TP48200A-HT19C3 and TP48200A-HT19C4 Telecom
Power
User Manual
2 Overview
Issue 03 (2019-11-15)
Copyright © Huawei Technologies Co., Ltd.
16
2.2 Model Number Description
Figure 2-2 describes the model numbers for the TP48200A-HT19C3 and
TP48200A-HT19C4.
Figure 2-2
Model number description
2.3 System Features
Wide AC input voltage range of 85 V AC to 300 V AC.
Comprehensive battery management.
Comprehensive AC and DC surge protection design.
Network application over a fast Ethernet (FE) port and an RS485/RS232 port.
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%.
2.4 Working Principles
Figure 2-3 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
