Toshiba T42F3F500XAMBN User Manual - Page 41

Battery Backup Time and Discharge Process, Battery Low Voltage Tolerances, Models, 25/30/50 kVA

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TOSHIBA 6.5 Battery Backup Time and Discharge Process The UPS system, when used in conjunction with a TOSHIBA designed Battery System, is designed to provide several minutes of back-up time (Refer to the Battery System Manual for back-up times). These times are valid when the unit is operating under full load. When these models are operating at half load, the batteries can provide approximately 2 times the specified value. 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. CAUTION Contact TOSHIBA when using other than TOSHIBA designed Battery Systems to determine proper compliance. Using other systems could void Warranty and or Safety Certifications. The following illustration graphically shows the battery discharge process at full load conditions. 6.6 Battery Low Voltage Tolerances Excessive discharge will cause the UPS battery voltage to drop bellow tolerable levels. The chart shown below lists the voltage level at which each UPS unit's low-voltage alarm will sound, and also at what level the low-voltage condition will cause the unit to automatically shut down. Models Nominal Voltage Alarm Voltage Shutdown Voltage min. 15/25/30/50 kVA 288 VDC 252 VDC 216 VDC 4200FA CT/XT User's Manual 40

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TOSHIBA
6.5
Battery Backup Time and Discharge Process
The UPS system, when used in conjunction with a TOSHIBA designed Battery System, is
designed to provide several minutes of back-up time (Refer to the Battery System Manual
for back-up times). These times are valid when the unit is operating under full load. When
these models are operating at half load, the batteries can provide approximately 2 times
the specified value. 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.
CAUTION
Contact TOSHIBA when using other than TOSHIBA designed Battery Systems
to determine proper compliance. Using other systems could void Warranty and
or Safety Certifications.
The following illustration graphically shows the battery discharge process at full load
conditions.
6.6
Battery Low Voltage Tolerances
Excessive discharge will cause the UPS battery voltage to drop bellow tolerable levels. The
chart shown below lists the voltage level at which each UPS unit's low-voltage alarm will
sound, and also at what level the low-voltage condition will cause the unit to automatically
shut down.
Models
15/25/30/50 kVA
Nominal Voltage
288 VDC
Alarm Voltage
252 VDC
Shutdown Voltage min.
216 VDC
4200FA CT/XT User’s Manual
40