Emerson Liebert NXE 20kVA NXF00203 User Manual

Product codes
NXF00203
Page of 8
Next Generation UPS for new levels 
of modern equipment protection
The Liebert NX 
An Outstanding Performer
Today’s advanced digital computing, com-
munications, process control and medical
systems require power protection that is
just as innovative. These systems, however,
face many of the traditional threats to their
availability - foremost among them is a lack
of high quality power required to operate
sensitive electronics.
The system’s advanced true-online, double
conversion topology features a digital
signal processor (DSP) controlled IGBT 
rectifier and a digital signal processor 
(DSP) controlled IGBT inverter.
DSP Power Factor Corrected IGBT Rectifier 
The rectifier provides ≥ 0.99 Input Power
Factor (PF), less than 3% of Input Current
Total Harmonic Distortion (THDi) and the
widest input voltage window and frequency
tolerances.
0.99 Power Factor ensures maximization of
active power leading to reduced electricity
usage,  minimization of cables and backup
Pf=0.9 leading
rated kW
kW
1.0
0.8
0.6
0.4
0.2
kVAR leading
kVAR lagging
Pf=0.8 lagging
rated kW
Leading Pf
de-rate profile
Pf=0.5 lead,upper
limitreduced kW
Pf=0.5 lagging,lower
limitreduced kW
Rated kW limit
generator sizing requirements leading 
to reduced investment costs.
Low input current THDi enables avoiding
damage to other loads connected to 
the upstream power distribution bus. 
Wide input voltage window and frequency
tolerances contribute to higher system
availability by minimizing battery usage.
DSP Controlled IGBT inverter
Advanced inverter control technology 
provides the highest output power quality,
ensuring very low output voltage THD 
and superior waveform to protect connec-
ted loads.
Emerson Network Power goal is solving
these challenges with a power solution that
combines high performance, compact size,
reliability and cost-efficiency.
Emerson Network Power Liebert NX is the
Next Generation of true-online, double
conversion digital UPS. Designed to meet
the high availability power needs of a wide
It operates under a wide variety of condi-
tions, handling 100% non-linear loads with
3:1 crest factor, as well as 100% unbalanced
loading.
The inverter control enables Liebert NX to
be suitable for the widest ranges of loads
required by the market; delivering full active
power rated kW up to 0.9 leading PF loads.
variety of applications, the Liebert NX 
combines innovation and simplicity and
low cost of ownership. The result is a power
system that delivers both reliability and 
a return on investment beyond what has
been traditionally offered.