Huawei DBS3900 Installation Manual page 65

RRU3249
Installation Guide
Prerequisites
l
l
Context
If a power device provided by the customer is used, the recommended specification of the circuit
breaker on this power device is 15 A to 30 A.
Table 7-2
Table 7-2 RRU power cable
Cable
RRU
power
cable
l
l
l
Procedure
Step 1 Connect the tool-less female connector (pressfit type) at one end of the RRU power cable to the
power supply socket on the RRU, as shown in
Issue DraftA (2015-05-30)
A tool-less female connector (pressfit type) is added to the RRU power cable on the RRU
side. For details, see 10.1 Adding a Tool-Less Female Connector (Pressfit Type) to the
RRU Power Cable on the RRU
A connector or OT terminals are added to the RRU power cable on the power device side.
For details, see DBS3900 Installation Guide.
describes the RRU power cable.
On the RRU
Side
Tool-less female
connector
(pressfit type)
CAUTION
Before installing the RRU power cable, ensure that the upper-level circuit breaker is
switched off and the power cable has no voltage.
A drip loop is required for the position between the RRU port and the cable, preventing
rain from damaging the RRU.
When installing the RRU power cable, connect the power cable to the RRU connector first
and then to the power equipment connector. Incorrect connection sequence or reverse
connection of positive and negative poles may damage the RRU or cause personal injury.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Side.
On the Pow
Power er
Device Side Devi
ce
Tool-less EPU
female
DCD
connector
U-11
(pressfit type)
B
EPC5 DCD
connector U-12
B
Figure 7-26.
7 Installing RRU Cables
Color
A cable with a black jacket and two
wires inside
l North American standards: The
RTN(+) wire is black and the
NEG(-) wire is blue.
l European standards: The RTN
(+) wire is brown and the NEG
(-) wire is blue.
57