Emerson NX manual Electrical specifications, Physical specifications, Specifications

Specifications

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
						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
Standards & Conformities				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

39 Liebert®NX™