Power Distribution Scheme in the 110 V AC or 220 V AC Power Supply Scenario
When 110 V AC or 220 V AC power is supplied, the ETP48100-A1 in the OMB converts the
one AC input into two DC outputs.
Figure 4-1 shows the power distribution scheme for a cabinet supplied with 110 V AC or 220
V AC power. Table 4-3 lists the specifications of fuses in the base station.
NOTE
When 220 V AC single-phase power is used, the live wire must be connected to a circuit breaker.
Figure 4-1 Power distribution scheme for a cabinet supplied with 110 V AC or 220 V AC power
Table 4-3 Specifications of fuses when 110 V AC or 220 V AC power is supplied
Input Power
Specifications of a circuit breaker
220 V AC single-phase
l RRU: 1x30 A
l BBU: 1x30 A
l HEUB: 1x30 A
110 V AC dual-live-wire
Power Distribution Scheme in the -48 V DC Power Supply Scenario
When -48 V DC power is supplied, the PDU10D in the OMB converts the one DC input into
several DC outputs and distributes the DC power to modules such as the BBU, HEUB, and
RRUs.
Figure 4-2 shows the power distribution scheme for a cabinet supplied with -48 V DC power.
Table 4-4 lists the specifications of fuses in the base station.
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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