Huawei FusionPower6000 UPS5000-H-600 kVA-FT User Manual page 35

UPS5000-H-600 kVA-FT(M)
User Manual (FusionPower6000)
Table 2-3 Working modes
Mode Energy Flow
Normal
mode
Bypass mode
Battery mode
Source-share
mode
Issue 02 (2024-01-05) Copyright © Huawei Digital Power Technologies Co., Ltd.
Description
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 DC/DC. The conversions protect
loads from interference such as input
harmonics, glitches, and voltage
transients.
When the UPS detects that the power
module experiences overtemperature,
overload timeout, 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 DC/DC. 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.
If the utility power input is abnormal or
the rectifier becomes abnormal, the UPS
transfers to battery mode. The UPS
obtains DC power from batteries, and the
power is converted into AC output by the
inverter.
If the UPS works properly and the AC
input power of rectifiers is insufficient
(for example, the UPS input current is
limited due to low utility power voltage),
the UPS automatically transfers to
source-share mode. In this case, the UPS
obtains energy from both the utility
power and batteries, and the energy is
converted into AC outputs by the inverter.
2 Product Overview
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