Working Principles - Huawei Telecom Power TP48200A-HX09A3 User Manual

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TP48200A-HX09A3, TP48200A-HX09A4,

TBC300A-DCA3, TBC300A-DCA5 and

TBC300A-TCA2 Telecom Power

User Manual



2.4 Working Principles

Figure 2-7 shows the conceptual diagram. AC power enters rectifiers through the AC power

distribution unit (PDU). The rectifiers convert the AC power input into -48 V DC power

output, which is directed by the DC PDU to DC loads along different routes.

When the AC power is normal, rectifiers power DC loads and charge batteries. When the AC

power is absent, rectifiers stop working and batteries start to power loads. After the AC power

resumes, rectifiers power DC loads and charge batteries again.

The SMU monitors the operating status of each component in the power system in real time

and performs appropriate intelligent control. When detecting a fault, the SMU generates an

alarm. The SMU monitors and regulates the temperature control unit based on the temperature

measured by the temperature sensor to ensure the normal operating temperature for the

cabinet.

Issue 04 (2019-11-15)

Communication with Huawei NetEco or third-party network management systems

(NMSs) over protocols such as the Simple Network Management Protocol (SNMP) and

Hypertext Transfer Protocol Secure (HTTPS) to enable remote management and

unattended working.

Liquid crystal display (LCD) for display and operations.

Web user interface (WebUI) for display and operations.

Display in multiple optional languages, such as English, Chinese, Spanish, Portuguese,

Italian, French, Russian, German, and Turkish.

Hot swapping of rectifiers and the site monitoring unit (SMU).

Rectifier power factor up to 0.99.

Rectifier efficiency up to 96%.

2 Overview

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