Technical Specifications
74
Table 34 Battery
Intermediate DC Circuit
Rated Power,
kVA
Unit of
Measurement 10 15 20
Battery Bus
Voltage
VDC
Nominal: 480V (VRLA Float charge is 540V)
Range: 400V - 600V
Number of Lead-Acid Cells
Nominal 240 = [40 x 6-cell (12V) blocks]
Maximum 264 = [44 x 6-cell (12V) blocks]
Float Voltage V/cell (VRLA)
2.25 V/cell (selectable from 2.2 –2.3V/cell)
Constant current and constant voltage (IU) charge mode
Temperature
Compensation
mV/°C/cl - 3.0 (selectable 0 to – 5.0 around 25°C or 30°C. or inhibit)
Ripple Voltage % V float ≤1
Ripple Current % C
10
≤5
Boost Voltage V/cell (VRLA)
2.35 V/cell (selectable from 2.30-2.40V/cell)
Constant current and constant voltage (IU) charge mode
Boost Control
- float-boost current trigger 0.050 C
10
(selectable 0.030-0.070)
- boost-float current trigger 0.010 C
10
(selectable 0.005-0.025) with
24 hr safety timeout (selectable 8-30 hr)
- boost mode inhibit also selectable
End Of
Discharge
V/cell (VRLA)
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).
Battery Charge V/cell
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
Battery
Charging Power
*
max current
(adjustable) 1
kW 2.5 5 5
A 3.75 7.5 7.5
* At low input voltage the UPS recharge capability increases with load decrease (up to the maximum capacity indicated)
1. Max currents listed are for EOD voltage of 1.67 V/cell for 240 cells.
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