supply of mobile contact pin assembly and insulating base for coupling socket assemblymobile contact pin assembly and insulating base for coupling socket assembly,mobile contact pin assembly for phase, neutral and earth as per rcf drawing no. -lw71316 alt b and confirming to rdso spec. no.-rdso/pe/spec/ac/0177 (rev.1) 2013 suitable for lhb eog coaches main assembly inter vehicular coupler unit. makes: approved vendors of iv coupler as per rdso spec. no.- rdso/pe/spec/ac/0177 (rev.1) 2013. [ warranty period: 30 months after the date of delivery ] ] , insulating base for coupling socket assembly (with fixing screws) assembly (with fixing screw s) for inter vehicular coupler 500a, 750 v, 3 phase, 50 hz for lhb type coaches confirming to rdso specifi cation no. - rdso/pe/spec/ac/0177-2013 (rev-1) with rcf drawing no.-lw71303,alt.b. makes: any appro ved sources of iv coupler as per rdso spec. no. rdso/pe/spec/ac/0177-(rev-1) 2013 [ warranty perio d: 30 months after the date of delivery ] ]