5.5 DCDU-03
The Direct Current Distribution Unit-03 (DCDU-03) supplies DC power to each component in
the cabinet. The height of the DCDU-03 is 1 U. It can be classified into the DCDU-03B and
DCDU-03C according to the configured MCBs and application scenarios. The two models have
the same exterior, engineering specifications, and ports.
Exterior
Figure 5-6 shows the DCDU-03.
Figure 5-6 DCDU-03
Functions
The DCDU-03 provides nine -48 V DC outputs and different MCB configurations to meet the
power distribution requirements of the scenarios of distributed and separated base stations.
Table 5-4 describes the DC power distribution functions of the DCDU-03.
Table 5-4 DC power distribution functions of the DCDU-03
DCDU
Model
DC Output
Terminal
Power
Consumpti
on
Equipment
MCB
Specificati
on
MCB
Quantity
Applicatio
n Scenario
DCDU-03B LOAD0 to
LOAD5
RRU 20 A 6 Distributed
base station/
Mini base
station
LOAD6 to
LOAD8
BBU and the
transmission
equipment of
the customer
12 A 3
BBU3900
Hardware Description 5 Auxiliary Devices of the BBU3900
Issue 11 (2010-11-10) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
5-9
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