Working Modes; Normal Mode; Bypass Mode - Huawei UPS5000-H Series User Manual

UPS5000-H-(400 kVA-600 kVA)
User Manual (100 kVA Power Module)
Figure 2-4 Conceptual diagram

2.5 Working Modes

2.5.1 Normal Mode

In normal mode, the rectifier converts AC power into DC power. Then the inverter
converts DC power into AC output. At the same time, the rectifier charges
batteries over a charger. The two conversions ensure high-precision and high-
quality output voltages, protecting loads from interferences such as input
harmonics, glitches, and voltage transients.
Figure 2-5 UPS conceptual diagram in normal mode

2.5.2 Bypass Mode

When the UPS detects that the power module experiences overtemperature,
overload, or other faults that may shut down the inverter, the UPS automatically
transfers to bypass mode. At the same time, the rectifier is started and charges
batteries over a charger. In bypass mode, loads are powered by the bypass
Issue 01 (2020-11-30) Copyright © Huawei Technologies Co., Ltd.
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