Figure 6-4 Parallel cable connections in a dual-bus parallel system
Step 2 Commission the UPSs.
● If the dual-bus system consists of single UPS systems, commission each UPS.
For details, see 5.1 Powering On and Starting the UPS.
● If the dual-bus system consists of parallel systems, commission each
independent parallel system. For details, see 6.1 Starting a Parallel System.
Step 3 Set each UPS in the system that is dened as the master system to BSC master
system.
1. On the LCD, choose System Info > Settings > System Settings and set BSC
mode to Standard BSC
2. On the LCD, choose System Info > Settings > System Settings and set BSC
master/slave mode to BSC master system
Step 4 Set each UPS in the system that is dened as the slave system to BSC slave
system.
1. On the LCD, choose System Info > Settings > System Settings and set BSC
mode to Standard BSC
2. On the LCD, choose System Info > Settings > System Settings and set BSC
master/slave mode to BSC slave system
Step 5 Check that the RMS phase voltage dierence between UPS systems is less than 5
V.
----End
UPS5000-A-(30 kVA-120 kVA)
User Manual 6 Parallel System Commissioning
Issue 17 (2024-02-21) Copyright © Huawei Digital Power Technologies Co., Ltd. 138
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