What is Battery bank and Purpose of its use in Industry

What is Battery Bank  ??

Battery bank is one type of series connection of same type of batteries to achieve desired DC voltage as per requirement.

Series connection of Battery

Capacity of battery bank 

Capacity of battery is calculated in terms of Ampere-Hour (AH).

Suppose battery bank capacity is 500 AH and connected load ampere is 25 Amp then battery bank can supply DC power source up to 20 hours with 25 Amp load. 

25 Amp X 20 hours = 500 AH

Purpose of use in Industry

1) Useful in case of AC power supply fails for illumination and emergency pumps running purpose.

2) Useful for control of the plant by controlling machines through computer digital software like DCS and SCADA.

3) Useful for providing power supply to relays for electrical protection  purpose.

4) Useful for providing indication and annunciation purpose.

5) Providing power supply to tripping and closing coil of electrical circuit breakers.