UPS2000-A-(6 kVA-10 kVA)-RTL
User Manual
2 Overview
Issue 07 (2020-01-10)
Copyright © Huawei Technologies Co., Ltd.
16
No.
Meaning
Description
3
UPS subcategory
A series
4
Output capacity
6K: 6 kVA
10K: 10 kVA
5
UPS type
RT: rack-mounted or tower-mounted
6
Long backup time
model
L: long backup time model, using external large-capacity
batteries that provide long backup time.
2.2 Working Principle
2.2.1 Conceptual Diagram
shows the UPS conceptual diagram.
Figure 2-2
UPS conceptual diagram
2.2.2 Working Modes
The UPS has the following working modes:
Normal mode
When the mains is normal, the rectifier boosts the mains input voltage and converts the
AC power into stable DC power for the inverter, and the mains charges batteries over a
charger. Then the inverter converts the DC power into stable AC power, which is
supplied to loads.
Battery mode
When the mains is abnormal or disconnected, the rectifier step-up transformer boosts the
DC power supplied from batteries. Then the inverter converts the DC power into stable
AC power for powering loads.
Bypass mode
The mains supplies power directly to loads after filtering. The UPS transfers to bypass
mode when overload, overtemperature, or faults occur. This mode does not provide
battery backup capability.
ECO mode