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UPS5000-H-800 kVA-NTN
Quick Guide (480 V, 100 kVA Power Modules)
Step 14 Turn on the general output switch (general load switch).
----End
3.3 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.
----End
3.4 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.
----End
3.5 Commissioning a Dual-Bus System
Context
The dual-bus system consists of one master and one slave BSC system. You can
specify one master and one slave BSC system (UPSs in the same system cannot be
set to both master and slave BSC systems) during initial startup, and change the
settings under the guidance of maintenance engineers when needed. Set the BSC
master and slave systems to master and slave modes respectively.
Issue 01 (2023-03-20)
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.
Copyright © Huawei Technologies Co., Ltd.
3 Parallel System Commissioning
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