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

UPS5000-A-(400 kVA-600 kVA)
User Manual (60 kVA, PF=0.9)
Configuration
Dual-bus system

2.7.1 Single UPS

The UPS5000-A is a series of transformerless tower-mounted UPSs. This series uses
the unit-level design for its power part with an embedded maintenance bypass
switch, enabling maintenance with power on.

2.7.2 Parallel System

In a parallel system, mains input, bypass input, and AC output terminals of UPSs
are connected in parallel, separately. Energy control modules (ECMs) on different
UPSs are connected over parallel cables to synchronize UPS outputs to supply
power to loads. If one UPS fails, the other UPSs continue supplying power to
loads.
Figure 2-26 Conceptual diagram of an N+X parallel system
Issue 06 (2022-01-27)
Application Scenario
Supplies power to important loads in large- and medium-
sized equipment rooms, data centers, and other places that
require high reliability.
In addition to advantages of common parallel systems, the
dual-bus system is free from bottleneck failures, but its
configuration is complex.
NO TE
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.
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