pvc insulated pvc sheathed armoured unscreened underground railway signalling power cable 1100v grade 2 core x 70 sq mm h2 grade aluminium conductor as per specn no irs s 63 2014 and is 1554 part i rev 4 0 warranty period 30 months after the dat e of delivery quantity tolerance 2 age item category special signaling cables total po value variation per mitted not applicable