Chapter 5 Power & Environment Monitoring Subsystem; Overview - Huawei Airbridge BTS3612A-1900 Technical Manual

Technical Manual
Airbridge BTS3612A CDMA Base Station
Chapter 5 Power & Environment Monitoring

5.1 Overview

The functional structure of the power & environment monitoring subsystem is shown in
Figure 5-1.
Env ironment
monitor and
sensors
220V AC
or
110V AC
Figure 5-1 Functional structure of the power & environment monitoring subsystem
The subsystem provides functions of power distribution and environment monitoring
(including temperature control).
The power distribution part includes the AC distribution unit, PSU
distribution unit, PSU
The environment monitoring part includes the PMU and the air conditioner or heat
exchanger.
The following sections describe the working principles of power distribution and
environment monitoring. As the PMU mainly implements the monitoring functions, it will
be introduced in Section 5.3, "Environment Monitoring"
Subsystem
Boolean v alue
PMU
Analog v alue
RS485
AC
-48VDC
distribution PSUAC/DC
unit
Battery subrack/
Air conditioner/
cabinet
heat ex changer
, PMU, and the battery subrack or cabinet.
DC/DC
Chapter 5 Power & Environment Monitoring Subsystem
RS485
-48VDC
DC
distribution
unit
5-1
System Principle
BCKM
Transmissio
n equipment
Heat
ex changer fan
Lamp
Baseband
PSUDC/
+24VDC
boards and RF
DC
modules
, the DC
AD/DC