UPS5000-A-400 kVA
User Manual (50 kVA, PF=0.9)
5 Operation Guide
Issue 03 (2020-01-10)
Copyright © Huawei Technologies Co., Ltd.
161
Figure 5-22
Battery cold-startup button
Step 5
After LCD initialization, start the inverter.
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5.4 Starting the UPS in Battery Mode
Before you shut down the inverter, ensure that the bypass operates properly. If the bypass
becomes faulty, the system provides no output for loads after you manually shut down the
inverter.
Shut down the inverter over the LCD or WebUI. After the inverter is shut down, the UPS
transfers to bypass mode.
When the bypass input voltage or frequency exceeds the system threshold, the system provides no
output for loads after you shut down the inverter.
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 unit takes precedence over the power
unit in supplying power to loads. When the bypass unit is disconnected, the UPS
switches to the power unit. The switchover time is less than 2 ms for typical working
conditions and is 10 ms under harsh working conditions.