Toshiba 4200FA CT/XT Toshiba, Battery Backup Time and Discharge Process, Models, 15/25/30/50 kVA

TOSHIBA

6.5Battery 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.

6.6Battery 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