UPS5000-E-(50 kVA-300 kVA) 
User Manual (50 kVA Power Modules) 
 
Copyright © Huawei Technologies Co., Ltd. 
 
5.1.4 Powering On Loads 
Context 
After the inverter starts, the UPS works in normal mode. The Bypass mode alarm disappears. 
Procedure 
Step 1  After confirming that the battery strings are properly connected, close the battery string input 
circuit breaker. If there are multiple battery strings, close the circuit breaker for each battery 
string and then the general circuit breaker between battery strings and the UPS. The No 
battery alarm disappears from the MDU. 
Step 2  Close the UPS downstream output switch to supply power to the loads. 
----End 
5.1.5 (Optional) Setting Parameters for the BCB Box 
Prerequisites 
A BCB box is installed. 
Procedure 
Step 1  On the Settings > Dry Contact Set screen, set MUE05A connection to Enable, and set BCB 
connection [OL] and Battery breaker [STA] to Enable. 
Figure 5-6 BCB connection setting 
 
 
----End