supply of supply, installation and commissioning of thyristor based battery charger with discharging plant. two channel charging and discharging plant suitable for lead acid battery , supply, installation and commissioning of thyristor based battery charger with discharg ing plant. two channel charging and discharging plant suitable for lead acid battery for wdg4 locom otive. specification:- input voltage = 415+/-10%,3 phase (10% variation, 50 hz+/-2hz. output voltage 0 - 225 v dc. (adjustable), charging current rating 0-80 amps dc constantly. charging mode constant voltage and constant current. there should be necessary protection scheme for reliable performance and safety against abnormal condition. the equipment should have facility for regenerative discharge. it has fully controlled charge and discharge function. detail technical specification as per attached an nexure. [ warranty period: 30 months after the date of delivery ] ]