58 User Manual 10H52192UM60 - Rev. 1 - 09/2011
Liebert NX Product Specifications
8.4 Electrical Characteristics (Input Rectifier)
Table 8-4 Rectifier AC Input (Mains)
Item Unit
Rated power (kVA)
30 40 60
Rated AC input voltage
1
Vac 380/400/415 (3-phase and sharing neutral with the bypass input)
Input voltage range
2
Vac 228 to 477
Frequency
2
Hz 50/60 (tolerance: 40 Hz to 70 Hz)
Power factor kW / kVA, full load (half load) 0.99 (0.98)
Input power kVA rated
3
(maximum
4
) 32 (36) 42 (51) 63.5 (72.5)
Input current A rated
3
(maximum
4
) 46 (53) 61 (75) 92 (106)
Harmonic current distortion THDI% FL 5
Duration of progressive power
walk-in
sec
5 sec to reach full rated current
(selectable 1 sec through 5 sec in 1-second intervals)
Note:
1. Rectifiers operate at any of the rated supply voltages and frequencies without further adjustment.
2. At 305 V mains input, the UPS maintains the specified output voltage at rated load without discharging a previously charged battery.
3. IEC62040-3/EN50091-3: At rated load and input voltage 400 V, battery charged.
4. IEC62040-3/EN50091-3: At rated load and input voltage 400 V, battery charging at maximum rated power
8.5 Electrical Characteristics (Intermediate DC Circuit)
Table 8-5 Battery
Item Unit
Rated power (kVA)
30 40 60
Battery bus voltage Vdc Nominal: 384 (VRLA float charge is 436 V); range: 300 to 576
Quantity of lead-acid blocks
Nominal 32 = [1 block (12 V)]
Maximum 40 = [1 block (12 V)]
Minimum 30 = [1 block (12 V)]
Float voltage V/cell (VRLA)
2.27 (selectable between 2.2 V/cell and 2.3 V/cell)
Constant current and constant voltage charge mode
Temperature compensation
mV/°C/cl
3 (selectable between 0 and 5
mV/°C/cell
, or inhibit)
Temperature compensation
central point
°C 25 (selectable between 20 and 30°C)
Ripple voltage % V float
≤
1
Ripple current % C
10
≤
5
Boost voltage V/cell (VRLA)
2.35 (selectable between 2.3 V/cell and 2.4 V/cell)
Constant current and constant voltage charge mode
Programmable automatic trigger or inhibit of boost mode
Boost control
Float-boost current trigger 0.050 C
10
(selectable between 0.001 and 0.070)
Boost-float current trigger 0.010 C
10
(selectable between 0.001 and 0.025)
24 h safety time timeout (selectable between 8 h and 30 h)
Boost mode inhibit also selectable
EOD voltage
V/cell (VRLA)
Lower limit: 1.63 (selectable between 1.60 V/cell and 1.67 V/cell)
Upper limit: 1.75 (selectable between 1.67 V/cell and 1.85 V/cell)
Battery charging power
1
and max charging current
(adjustable)
2
kW 4.5 6 (9) 9
A 11 14.7 (22) 22
Note:
1. At low input voltage the UPS recharge capability increases as the load decreases (up to the maximum capacity indicated).
2. Max currents listed are for EOD voltage of 1.67 V/cell for 240 cells
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