UPS5000-H-1200 kVA
User Manual (100 kVA Power Modules)
2 Overview
Issue 01 (2020-07-15)
Copyright © Huawei Technologies Co., Ltd.
21
Figure 2-6
UPS conceptual diagram in normal mode
2.4.2.2 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 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.