TP48200A-HT19C3 and TP48200A-HT19C4 Telecom
Power
User Manual
3 Components
Issue 03 (2019-11-15)
Copyright © Huawei Technologies Co., Ltd.
31
Table 3-10
UIM02C pin definitions
Silkscreen
No.
Pin Definitions
TEM-HUM
1
12 V
2
ENV_TEMP
3
12 V
4
ENV_HUM
WATER
1
12 V
2
WATER
3
GND
4
Not defined
TEMP1
1
GND
2
TEMP1
TEMP2
1
GND
2
TEMP2
GATE
1
GATE+
2
GATE-
SMOKE
1
SMOKE
2
12V
BTEMP
1
GND
2
BTEMP
3.6 Temperature Control Unit
The equipment compartments of the TP48200A-HT19C3 and TP48200A-HT19C4 use an
HXC150S to cool the air while the battery compartments use a TEC. The HXC150S consists
of two internal circulation fans, two external circulation fans, and a heat exchanging core
while the TEC consists of a TEC module and a TCUA control box.
3.6.1 Heat Exchanger
Working Principles
The equipment compartment is cooled by heat exchange, which is implemented through
internal circulation and external circulation.
Internal circulation: Hot air in the equipment compartment is drawn by the internal circulation
fan above the heat exchanger into the heat exchanger, passes through the heat exchanging