UPS5000-H-1200 kVA
User Manual (100 kVA Power Modules)
2 Overview
Issue 01 (2020-07-15)
Copyright © Huawei Technologies Co., Ltd.
47
Figure 2-30
Conceptual diagram of a 1+1 parallel system
2.6.3 Dual-Bus System
A dual-bus system consists of two independent 1.2 MW systems. Each 1.2 MW system
consists of one or two 1.2 MW UPSs. One of the two UPS systems is a master system, and the
other is a slave system. The dual-bus system is highly reliable and is suitable for loads with
multiple input terminals. You can install an optional static transfer switch (STS) to start a bus
synchronization controller (BSC) provided in standard configuration. The UPS systems work
in inverter mode or bypass mode.