Figure 4-50 Power equipment (AC/DC)
(1) PMU (2) PSUs (AC/DC) (3) Power subrack (AC/DC)
Table 4-64 describes the components of the power equipment (AC/DC).
Table 4-64 Components of the power equipment (AC/DC)
Component Description
PMU For details, see 4.12.2 PMU.
PSU (AC/DC) For details, see 4.12.3 PSU (AC/DC).
Power subrack (AC/DC) For details, see 4.12.4 Power Subrack (AC/
DC).
4.12.2 PMU
The Power and Environment Monitoring Unit (PMU) performs the power system management,
power distribution detection, and alarm reporting functions.
Exterior
Figure 4-51 shows the PMU.
Figure 4-51 PMU
4 BTS3900 Components
BTS3900
Hardware Description
4-70 Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Issue 04 (2011-02-15)
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