TP48200A-HT19C3 and TP48200A-HT19C4 Telecom
Power
User Manual
3 Components
Issue 03 (2019-11-15)
Copyright © Huawei Technologies Co., Ltd.
35
Function
Working Principle
circulation heat sink and returns to the external environment through the air exhaust
vents on the external circulation heat sink. The heat exchange between the internal and
external environment is implemented so far.
Heating
The TCUA control box controls the refrigeration chip in the TEC module to heat the
internal circulating air. The internal circulation fan draws the air inside the battery
compartment into the internal circulation heat sink. The internal circulation heat sink
heats the air and then returns the heated air to the battery compartment through the air
exhaust vents. Meantime, the external circulation fan operates according to control logic
and draws natural air into the external circulation heat sink. The air gives out heat and
returns to the external environment through the air exhaust vents on the external
circulation heat sink.
Figure 3-15
TEC airflow directions
3.7 Sensor
Figure 3-16 shows the positions of all sensors in the TP48200A-HT19C3 & HT19C4.