supply, erection, installation and commissioning of igbt based constantcurrent/constant voltage static battery charger for 120 ah batteries, type-1capacity 155v/25a, as per rdso spec no:rdso/pe/spec/ac/00008 (rev,2) april 2010 or latest.firm have to quote to the latest revision/alteration of drawing/specification, available on the date of tenderopening.