Bypass Mode; Battery Mode - Huawei UPS5000-H User Manual

UPS5000-H-(400 kVA-800 kVA)
User Manual (100 kVA Power Modules)
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
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.
Figure 2-6 UPS conceptual diagram in bypass mode

2.5.3 Battery Mode

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