Shutting Down And Powering Off A Parallel System; Performing Epo - Huawei UPS5000-H-1200K-NT User Manual

UPS5000-H-(1200 kVA-1600 kVA)
User Manual (100 kVA Power Module)
4.
Step 14 Turn on the general output switch (general load switch).
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6.2 Shutting Down and Powering Off a Parallel System

Procedure
Step 1 Choose Common Functions > Paral. Inv. OFF on the LCD. The system transfers to
bypass mode.
Step 2 Turn off the general output switch (general load switch) and the external output
power switch, battery switch, external mains input power switch, and external
bypass input power switch for each UPS.
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6.3 Performing EPO

Procedure
Step 1 Press the EPO switches connected to the dry contact cards on all UPSs one by one
or press the general EPO switch.
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Issue 07 (2022-11-29)
where each battery switch is located, and then measure the voltage where the
general battery switch is located).
CA UTION
Exercise caution when performing operations with power on.
Ensure that batteries are properly connected (the No battery alarm in the
active alarm list of all LCDs disappears within 2 minutes and no other alarms
are generated).
NO TE
● In a parallel system, it is recommended that all racks have the same capacity. When the
system is unloaded, the load rate is displayed on the LCD of the UPS that starts first.
The load rate is not displayed after all UPSs start.
● If you connect UPSs in parallel for the first time, perform all the preceding steps. If you
need to restart the inverters after the parallel system powers off or if the parallel system
needs to transfer from bypass mode to inverter mode, you only need to tap Paral. Inv.
ON on the LCD screen Common Functions.
NO TE
● Perform only step 1 if you only need to shut down the UPS inverters to switch the
system to bypass mode without powering off loads.
● If you need to power off the entire UPS system, perform all the preceding steps.
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6 Parallel System Commissioning
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