Huawei UPS5000-E-30 kVA-FM - Cold-Starting the UPS Using Batteries

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After you shut down the inverter, the Bypass mode alarm is displayed on the LCD.
Figure 4-5 Abnormal bypass
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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".
● On the WebUI
Choose Monitoring > UPS System > Running Control, and click Inv. OFF.
Step 2 After you shut down the inverter, turn
o the output switch or external output
power distribution switch in the UPS output PDC.
Step 3 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 4 Turn
o the external input switches and UPS internal switches in the following
sequence:
1. Turn o the internal mains input switch, bypass input switch, and output
switch of the UPS.
2. Turn
o the upstream mains input and bypass input switches for the UPS.
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● If the inverter needs to shut down to transfer the UPS to bypass mode, check that the
UPS has not generated an alarm and perform Step 1.
● If you need to shut down the UPS, perform all of the preceding steps.
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4.3 Cold-Starting the UPS Using Batteries
Lead-Acid Battery Cold Start
1. Ensure that batteries have been connected properly. Use a multimeter to
check that the absolute voltages of positive and negative battery strings are
UPS5000-E-(30 kVA–120 kVA)-FM
User Manual 4 Operations
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