UPS5000-S-1200 kVA
User Manual
2 Overview
Issue 04 (2019-06-25)
Copyright © Huawei Technologies Co., Ltd.
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2.2.1 Conceptual Diagram
The UPS5000 is an online product. It uses a modular design, which facilitates maintenance
and capacity expansion. The UPS5000 uses the digital signal processing (DSP) technology for
intelligent control. Its power module consists of a rectifier, inverter, and DC/DC converter.
The UPS5000 converts inputs into pure high-quality sine wave outputs by using the
high-frequency switching technology.
Figure 2-2
UPS conceptual diagram
2.2.2 Working Modes
2.2.2.1 Normal Mode
In normal mode, the rectifier converts AC power into DC power, then the inverter converts
DC power into high-precision AC outputs. The conversions protect loads from interference
such as input harmonics, glitches, and voltage transients.