UPS5000-E-(50 kVA-300 kVA) 
User Manual (50 kVA Power Modules) 
 
Huawei Proprietary and Confidential                                     
Copyright © Huawei Technologies Co., Ltd. 
 
Contents 
About This Document .................................................................................................................... ii 
1 Safety Precautions ......................................................................................................................... 1 
1.1 General Safety .............................................................................................................................................................. 1 
1.2 Electrical Safety ............................................................................................................................................................ 3 
1.3 Operating Environment................................................................................................................................................. 6 
1.4 Battery Safety ............................................................................................................................................................... 6 
1.5 Mechanical Safety ........................................................................................................................................................ 9 
1.6 Laying Out Cables ...................................................................................................................................................... 10 
2 Overview ....................................................................................................................................... 12 
2.1 Model Description ...................................................................................................................................................... 12 
2.2 Working Principle ....................................................................................................................................................... 13 
2.2.1 Conceptual Diagram ................................................................................................................................................ 13 
2.2.2 Working Modes ........................................................................................................................................................ 14 
2.2.2.1 Normal Mode ........................................................................................................................................................ 14 
2.2.2.2 Bypass Mode ........................................................................................................................................................ 15 
2.2.2.3 Battery Mode ........................................................................................................................................................ 16 
2.2.2.4 Maintenance Bypass Mode ................................................................................................................................... 17 
2.2.2.5 ECO Mode ............................................................................................................................................................ 18 
2.3 Product Introduction ................................................................................................................................................... 19 
2.3.1 Structure ................................................................................................................................................................... 19 
2.3.2 Power Module .......................................................................................................................................................... 24 
2.3.3 Bypass Module ........................................................................................................................................................ 25 
2.3.4 Control Module ........................................................................................................................................................ 27 
2.3.4.1 Overview .............................................................................................................................................................. 27 
2.3.4.2 ECM...................................................................................................................................................................... 27 
2.3.4.3 Dry Contact Card .................................................................................................................................................. 29 
2.3.4.4 (Optional) Backfeed Protection Card .................................................................................................................... 31 
2.3.4.5 (Optional) Dry Contact Extended Card ................................................................................................................ 31 
2.3.4.6 Monitoring Interface Card .................................................................................................................................... 31 
2.4 Typical Configurations................................................................................................................................................ 36 
2.4.1 Single UPS ............................................................................................................................................................... 37 
2.4.2 N+X Parallel System ............................................................................................................................................... 37