supply of set of loop boxes/logic boxes & dc power source.set of loop boxes/logic boxes & dc power source.,set of loop boxes/logic boxes for 3 phase locomotives as per clw specification no as per c lw spec no. clw/es/3/0538 alt. a. detailed set description is as per annexure-a. [ warranty period: 30 months after the date of delivery ] ] , dc power source. detailed description- dual output dc regulated power supply with digita l meter as per specification - multi output linear dc power supply, electrically floating outputs up to 500 v dc, ac input voltage:200-230 vac +/- 10%, 50 hz, output variable voltage rating: 0-32 v , dc in each cha nnel current 0-2-2.5-3a, display and control feature - 03 digit led display, operating temperature range 0-5 0 degree celsius digitally controlled output setting, store/load 10 sec of output setting in internal memory, usb interface, programable arbitrary variable output by feeding co-efficient of the curve, fully protected ag ainst overload and short circuit, 5v/5a with over voltage crowbar protection for digital ics, three independe nt outputs electrically isolated from each other, precise regulation, low ripple and noise for both constant v oltage and current operation, separate display for voltage & current for each output. make similar to aplab model no lq6324t/lq6324p. [ warranty period: 30 months after the date of delivery ] ]