supply of supply, installation and commissioning of thyristor based battery charger with discharging plant.supply, installation and commissioning of thyristor based battery charger with discharging plant.,supply, installation and commissioning of thyristor based battery charger with discharging p lant. two channel charging and discharging plant suitable for lead acid battery for wdg4 locomotive. spec ification:- input voltage=415+/-10%,3 phase (10% variation, 50 hz+/-2hz. output voltage 0 - 225 v dc. (a djustable), charging current rating 0-80 amps dc constantly. charging mode- constant voltage and consta nt current. there should be necessary protection scheme for reliable performance and safety against abnor mal condition. the equipment should have facility for regenerative discharge. it has fully controlled charge and discharge function. as per annexure-a . make: signotron, m/s scientific instrument agency, switch gea r engineers. [ warranty period: 30 months after the date of delivery ] ]