Huawei UPS5000-E User Manual page 229

UPS5000-E-(50 kVA-300 kVA)
User Manual (50 kVA Power Modules)





Procedure
Step 1 Manually shut down the inverter to transfer the UPS to bypass mode. For details, see
5.2 Shutting Down and Powering Off the
Step 2 Select a value (± 5%, ± 6%, ± 7%, ± 8%, ± 9%, or ± 10%) from the ECO voltage range
drop-down list box.
Figure 5-21 Setting ECO voltage range
Step 3 Set Working mode to ECO. Information indicating that the UPS works in ECO mode is
displayed on the LCD.
Issue 02 (2017-02-25)
When the UPS works in ECO mode, the bypass module takes precedence over the power
module in supplying power to loads. When the bypass module is disconnected, the UPS
switches to the power module. The switchover time is less than 4 ms for typical working
conditions and is 20 ms under harsh working conditions.
Both a single UPS and the parallel system support the ECO mode for higher efficiency.
To avoid frequent transfer between ECO mode and normal mode, do not set the ECO
mode when the bypass input is unstable or is sensitive to load changes.
ECO mode is not recommended when the load is less than 10%.
Before transferring the UPS to ECO mode, ensure that the bypass module works
properly.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
UPS.
5 Operations
Step 1 in
220