Starting The Ups In Battery Mode; Transferring To Bypass Mode - Huawei UPS5000-E-FM Series User Manual

UPS5000-E-(25 kVA-125 kVA)-FM
User Manual
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5.3 Starting the UPS in Battery Mode

Procedure
Step 1 Use a multimeter to check that the sum of the absolute voltage of the negative battery string
and the voltage of the positive battery string is greater than a certain value (2 x Number of
cells) to ensure that the batteries are connected properly.
Step 2 Open the mains and bypass input circuit breakers. If the mains and bypass have no input,
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 sum of the absolute voltage of the negative battery string and the
voltage of the positive battery string is greater than a certain value (2 x Number of cells), the
batteries are connected properly.
Step 4 Press and hold down the BATT start button on the bypass module for at least 2 seconds.
Figure 5-15
enters the battery cold start status. The LCD displays the Huawei logo and an initialization
progress bar.
Figure 5-15 Battery startup button
Step 5 After LCD initialization is complete, start the inverter.
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5.4 Transferring to Bypass Mode

Issue 06 (2019-12-13)
shows the position of the battery cold start button. The system automatically
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