supply of underground railway signaling cable unscreened, pvc insulated, pvc inner sheathed, armoured and pvc outer jacket with high conductivity, annealed copper conductor, size: 30 core x 1.5 sq.mm conforming t o rdso specn. no. irs-s-63/2014 (rev.4.0) with latest amendments. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 2 %age , item category : special (signaling cables) , total po value variation per mitted: not applicable ] ] , underground railway signaling cable unscreened, pvc insulated, pvc inner sheathed, armoured and pvc outer jacket with high conductivity, annealed copper conductor, size: 30 core x 1.5 sq.mm conforming t o rdso specn. no. irs-s-63/2014 (rev.4.0) with latest amendments. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 2 %age , item category : special (signaling cables) , total po value variation per mitted: not applicable ] ] , underground railway signaling cable unscreened, pvc insulated, pvc inner sheathed, armoured and pvc outer jacket with high conductivity, annealed copper conductor, size: 30 core x 1.5 sq.mm conforming t o rdso specn. no. irs-s-63/2014 (rev.4.0) with latest amendments. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 2 %age , item category : special (signaling cables) , total po value variation per mitted: not applicable ] ]