power to a maximum of six RRUs. Therefore, an RRU power cable can be
connected to any of the RRU0 to RRU5 ports on the EPS subrack.
CAUTION
The blue and black wires on which the easy power receptacle (pressfit type) connector is
added respectively correspond to the left and right ports on the EPS subrack.
2. If OT terminals are at the other end of the RRU power cable, respectively link the OT
terminals on the blue and black (or brown) wires to the NEG(-) and RTN(+) wiring
terminals in the cabling cavity of an RRU. If an easy power receptacle (pressfit type)
connector is at the other end of the RRU power cable, respectively link the blue and black
(or brown) wires to the NEG(-) and RTN(+) ports in the cabling cavity of an RRU.
Figure 14-41 Installing an RRU power cable
DBS3900 (Ver.B)
Installation Guide
14 Indoor Scenario with DC Power Supply (BBU Installed
Indoors and RRU Powered Outdoors)
Issue 06 (2011-09-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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