Starting The Ups In Battery Mode; Transferring To Bypass Mode - Huawei UPS5000-A-200K-ST User Manual

UPS5000-A-(200 kVA-800 kVA)
User Manual
Step 2 After the inverter shuts down, open the downstream output switch.
Step 3 Open the battery string circuit breaker. If there are multiple battery strings, open
the general circuit breaker between battery strings and the UPS and then open the
circuit breaker for each battery string.
Step 4 For a UPS in full configuration:
1.
2.
Step 5 For a UPS in standard configuration, open the upstream mains input and bypass
input switches.
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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 Open the upstream mains input and bypass input switches, and close the battery
circuit breaker. If there are multiple battery strings, close the circuit breaker for
each battery string and then the general circuit breaker between 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 LCD
displays the Huawei logo and an initialization progress bar.
Step 5 After LCD initialization, start the inverter on the LCD.
----End

4.4 Transferring to Bypass Mode

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.
Issue 05 (2020-04-27)
NO TE
If you need to shut down the inverter and transfer the UPS to bypass mode, check that the
UPS has not generated an alarm and perform
Open the UPS mains input switch, bypass input switch, and output switch.
Open the upstream mains input and bypass input switches.
NO TICE
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