What is capacitor bank? All Questions › Category: Switchgear And Protection › What is capacitor bank? 0 Vote Up Vote Down Chetan Shidling Staff asked 4 years ago I need short information. 1 Answers 0 Vote Up Vote Down Chetan Shidling Staff answered 4 years ago The capacitor bank is used in many places such as in substation, industry, etc it is used to improve the power factor.