How to Calculate the Size of UPS & Inverter with battery Bank by using Excel
This spreadsheet calculates the necessary size of a battery bank and inverter for an electrical load. It details the load details, including one device using 100 watts for 1 hour per day, for a total daily load of 100 watt-hours. It then calculates that a 60 amp-hour battery bank is required to power this 2.5 day reserve load, accounting for losses. The battery bank will use two 12-volt, 50 amp-hour batteries connected in series-parallel. A 150 kW inverter is calculated to be the appropriate size.
Inverter-UPS Size with Battery Bank Calculator:
- Calculate Total Demand Load
- Calculate Size of Battery Bank in Amp.Hr.
- Select Type of Connection of Batteries in Battery Bank
- Select Rating of Each Battery in Battery Bank
- Calculate Size of Inverter/UPS.
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Title : Inverter-UPS Size with Battery Bank
Type : Microsoft Excel Spreadsheet (xlsx)
Size : 129 KB
FAQ:
How do you calculate the size of the inverter and battery bank?
You can calculate the battery size for inverters using the formula B = P × t / Vdc, where B is the battery capacity in ampere-hour, P is the inverter’s power rating, t is the duration of power supply in hours, and Vdc is the DC voltage of the inverter.
How do you calculate battery size for UPS?
To determine a battery size one has to first calculate the load current of the UPS and then multiply it by the runtime factor. Load Current for x hours = Answer multiplied by x hours = closed battery size in Ah. Once this is derived the closest battery size for the power can be easily determined.
How to calculate battery backup for inverter?
The formula is Backup Time = C*V/W, where C represents the battery capacity in Ah, V is the battery’s input voltage, and W is the total load in watts. For instance, consider an inverter with a 200Ah battery and 12V input voltage.
How do you calculate battery bank capacity?
Battery bank capacity: Take the watt-hours per day and multiply them by the number you decided upon in 3. This should represent a 50% depth of discharge on your batteries. Therefore multiply by 2 and convert the kwh result into amp hours (AH). This is done by dividing by the battery voltage.
