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Chapter 1 Introduction
9
Parameters of Liebert iTrust UPS are given in Table1-1
Capacity 20kVA 30kVA 40kVA 60kVA
Model UL33-0200L UL33-0300L UL33-0400L UL33-0600L
Input Voltage 380/400/415V(line-to-line voltage)
AC Power Input Three-phase three-wire
Power Factor >0.99
Harmonic Current <4%(Voltage distortion lower than 2% at rated load)
Voltage Range
+15%~-20%
Lowest operating voltage: -45%
Input current limiting
Input Current: <115%In for continuous operation; 115~140%In
for 5 minutes; 140~165%In for 1minute; Current limiting at
current over 165%In(In is the rated output current without
deration)
Rectifier
input
frequency range
50Hz
±
10%
Input Voltage 380/400/415V(line-to-line voltage)
Input Voltage Range
±
10%
AC Power Input Three-phase four-wire
Bypass input
Frequency range
50Hz
±
10%
Voltage regulation
(balanced load)
380/400/415V
±
1%
(
±
5% adjustable)
Voltage transient response
±
5%(0~100%linear load)
Transient recovery time <60ms
Voltage distortion(linear load)
THD<2%(line-to-neutral voltage)(battery float charge state,
rated balance load)
Voltage distortion(nonlinear
load)
THD<5%(line-to-neutral voltage)(battery float charge state,
rated balance load)
Power Factor 0.8(lagged)
Frequency Syn. Range
50Hz
±
2Hz
Frequency regulation(Battery
mode)
±
0.1%
Phase Displacement (Three-
Phase)
120
±
1
°
(balanced load or unbalanced load)
Voltage unbalance rate at
100% unbalance load
±
2%(battery float charge state)
Output
Frequency slew rate <1Hz/s