Single Ups; Parallel System - Huawei UPS5000-A User Manual

UPS5000-A-(60 kVA-120 kVA)-H
User Manual

2.4.1 Single UPS

The UPS5000-A is a high frequency tower-mounted UPS. It uses a unit-level design to handle
power functionality, and provides an embedded maintenance bypass switch to ensure
maintenance with power on.

2.4.2 Parallel System

In a parallel system, the mains input, bypass input, and AC output terminals between cabinets
are connected in parallel. Energy control modules (ECMs) on each UPS are connected over
parallel cables. The parallel connections synchronize the UPS outputs to supply power to
loads. If one UPS fails, the other UPSs continue supplying power to loads.
Issue 05 (2020-01-10)
Configuration Application Scenario
Parallel system Supplies power to important loads in small- and medium-sized data
centers. It features high availability and strong transient overload
capability.
Dual-bus system The dual-bus system is suitable for scenarios where high availability
requirements are posed for power supply. The dual-bus system
supplies power to important loads in large- and medium-sized
equipment rooms and data centers.
In addition to common parallel system advantages, the dual-bus
system also provides outstanding availability and eliminates
bottleneck failures. However, configuration of the dual-bus system is
complex.
A 1+1 parallel system is a typical configuration. You can set the number of requisite UPSs and
redundant ones on the LCD or WebUI.
Copyright © Huawei Technologies Co., Ltd.
Figure 2-2 shows the conceptual diagram of a single UPS.
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