Huawei TP48200A-HX09A2 User Manual page 32

TP48200A-HX09A2, TBC300A-TCA2 Outdoor Power
System
User Manual
Figure 2-18 TCUA
(1) Power input port
(4) Switch port
(7) Indicator
(10) Temperature signal port
1
(13) Internal fan port 2
TEC Working Principle
The TEC cools and heats air over the internal and external air circulation.
the TEC working principles.
Table 2-13 TEC working principles
Function
Refrigeration
Heating
Issue 02 (2019-02-26)
(2) External fan port 1
(5) Door status sensor port
(8) Communications port 1
(11) TEC air conditioner port
(14) Temperature signal port
2
Figure 2-19
Working Principle
The TCUA controls the TEC04C to cool the internal circulating air. The
internal circulating fan draws the air inside the battery compartment into
the internal heat sink. The internal heat sink cools the air and then
returns the cooled air to the battery compartment from the air exhaust
vent. At meantime, the external fan draws the external circulating air
into the external heat sink to accelerate the airflow. The air absorbs the
heat and returns to the external environment from the air exhaust vent of
the external heat sink. The air exchange between the internal and
external environment is implemented so far.
The TCUA controls the TEC04C to heat the internal circulating air. The
internal circulating fan draws the air inside the battery compartment into
the internal heat sink. The internal heat sink heats the air and then
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shows the TEC airflow directions.
2 Components
(3) External fan port 2
(6) Electronic label port
(9) Communications port
2
(12) Internal fan port 1
Table 2-13 shows
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