Transferring To Bypass Mode Manually; Setting The S-Eco Mode - Huawei UPS5000-H User Manual

UPS5000-H-(400 kVA-800 kVA)
User Manual (100 kVA Power Modules)

7.4 Transferring to Bypass Mode Manually

Before you shut down the inverter, ensure that the bypass is normal. If the bypass
is abnormal, after you shut down the inverter, the UPS supplies no power, and the
loads are powered off.
Shut down the inverter on the LCD or WebUI. The UPS automatically transfers to
bypass mode.

7.5 Setting the S-ECO Mode

Prerequisites
The UPS is working in inverter mode.
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If you shut down the inverter when the bypass input voltage or frequency exceeds the
specified threshold, the UPS supplies no power, and the loads are powered off.
By default, the system works in a mode other than S-ECO. To enable the
system to work in S-ECO mode, set the working mode to S-ECO mode.
In S-ECO mode, the bypass takes priority over the inverter in supplying power.
If the bypass fails, the UPS transfers to inverter mode.
Both a single UPS and a parallel system support S-ECO mode which ensures
higher efficiency.
To avoid frequent transfers between S-ECO mode and normal mode, do not
set S-ECO mode when the bypass input is unstable or is sensitive to load
changes.
When the load is less than 5%, the S-ECO mode does not present obvious
advantages so the S-ECO mode is not recommended.
Before setting S-ECO mode, ensure that the bypass is working properly.
In S-ECO mode, the UPS automatically selects the VFD, VI, or VFI working
mode in real time based on the combination of physical parameters such as
the load rate, load current THDi, load power factor, and real-time input
voltage waveform.
S-ECO mode VFI: When the input voltage is of poor quality and fluctuates
greatly (the voltage and frequency exceed the specifications, the PF is less
than 0.5, or the load rate is less than 5%), the UPS automatically transfers to
normal mode to avoid supplying power of poor waveforms to loads. The UPS
monitors the input voltage waveform in real time. When the input voltage
becomes normal, the UPS goes back to the S-ECO mode or other power
supply modes.
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