Vertiv
™
|
Liebert
®
NX
™
225-600kVA Installation Manual | Rev. 8 | 07/2017
37
5.0
SPECIFICATIONS
Table 7
Liebert NX UPS specifications
Model Size
UPS Rating, kVA
225
250
300
400
500
600
Input Parameters
Input Voltage to Rectifier, VAC
480V 3-phase, 3-wire
Input Voltage to Bypass, VAC
480V 3-phase, 3-wire
Input Voltage Range, VAC
+10% to -30%
(The UPS will operate at voltages down to -12.5% of nominal at 100% load
without discharging the battery. The UPS will operate without discharging the
battery at 70% of full nominal load with voltage down to -30% of nominal.)
Input Frequency, Hz
60
Permissible Input Frequency Range, Hz
55 to 65
Reflected Input THDi, Nominal Voltage, Full Load, %
<5%
Power Walk-In, sec
1 to 90 (selectable) in 1 sec. Increments
(Walk-in begins after a 7-second source qualification time. Special settings
are available to permit shorter walk-in times for use with flywheels. Consult
factory for details.)
Battery and DC Parameters
Battery Type
VRLA (Valve Regulated Lead Acid) or FLA (Flooded Lead Acid)
Nominal Battery Bus, VDC
480V
Battery Float Voltage, VDC
540V
Minimum End of Discharge Voltage, VDC
396V (for VRLA / FLA)
DC Ripple Voltage in Float & Const V Ch. Mode, %
<1 (RMS value) < 3.4% Vpp
Temperature Compensated Battery Charging
Optional (with temperature probe)
Output Parameters
Inverter Type
IGBT-based Sine-Sine PWM Controlled
Output Power, kW
225
250
300
400
500
600
Output Voltage, VAC
480V 3-ph, 3-wire
Output Voltage Regulation, %
< 1% (3-phase RMS average)
Output Voltage Regulation (100% Unb. Load)
< 2% (3-phase RMS average)
Output Frequency, Hz
60
Output Frequency Regulation
Synchronized to bypass: ±1.2 Hz (1.2Hz default setting, adjustable up to ±
3.6Hz by factory service personnel)
Synchronized to internal clock ±0.06Hz
Output THDv Linear Load at Nominal Voltage, %
<2
Output THDv at Nominal Voltage Including a 100kVA Non
Linear Load per EN 62040-3, %
2.5% (max)
Capacity to Handle High Crest Factor Load
3:1
Unbalance Loads Current Capacity
100% of nominal phase current
Physical Parameters and Standards, in (mm)
Width, With Static Bypass
53.4 (1356)
90.7 (2304)
Depth
33.7 (856)
Height
78.6 (1996)
Weight, Unpackaged, approximate, lb. (kg)
2,450 (1,110)
4450 (2019)
Maximum Heat Dissipation, Full Load, BTU/hr
41,000
45,000
54,000
72,000
90,000
108,000
Color
Black (ZP-7021)
Front Door Opening (for serviceability)
More than 90°
Degree of Protection for UPS Enclosure
IP 20 (with and without front door open)
Minimum Clearance, Top, in (mm)
24 (610)
