Heater - Huawei TP48200A-DT19D1 Telecom Power User Manual

TP48200A-DT19D1 Telecom Power
User Manual
Function
Heating
Figure 3-12 TEC airflow directions

3.6 Heater

A heater assembly unit (HAU) is adopted to ensure a proper operating temperature for the
equipment inside the cabinet.
Issue 03 (2019-11-15)
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.
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.
Copyright © Huawei Technologies Co., Ltd.
3 Components
33