Setting The S-Eco Mode - Huawei FusionPower6000 UPS5000-H-600 kVA-FT User Manual

UPS5000-H-600 kVA-FT(M)
User Manual (FusionPower6000)

5.3.1 Setting the S-ECO Mode

Prerequisites
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Context
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Issue 02 (2024-01-05)
Only the three-phase four-wire 380 V AC/400 V AC/415 V AC (line voltage)
model supports the S-ECO mode.
The system is working in inverter mode.
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 power supply 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 rate is less than 10%, 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 power
factor is less than 0.5, or the load rate is less than 10%), 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.
– S-ECO mode VFD: When the input voltage is of good quality and
fluctuates slightly and the load is mainly linear, the load current THDi is
less than the preset value (5% by default) and the power factor is greater
than 0.95. In this case, the UPS automatically enters the S-ECO mode
VFD, provides power supply at efficiency up to 99%, and achieves good
input current THDi. When the bypass input is disconnected or the voltage
is abnormal, the UPS continuously transfers to normal mode.
– S-ECO mode VI: When the input voltage is of good quality and fluctuates
slightly and the load is mainly non-linear, the load current THDi is greater
than the preset value (5% by default) and the power factor ranges from
0.5 to 0.95. In this case, the UPS automatically enters VI mode. The
inverter compensates for harmonics and reactive power of the load
current, which delivers the 98.5% efficiency together with a higher input
power factor and a lower input current THDi. When the bypass input is
disconnected or the voltage is abnormal, the UPS uninterruptedly
transfers to normal mode.
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5 Single UPS Commissioning
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