Working Principles - Huawei ETP4830-A1 User Manual

ETP4830-A1
User Manual
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2.4 Working Principles

Figure 2-2
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.
Figure 2-2 Conceptual diagram
Issue 06 (2014-02-20)
Displays information on a liquid crystal display (LCD) and provides buttons for
operations.
Supports electronic labels.
Rectifiers and the site monitoring unit (SMU) are hot-swappable.
Allows high-efficiency and standard-efficiency rectifiers with the same capacity to
coexist.
The rectifier power factor is 0.99.
shows the conceptual diagram. AC power enters rectifiers through the AC power
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