UPS5000-E-(400 kVA-600 kVA)
User Manual (60 kVA Power Modules)
2 Overview
Issue 05 (2019-12-24)
Copyright © Huawei Technologies Co., Ltd.
17
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.
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. The
bypass power supply is not protected by the UPS which means it may be affected by mains
outage, and incorrect AC voltage or frequency.