Like if your load is half 440 watt then it will give double backup around 6 hours.
Inverter backup time reduced.
Top up flooded lead acid battery with distilled water regularly.
Back up time of inverter battery battery volt x battery ah rating total watts on load so if a person use 1 ceiling fan 1 tube light 2 15watts cfl simultaneously with 150 ah battery then the backup time will be calculated as.
Change the batteries of your inverter if they are worn out.
1 tube light 40 watts.
Math time backup frac voltage battery times ahrating battery load math so if you have two 15w bulbs a ceiling fan rated at 100w say total load is 125w.
Possible cause remedy.
Here is a quick guide on calculating inverter and battery backup time.
The battery inverter s maximum power output in kilowatts is the second reason for the whole home backup myth.
1 ceiling fan 75 watts.
1 too much power consumption.
If the inverter is still functional a maintenance manager might be tempted to simply ignore these signs of wear and tear.
Poor quality batteries fail prematurely and do not offer sufficient backup.
There are the different capacity of inverters like 200va 250va 350va 400va 450va 500va 625va 1200va etc.
Most battery backup inverters were designed for 200 amp home electric services.
With time electrical connections tend to loosen or corrode.
4 battery has lost electrolyte.
Battery ah 2 150 300 ah.
Over time batteries lose their designed capacity thus reducing the backup.
2 battery has worn out.
3 battery is not properly charged.
The load of the inverter should be chosen based on how many watts of appliances you power at a time.
If your load is less than 880 watt then it will give more backup.
Backup time is shortened.
If charger appears to be faulty get ups inverter fixed.
Remember that if you run only one ceiling fan 75 watts with 150 ah battery the expected backup time will be 15 to 16 hours.
Backup power inverter includes the hardware required for automatic backup power for backed up loads in case of grid interruption on grid applications maximizes self consumption through export limit feature and time of use shifts for reduced electric bills.
Actually if you run two ceiling fans 75 75 150watts simultaneously with 150 ah battery you were drawing more than 95 watts so clearly the backup time will be reduced and you can expect only 5 to 6 hours backup.
The inverter backup time is can be computed using this formula best time in practice the actual time will be less than this.
Formula to calculate the back up time of inverter battery.
