Functions
The PSU implements the following functions:
l
Converts 110 V or 220 V AC power into -48 V DC power. The power monitoring unit
(PMU) adjusts the output voltage.
l
Provides protection against overcurrent, overvoltage, and overheat.
l
Dissipates heat using built-in fans.
Exterior
shows the PSU exterior.
Figure 4-8
PSU exterior
NOTE
A scanner is required for stock management to scan the two-dimensional bar code on the front panel of the
PSU.
Indicators
shows the indicators on the front panel of the PSU.
Figure 4-9
Indicators on the front panel of the PSU
(1) Power indicator
(2) Protection indicator
(3) Fault indicator
describes the indicators on the front panel of the PSU.
BTS3900C (Ver.C)
Hardware Description
4 BTS3900C Power System
Issue 03 (2013-05-27)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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