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TP48200A-HX09A3, TP48200A-HX09A4, TBC300A-DCA3, TBC300A-DCA5, TBC300A-TCA2 Outdoor Power System User Manual

This document describes the DC power systems in terms of their features, configurations, components, and maintenance methods.
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Direct Ventilation

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 3-21 shows the working principles of the direct ventilation. Figure 3-22 shows a TCUA.

Figure 3-21  Airflow direction in the direct ventilation unit

Figure 3-22  TCUA

(1) Power input port (2) External fan port 1 (3) External fan port 2
(4) Switch port (5) Door status sensor port (6) Electronic label port
(7) Indicator (8) Communications port 1 (9) Communications port 2
(10) Temperature signal port 1 (11) TEC air conditioner port (12) Internal fan port 1
(13) Internal fan port 2 (14) Temperature signal port 2  
Updated: 2019-03-05

Document ID: EDOC1000036238

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