Figure 5-2 OMB cabinet
Table 5-2 shows the dimensions of the OMB cabinet.
Table 5-2 Dimensions of the OMB cabinet
Length (mm)
Width (mm) Height (mm)
390 240 600
Functions
The functions of the OMB cabinet are as follows:
l Providing 3 U installation space for the distributed BTS.
l Supporting the AC input modes of 220 V single-phase, 110 V dual-live two-phase.
l Supporting -48 V DC power input.
l Providing secure and reliable surge protection and inductive lightning protection through
the AC surge protection box (optional).
l Connecting the grounding bus of the cabinet, PGND cable of the surge protector, and PGND
cables of other devices to the grounding busbar of the cabinet.
l Dissipating heat by using the core of the heat exchanger and outer and inner air circulation
fans and enabling excellent heat dissipation.
l Protecting itself against dust, adapting to different environments even though in adverse
air conditions.
l Being capable of working with the distributed or separated base stations and meeting the
requirements in different scenarios.
BBU3900
Hardware Description 5 Auxiliary Devices of the BBU3900
Issue 11 (2010-11-10) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
5-5
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