Toshiba 4200FA Manual De Usuario

Descargar
Página de 66
TOSHIBA 
 
38 
 
5.8 
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. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
5.9 
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 
15/25/30/33/50 kVA 
Nominal Voltage 
288 VDC 
Alarm Voltage 
252 VDC 
Shutdown Voltage min. 
216 VDC