Gem Bids For 5 Supply- Isolator: 400kv 2000a 40ka For 1s Three Phase Horizontal Double Break Hdb Type Services- Isolator: 400kv 2000a 40ka For 1s Supervision Of Erection Testing And Commissioning Spares- Isolator: 400kv 2000a 40ka For 1s One Complete Pole Of Three Phase Hdb