Vertiv Liebert EXM - Page 84

Vertiv™ | Liebert® EXM
™
50-250kVA, 480V, 60Hz User Manual | 76
Table 21 Rectifier input
Parameter 50-250kVA
AC Input Parameters 60Hz, 3-Phase, 3-Wire Plus Ground
Rated AC Voltage 480
Input Voltage Range,
Startup/Operating
408-528VAC
Input Voltage Range, Operating
*
288-408VAC
Frequency 60Hz (40-70Hz Range)
Power Factor 0.99 Full Load, 0.98 Half Load
UPS Capacities (kVA) 50/100/150/200/250
THDi
5% Full Load (non-linear), 3% Full Load
(linear)
* Derated operation for reduced input voltage: 480V Operation (288-408VAC). Contact factory for detailed information about derated
operation.
Table 22 Battery DC intermediate circuit
Parameter 50-250kVA
Battery Bus Voltage 432
Number of Lead-Acid
Cells
216 = (36 x 6 cell [12V] blocks), nominal
Float Voltage 2.25V/cell, selectable from 2.2 - 2.3V/cell
Temperature
Compensation
-3.0mV/°C, selectable from 0 to -5.0mV/°C around 77°F
(25°C) or
86°F (30°C) or inhibit
Ripple Voltage ≤1%
Ripple Current ≤5%
Equalize Charge
Voltage
2.35 V/cell (selectable from 2.30-2.40V/cell)
Equalize Charge
Control
• Float-equalize current trigger 0.050 C10 (selectable 0.030-
0.070)
• Equalize-float current trigger 0.010 C10 (selectable 0.005-
0.025)
24 hr safety time-out (selectable 8-30 hr)
Equalize charge mode inhibit also selectable
End of Discharge 1.67 V/cell (selectable from 1.67-1.750V/cell)
Battery Charge
Operation
Constant current and constant voltage charge mode
Programmable auto trigger or inhibit of equalize mode
Battery Charging Power
*
Maximum Current
UPS (kVA) 50-250
Battery Charging Power, kW: 5.5kW per 50kVA power module
Maximum Charging Current, A: 10A per 50kVA power module
* Battery charger power and current are both proportionately reduced for derated UPS models.