Huawei UPS5000-A-30 kVA - Page 72

NO TICE
After the inverter is shut down, if the bypass is normal, the UPS transfers to
bypass mode; if the bypass is abnormal, the UPS supplies no power. Before
shutting down the UPS, ensure that all customer equipment (namely, loads) have
been shut down.
Procedure
Step 1 Shut down the inverter.
● LCD
On the main menu screen, tap Control. On the displayed login screen, enter a
password.
Tap Inv. OFF, press
to shut down the inverter.
Figure 2-5 Shutting down the inverter
● WebUI
On the WebUI, choose Monitoring > UPS System > Running Control and
click Inv. OFF. In the displayed dialog box, click OK to shut down the inverter.
On the old WebUI, choose Monitoring > Control > System Commands and
Tests and click Inv. OFF. In the displayed dialog box, click OK to shut down
the inverter.
Step 2 After the inverter shuts down, if the bypass is normal, the UPS works in bypass
mode; if the bypass is abnormal, the UPS supplies no power, and the loads power
o.
NO TE
After you shut down the inverter, the Bypass mode alarm is displayed on the MDU.
Step 3 After the inverter shuts down, turn o the downstream output power distribution
switch.
Step 4 Turn o the battery string switch. If there are multiple battery strings, turn o the
general switch between battery strings and the UPS and then the switch for each
battery string.
Step 5 Turn
o the upstream mains and bypass input power distribution switches.
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UPS5000-A-(30 kVA–120 kVA)
Quick Guide 2 Single UPS Commissioning
Issue 14 (2022-09-06) Copyright © Huawei Digital Power Technologies Co., Ltd. 65