Step 3 Operate the UPSs one by one to set the number of parallel output UPSs. Press
SELECT, go to the setting screen, and set parallel system parameters. Press ON/
MUTE+SELECT to return to the standby screen.
Number of Parallel UPSs Description
● Default value: 1
● Value range: 1–4
Step 4 Perform the startup operation on each UPS. The UPS parallel system transfers to
normal mode.
Step 5 After checking that the system runs properly, switch on the general output circuit
breaker Q and branch output circuit breakers for the parallel system to start loads
one by one.
----End
5.1.1.3.2 Shutting Down a Parallel System
Shutting Down a Single UPS in the Parallel System
Step 1 Perform the shutdown operation for a UPS in the parallel system. Then the UPS
shuts down and generates no output. Other UPSs work without being
aected.
Step 2 Disconnect the parallel communications cables of the UPS to be shut down, and
then switch o the AC input circuit breaker (K
m
1 or K
m
2) and AC output circuit
breaker (Q1 or Q2) for the UPS.
FusionModule800 Smart Small Data Center
User Manual 5 Power-On Commissioning
Issue 01 (2021-02-05) Copyright © Huawei Technologies Co., Ltd. 255
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