calculation of battery capacity for UPS
calculation of battery capacity for UPS
(OP)
I would like to know how can you calculate the size and quantity of batteries (lead acid and nickel cadmium)to withhold a load of of 30 kw and 100 kw for 30min. and for 1hour.
please show me how and where such information can be provided...many thanks to all
please show me how and where such information can be provided...many thanks to all






RE: calculation of battery capacity for UPS
watt*hr = watthour
TTFN
RE: calculation of battery capacity for UPS
Hope it will help.
Yigo
RE: calculation of battery capacity for UPS
1. Determine the required DC bus voltage.
2. Determine the minimum allowable discharge voltage.
3. Determine the battery kW (including inverter and cable losses)
4. Divide battery kW by the number of cells to get cell kW.
5. Look in mfg's tables to find appropriate type of cell based on required kW, discharge voltage and operating temperature.
Some UPS's will tolerate a range of DC voltage, so you can adjust the number of cells to obtain the exact run time needed.