Monitoring Devices - Huawei Airbridge BTS3612A-1900 Technical Manual

Technical Manual
Airbridge BTS3612A CDMA Base Station
AC lightening arrester alarm.
Battery interface lightening arrester of battery cabinet.
Cabinet smoke alarms, water alarms, and door control alarms.
Current/voltage analog signals include:
Current of the battery group (A)
Total load current (A)
Busbar AC voltage (V)
Environment value analog signals include:
Temperature (
Humidity (RH%) inside the cabinet (with sensors)
Power system management:
PSU failure and PSU protection alarm.
The communications (between the PSU and the PMU) failure alarm.
Mains available or unavailable alarm.
Mains over voltage or under voltage alarm.
DC over voltage or under voltage alarm.
Fuse status value of the batteries (-0.3VDC<Normal voltage difference<0.3VDC).
II. Temperature control
The BTS3612A is an outdoor BTS with a sealed structure. When it operates in a
high-temperature environment, the heat generated by the devices may quickly raise
the temperature inside the cabinet.
To keep the temperature inside within a normal range in the extreme (either high or low)
temperature environment, an air conditioner or heat exchanger can be installed in the
cabinet. The equipped air conditioner or the heat exchanger itself is highly reliable and
able to report alarms when faults occur.

5.3.2 Monitoring Devices

I. Sensors
Sensors are installed inside the BTS3612A cabinet and the auxiliary battery cabinet.
The BTS3612A cabinet is equipped with temperature sensor, door status sensor, water
sensor and smoke sensor, while the auxiliary battery cabinet is only equipped with
temperature sensor and door status sensor.
II. TCU
The TCU supervises the temperature of the main equipment. When the temperature is
too high or too low, the TCU will cut off the 220V AC input and the –48V DC output from
the batteries, and shut down some boards to protect the main equipment.
Chapter 5 Power & Environment Monitoring Subsystem
o
C) inside the cabinet (with sensors)
5-7
System Principle