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fetch the data from relays and meters for control and displa ying the same on OWS and EWs. Bidder shall supply all the neces sary softwares for complete op eration & maintenance of the system inducting the following: ) Antivirus (4 Clients) ) MS Office (4 Clients) ) Other software (as required) to make the system complete The whole system shall be configured & integrated with the rela network wherever applicable to carryout follo wing function as minimum: Power System logging, fault reco rding, Relay monitoring & measu rement of various electrical paramet ers through relay. Software to display SLD along ith metering data from relays of entire stations. Relay Supervision (Self-diagnosti status with annunciation). Time Check & Synchronization at pre-defined regul ar intervals user. Event/Alarm handling. Report generation as per requirement. Operational and maintenance manu als including drawings shall be provided. ) SYSTEM ARCHITECTURE The SAS system will be based on centralized architecture and on concept of Feeder oriented, distributed intelligence. Each /IED will be independent from each other and its functioni ng will not be affected by any fault occurring in any of the other feeder control units of the station. The data exchange between the lectronic devices on bay and sta tion level will take place via the communication infrastructure. The switches will be connected in dual ring structure, so that an alternate route is available in case of any problem failure. Necessary alarm wi ll be generated in the SAS in case of any communication problem. )SYSTEM LEVEL FUNCTIONS ) Status supervision The position of each switchgear, .. circuit breaker, isolator, earthing switch, transformer tap changer etc., will be supervised continuously. Every detected change of 1 of 1 INDRADHANUSH GAS GRID LIMITED TECHNICAL SPECIFICATION FOR NATURAL GAS COMPRESSOR STATION FOR NORTH EAST GAS GRID PIPELINE PROJECT ______