Dear ALL4HERE
Hi and welcome to the EDA board.
think that your mean is the capacitor bank ? if yes , the capacitor bank is for the power factor correction at reactive loades.
And it will help to improve the reactive power coefficient . ( up to 0.9) .
Best Wishes
---------- Post added at 01:12 ---------- Previous post was at 01:08 ----------
Or probably your mean is about the capacitor ics , if yes , they are some ics the consist some capacitor at one package ( i think)