Huawei UPS5000-E-30 kVA - Transferring to Bypass Mode; Setting ECO Mode

Lithium Battery Cold Start
Step 1 Check that the cables between the UPS and the lithium battery cabinet are
properly connected.
Step 2 Switch
o the UPS input circuit breaker QF1.
Step 3 Power on the lithium battery cabinet. For details, see the user manual for the
lithium battery cabinet.
Step 4 Use a multimeter to measure the voltages of the positive and negative battery
strings connected to the UPS battery input terminals. If the measured values are
consistent with the voltages displayed on the System Status screen of the lithium
battery cabinet, the batteries are properly connected.
Step 5 When the green indicator on the BCU in the lithium battery cabinet blinks at 1 Hz
or is steady on, press and hold down the BATT START button on the UPS bypass
module for more than 2 seconds. The system automatically enters the battery cold
start state. The MDU displays the initialization progress bar.
Step 6 After the MDU initialization is complete, start the inverter.
----End
5.5 Transferring to Bypass Mode
NO TICE
Before shutting down the inverter, ensure that the bypass is normal. If the bypass
is not normal, after the inverter is shut down, the UPS supplies no power, and the
loads shut down.
Shut down the UPS inverter. Shut down the inverter on the LCD, and the UPS
transfers to bypass mode.
NO TE
If the inverter is shut down when the input voltage or frequency exceeds the specied
threshold, the UPS supplies no power, and the loads shut down.
5.6 Setting ECO Mode
Context
● The UPS is set to non-ECO mode by default. Set the UPS to ECO mode when
it is required.
● In ECO mode, the bypass takes priority over the inverter in supplying power. If
the bypass is disconnected, the UPS transfers to inverter mode. The transfer
time is less than 4 ms in typical working conditions and equal to or less than
20 ms in poor working conditions.
● The ECO mode delivers a higher
eciency.
UPS5000-E-(30 kVA–180 kVA)
User Manual (Integrated UPS) 5 Operations
Issue 02 (2022-12-30) Copyright © Huawei Digital Power Technologies Co., Ltd. 132