Liebert NXC 40kVA - Electrical Characteristics (Input Rectifier); Electrical Characteristics (Intermediate DC Circuit); Electrical Characteristics (Inverter Output)

82 Chapter 11 Specifications
Liebert NXC 30kVA And 40kVA UPS User Manual
11.4 Electrical Characteristics (Input Rectifier)
Table 11-4 Rectifier AC input (mains)
Item Unit
Rated power (kVA)
30kVA
40kVA
Rated AC input voltage
1
Vac
380/400/415, 3-phase 4-wire (+PE) TN/TT power distribution system
Input voltage range
2
Vac
305 ~ 477
Frequency
2
Hz
50/60 (range: 40 ~ 70)
Power factor
kW/kVA, full load
(half load)
0.99 (0.98)
Input current
A, rated
3
50
64
Harmonic current distortion THDI% FL
Linear full load < 4% (battery float
charge)
Non-linear full load < 6% (battery
boost charge)
Linear full load < 4% (battery float
charge)
Non-linear full load < 6% (battery boost
charge)
Duration of progressive
power walk-in
s 5s to reach full rated current (selectable 10s through 25s in 5-second intervals)
Note:
1. Rectifiers operate at any of the rated supply voltages and frequencies without further adjustment.
2. At 305V input mains the UPS maintains the specified output voltage at rated load without discharging a battery.
3. IEC62040-3/EN50091-3: at rated load and input voltage 400V, battery fully charged
11.5 Electrical Characteristics (Intermediate DC Circuit)
Table 11-5 Battery
Item Unit
Rated power (kVA)
30kVA
40kVA
Quantity of lead-acid
blocks
Block 32, 34, 36, 38, 40 (12Vdc)
Float voltage V/cell (VRLA)
2.27 (selectable from 2.2V/cell to 2.3V/cell)
Constant current and constant voltage charge mode
Temperature
compensation
mV/°C/cl –3.0 (selectable from 0 to –5.0 around 25°C or 30°C, or inhibit)
Ripple voltage (float
charge)
% ≤ 1.414%
Boost voltage V/cell (VRLA)
2.35 (selectable from 2.3 to 2.4)
Constant current and constant voltage charge mode
Boost control
Float-boost current trigger 0.050C
10
(selectable from 0.001 to 0.070)
Boost-float current trigger 0.010C
10
(selectable from 0.001 to 0.025)
24h safety time timeout (selectable from 8h to 30h)
Boost mode inhibit also selectable
EOD voltage
V/cell (VRLA)
1.60 ~ 1.85
Battery Boost charge V/cell
2.35
Constant current and constant voltage charge mode
Programmable automatic trigger or inhibit of boost mode
11.6 Electrical Characteristics (Inverter Output)
Table 11-6 Inverter output (to critical load)
Item Unit
Rated power (kVA)
30kVA
40kVA
Rated AC voltage
1
Vac
380/400/415 (3-phase 4-wire, with neutral reference to the bypass neutral)
Frequency
2
Hz
50/60