72 Chapter 11 Specifications
Liebert APM 90 Integrated Modular UPS User Manual
11.4
Electrical Characteristics (Input Rectifier)
Table 11-4
Rectifier AC input (mains)
Rated power (kW*)
Item
Unit
18
36
54
72
90
Rated AC input
voltage
1
Vac
380/400/415 (3-phase and sharing neutral with the bypass input)
Input voltage
tolerance
2
Vac 305
~
477; 304
~
228 (output derated below 80%)
Frequency
2
Hz
50/60 (tolerance: 40Hz
~
70Hz)
Power factor
kW/kVA, full load
(half load)
0.99 (0.98)
A, rated
3
32.3
64.6
96.9
129
162
Input current
A, maximum
4
36.6 73.2 110 146 183
Total current
harmonic
distortion
%
Linear full load < 3% (battery float charge)
Non-linear full load < 5% (battery float charge)
Duration of
progressive power
walk-in
s 20s
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 is 400V, battery remains fully charged.
4. IEC62040-3/EN50091-3: at rated load and low input voltage is 305V, battery not charged.
5*. When the UPS output power factor is 0.9, the input current is the same as that of power factor to 1. For example, the
input current of 100kVA/90kW is equal to 90kVA/90kW.
11.5
Electrical Characteristics (Battery)
Table 11-5
Battery
Item
Unit
Parameter description
Battery bus voltage
Vdc
432 (default value in factory)
Quantity of lead-acid cells
Cell
36/38/40 (12Vdc) (default value: 36)
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
%
≤
1.414%
Boost voltage
V/cell (VRLA)
2.35 (selectable from 2.3 to 2.35)
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)
1.67 (selectable from 1.60 to 1.85)