Transferring To Maintenance Bypass Mode - Huawei UPS5000-H-1200K-NT User Manual

UPS5000-H-(1200 kVA-1600 kVA)
User Manual (100 kVA Power Module)
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 battery control unit 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 control 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

9.2 Transferring to Maintenance Bypass Mode

● You are advised to install a lock on the maintenance bypass switch.
● Strictly observe the following procedure to transfer the UPS to maintenance
● In maintenance bypass mode, the mains supplies power to the loads directly
Step 1 Ensure that the status signal cable of the maintenance bypass switch for external
power distribution is connected to MT/0V.
Figure 9-1 Maintenance bypass signal port (MT)
Step 2 Choose System Info > Settings > Dry Contact Set, set MUE05A connection to
Enable, and set PDC maintenance breaker [MT] to Enable.
Step 3 Shut down the inverter. Choose Common Functions > Inv. OFF. After the inverter
shuts down, the UPS transfers to bypass mode, and the Bypass mode alarm is
displayed on the LCD.
Step 4 Turn on the maintenance bypass switch for external power distribution. Then, the
PDC Maint. breaker closed and Bypass mode alarms are displayed on the LCD.
----End
Issue 07 (2022-11-29)
NO TICE
bypass mode. Otherwise, loads may power off.
over the maintenance bypass. If the mains is abnormal, the loads may power
off.
Copyright © Huawei Digital Power Technologies Co., Ltd.
9 FAQ
402