Working Modes; Normal Mode; Bypass Mode - Huawei UPS5000-E-200K-SM User Manual

UPS5000-E-(200 kVA-300 kVA)
User Manual (50 kVA Power Modules)

2.2.2 Working Modes

2.2.2.1 Normal Mode

In normal mode, the rectifier converts AC power into DC power, and then the
inverter converts the DC power into high-precision AC outputs. The conversions
protect loads from interference such as input harmonics, glitches, and voltage
transients.
Figure 2-3 UPS conceptual diagram in normal mode

2.2.2.2 Bypass Mode

The UPS automatically transfers to bypass mode upon detecting power module
overtemperature, overload, or other faults that may cause the inverter to shut
down. In bypass mode, loads are powered by the bypass module. The bypass
power supply is not protected by the UPS and therefore is prone to the mains
outage, abnormal AC voltage waveform, or abnormal frequency.
Issue 17 (2023-07-10) Copyright © Huawei Digital Power Technologies Co., Ltd.
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