3rd call Work of Upgradation of existing SAS for ABB Micro SCADA 9. 3. 1 of 400kV & 220kV switchyard at 400/ 220KV substation Koradi- II including accessories such as GPS clock, Inverter, remote gateways for LDC, furniture etc. as per specification under 400KV RS ( O & M ) Division Koradi- II.