TP48200A-HX09A1 and TBC300A-DCA5 Telecom
Power
User Manual
3 Components
Issue 03 (2019-11-15)
Copyright © Huawei Technologies Co., Ltd.
34
Figure 3-14 shows the heat exchange working principles.
Figure 3-14
Heat exchange working principles
3.7 Temperature Control Unit (for the TBC300A-DCA5)
3.7.1 Direct Ventilation
Working Principle
The fan draws the air out of the cabinet and absorbs the heat inside to cool the cabinet and
hence save the energy. Figure 3-15 shows the working principles of the direct ventilation.
Figure 3-16 shows a TCUA.