Huawei BTS3900C Hardware Description page 111

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