UPS5000-E-(40 kVA-320 kVA)
User Manual
5 Operations
Issue 10 (2015-09-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
163
Step 5
After LCD initialization, start the inverter by following
5.1 Powering On and Starting the UPS
If no input is available, perform battery cold startup.
----End
5.4 Transferring to Bypass Mode
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 shut down.
5.2 Shutting Down and Powering Off the UPS
inverter over the LCD or WebUI. After you shut down the inverter, the UPS transfers to
bypass mode.
If you shut down the inverter when the input voltage or frequency exceeds the specified threshold, the
UPS supplies no power, and the loads shut down.
5.5 Setting ECO Mode
Context
The UPS is set to non-ECO mode by default. Set the UPS to ECO mode when energy
saving is required.
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 2 ms for typical working
conditions and is 10 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.
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 UPS
Step 2
Select a value (
±5%
,
±6%
,
±7%
,
±8%
,
±9%
, or
±10%
) from the
ECO voltage range