Figure 4-2
Power distribution scheme for a cabinet supplied with -48 V DC power
Table 4-4
Specifications of fuses when -48 V DC power is supplied
Input Power
Specifications of a circuit breaker
-48 V DC
l
RRU: 1x30 A
l
BBU: 1x30 A
l
HEUB: 1x30 A
4.3 ETP48100-A1
The embedded telecommunication power 48100-A1(ETP48100-A1) system converts external
220 V or 110 V AC input power into -48 V DC power.
4.3.1 ETP48100-A1 Components
The embedded telecommunication power 48100-A1 (ETP48100-A1) system consists of the
power monitoring unit 11A (PMU 11A), power supply unit (PSU), and ETP48100-A1 subrack.
shows the ETP48100-A1 components.
BTS3900C (Ver.C)
Hardware Description
4 BTS3900C Power System
Issue 03 (2013-05-27)
Huawei Proprietary and Confidential
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