supply of thin walled electron beam , thin walled electron beam irradiated/chemically cured cross-linked flexible elastomeric cable with copper c onductor single core size: 185 sq. mm, 3000v to rdso specification no. elrs/spec/elc/0019. rev.4 of february-2018. the requir ement of working voltage above 750 v upto and including 1.8 kv rms to earth and 3 kv between phases on ac circuit. [ warr anty period: 30 months after the date of delivery ] ] , thin walled electron beam irradiation flexible cable of size 70 sq mm with copper conductor suitable for rolling stock application conforming to rdso specification no. elrs/spec/elc/0019 rev-4 voltage rating 1.8 kv grade with oem test certificate. material to be procured from rdso approved source only. [ warranty period: 30 months after the date of delivery ] ]