Emerson NX Manuel D’Utilisation
Specifications
39
Liebert
®
NX
™
Table 8
Electrical specifications
Input Parameters
Input Voltage to Rectifier, VAC, 3-phase, 3-wire
480V
Input Voltage to Bypass, VAC, 3-phase, 3-wire
480V
Input Voltage Range, VAC
+10% to -30%
Input Frequency, Hz
60
Permissible Input Frequency Range, Hz
55-65
Rectifier Power Walk-In, sec
1-90 (selectable) in 1 Sec. Increments
DC Parameters
Battery Type
VRLA (Valve Regulated Lead Acid)
or FLA (Flooded Lead Acid)
DC Bus Range, VDC
396-600
DC Float Voltage, VPC
2.27
End-Cell Voltage, VPC
1.65 (for VRLA / FLA)
DC Ripple Voltage in Float and Const V Ch. mode, %
<1 (RMS Value) < 3.4% Vpp
Output Parameters
Output Voltage, 3-phase, 3-wire
480V
Output Voltage Regulation, %
< 1% (3-Phase RMS Average)
Output Frequency, Hz
60
Output Frequency Regulation, %
± 0.1
Capacity to Handle Step Load, %
0-100 or 100-0
Voltage Displacement, ° el
120° ±1° el (With Unbalanced Load)
Compliance to FCC Class-A
Standard
Table 9
Physical specifications
Liebert NX Model Size
225
250
300
400
500
600
Physical Parameters and Standards, in (mm)
Width
53.4
90.7
Depth
33.7
Height
78.6
Weight, Unpackaged, approximate, lb. (kg)
2,450 (1,110)
4450 lb. (2019kg)
Maximum Heat Dissipation, Full Load, BTU/hr
41,000
45,000
54,000
72,000
90,000
108000
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)
24in (610mm)
Minimum Clearance, Back, In. (mm)
0
Minimum Clearance, Sides, In. (mm)
0
Location of Cable Entrance
Top or Bottom
Standards & Conformities
UL, 1778, 4th Ed.
CSA 22.2 107.3
FCC Part 15, Class A
IEC62040-2, Level 4, Criteria A
EN61000-4-3, Level 3, Criteria A
EN61000-4-6, Level 4, Criteria A
EN61000-4-6, Level 4, Criteria A
EN61000-2-2, Criteria A
EN61000-4-4, Level 4, Criteria A
ANSI C62.41, Category A3 &B3
ISTA Procedure 1H
WEEE