Starting The Ups In Battery Mode - Huawei UPS5000-A User Manual

UPS5000-A-(30 kVA-120 kVA) User Manual
User Manual
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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
off.
Step 3 After the inverter shuts down, turn off the downstream output power distribution
switch.
Step 4 Turn off the battery string switch. If there are multiple battery strings, turn off the
general switch between battery strings and the UPS and then the switch for each
battery string.
Step 5 Turn off the upstream mains and bypass input power distribution switches.
----End

4.3 Starting the UPS in Battery Mode

Procedure
Step 1 Ensure that batteries have been connected properly. Use a multimeter to check
that the absolute voltages of positive and negative battery strings are greater than
a certain value (Single battery voltage x Number of batteries in the battery string).
Step 2 Turn off the mains and bypass upstream input switches, and turn on the battery
circuit breaker. If there are multiple battery strings, turn on the circuit breaker for
each battery string and then the general circuit breaker between the battery
strings and the UPS.
Step 3 Use a multimeter to measure the positive and negative battery string voltages at
the UPS battery input terminal. If the absolute values of the voltages are greater
than a certain value (single battery voltage x number of batteries in the battery
string), the batteries are connected properly.
Step 4 Press and hold down the BATT START button on the bypass unit for at least 2
seconds. The system automatically enters the battery cold start status. The MDU
displays the initialization progress bar.
Issue 15 (2022-11-15)
Figure 4-5 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.
NO TE
After you shut down the inverter, the Bypass mode alarm is displayed on the MDU.
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