Battery Backup Time And Discharge Process; Battery Low Voltage Tolerances - Toshiba 1600XPi Series Installation And Operation Manual

9.5

Battery Backup Time and Discharge Process

The UPS internal batteries provide approximately 5-7 minutes of back-up time depending on the 1600XPi unit kVA rating.
These times are valid when the unit is operating under full load and at the rated power factor. The exact length of these times
will depend on the UPS model used, condition of the batteries, amount and type of load, temperature and other variables.
See battery backup time in "Appendix A: 1600XPi Specifications" on page A1.
The following illustration graphically shows the battery discharge process at full load conditions.
9.6

Battery Low Voltage Tolerances

Excessive discharge will cause the UPS battery voltage to drop. The chart shown below lists the voltage level at which each
UPS low-voltage alarm will sound and at what level the low-voltage condition will cause the unit to automatically shut down.
UPS Capacity
Nominal voltage (Vnom)
Alarm voltage (Vlow)
Shutdown voltage (Vmin)
Note: Above values are based on full-rated load.
1600XPi Series UPS Installation and Operation Manual – 60616-014
CURRENT VOLTAGE
V
NOM
V
LOW
V
MIN
I
MAX
I
MIN
100%
BATTERY CAPACITY
3.6 kVA
144 Vdc
130 Vdc
114 Vdc
20% 0%
6 kVA 8 kVA 10 kVA
216 Vdc 288 Vdc 288 Vdc
192 Vdc 246 Vdc 246 Vdc
170 Vdc 227 Vdc 227 Vdc
SHUTDOWN
14 kVA 18 kVA 22 kVA
288 Vdc 288 Vdc 288 Vdc
246 Vdc 246 Vdc 246 Vdc
227 Vdc 227 Vdc 227 Vdc
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