Table 36 Intermediate Dc Circuit, Battery - Emerson Liebert NX 400V User Manual

Table 37 Intermediate DC circuit, battery
Rated Power, kVA
Battery bus voltage
Quantity of lead-acid cells
Nominal
Maximum
Minimum
Float Voltage (VRLA)
Temperature
compensation
Ripple Voltage
1
Ripple Current
Boost Voltage (VRLA)
Boost Control
End Of Discharge (VRLA)
Battery Charge
Battery Charging Power
Max Current
3
(Adjustable)
1. For a battery capacity of 24Ah or that corresponding to a rated back-up time of 10 minutes, whichever is greatest.
2. At low input voltage the UPS recharge capability increases with load decrease (up to the maximum capacity indicated).
3. Maximum currents listed are for end of discharge voltage of 1.67 V/cell for 240 cells.
Unit of
Measurement 30
VDC
—
—
—
V/cell
mV/°C/cl - 3.0 (selectable 0 to – 5.0 around 25°C [77°F] or 20°C [68°F]or inhibit)
% V float
% C
10
V/cell
—
V/cell
V/cell
2
kW 5.1
A 13
40 60 80
Nominal: 480V (VRLA Float charge is 540V)
Range: 400V ~ 600V
240 = [40 x 6-cell (12V) blocks]
252 = [42 x 6-cell (12V) blocks]
228 = [38 x 6-cell (12V) blocks]
2.25 V/cell (selectable from 2.2 –2.3V/cell)
Constant current and constant voltage (IU) charge mode
2.35 V/cell (selectable from 2.30-2.40V/cell)
Constant current and constant voltage (IU) charge mode
- float-boost current trigger 0.050 C
- boost-float current trigger 0.010 C
24 hr safety time-out (selectable 8-30 hr)
- boost mode inhibit also selectable
1.63 V/cell (selectable from 1.60~1.75 V/cell
Auto Inverse EOD voltage x discharge current mode
(The end of discharge voltage increases at low discharge currents).
2.4 V/cell (selectable from 2.3-2.4V/cell)
Constant current and constant voltage (IU) charge mode
Programmable auto trigger or inhibit of boost mode
6.7 10 13
17 25 33
117
Technical Specifications
100 120 140 160
≤ 1
≤ 5
(selectable 0.030-0.070)
10
(selectable 0.005-0.025) with
10
17 20 23.8 27.2
43 50 60
200
34
68 85