supply of supply, installation, testing and commissioning of igbt-based constant current/constant voltage battery charger/discharge regenerative panel , supply, installation, testing and commissioning of igbt-based constant current/constant volt age battery charger/discharge regenerative panel (310v/25a) type-3, suitable for charging and discharging of 70 ah,75ah, 90ah & 120 ah batteries of icf and lhb coaches as per rdso specifications no. rdso/pe/ spec/ac/0008 (rev-2), april 2010. based on drawing no.rdso/cdig/3125/appv/mech/01 (rev.00).(warran ty period: up to 72 months from the date of delivery.)note: the contractor shall undertake to train, at no co st, the supervisors of indian railways in the operation, maintenance, fault finding, and repair of the offered equipment under the guidance of skilled engineers during the first year of the equipments service at the fir ms premises as per clause no. 20.0 of rdso spec. no. rdso/pe/spec/ac/0008(rev-2). [ warranty period : 30 months after the date of delivery ] ]