UPS5000-A-30 kVA & 40 kVA & 80 kVA
User Manual
Copyright © Huawei Technologies Co., Ltd.
Figure 2-5 UPS conceptual diagram in battery mode
2.2.2.4 Maintenance Bypass Mode
The current flows through the maintenance bypass, instead of the power unit or bypass unit.
UPS maintenance can be performed in this mode.
Figure 2-6 UPS conceptual diagram in maintenance bypass mode
2.2.2.5 ECO Mode
The economy control operation (ECO) mode is an energy-saving mode, which you can
configure on the liquid crystal display (LCD) or web user interface (WebUI). In ECO mode,
when the bypass input voltage is within the ECO voltage range, the bypass combined switch
turns on, and the bypass supplies power. When the bypass input voltage is beyond the ECO
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