Starting The Ups In Battery Mode - Huawei UPS5000-E Series User Manual

UPS5000-E-(20 kVA-160 kVA)
User Manual (Low voltage)
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 Open the upstream mains input and bypass input switches.
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5.3 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 module 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.
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Issue 03 (2020-04-27)
Figure 5-8 Abnormal bypass
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 step 1.
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