How to fit a battery pack for a UPS power supply
A lot of formula I can give you my picture cut you to recordSuch as:Load power 3500 algorithm: 3500/0.7 = 5000 (host with 6K long machine) battery algorithm: 6000 (6K) *0.5/192V=15.625 (battery with 17AH group), battery number: 192/12 = 16 batteries
1, UPS host power selection according to: power = load / power factor (usually 0.8)2, long machine configuration battery algorithm is as follows:
Nominal capacity of battery pack = I maximum /CWork out the nominal capacity of the battery.Because the lowest critical voltage E - critical value of the battery, it will lead to the requirements of the battery capacity is too large for the situation ah. According to the experience of using the current, can be calculated as the actual battery capacity ah:Actual battery capacity (AH) = nominal capacity of battery pack *0.8Time and discharge rate C
The maximum discharge current calculation of battery value: I =Pcos (*E *N / Phi ETA critical)Note: nominal power output of P to UPS powerThe output power factor cos, Phi UPS power (power frequency machine is generally 0.8)Efficiency, UPS inverter, usually 0.88~0.94 (the actual calculation can take 0.9)The critical discharge voltage of E critical storage battery (12V battery is about 10.5V, 2V battery is about 1.67V)N = the quantity of each batteryAccording to the backup time of the selected battery, find the discharge rate value C of the required battery, and then according to the:
