Section 6(7) in Tamil Nadu Electricity Grid Code, 2005
(7)Connection Points(i)Generating Stations including IPPs: Generating stations Switchyard Voltage may be at the level of 400,230 and 110 kV or as agreed to by the STU. Unless specifically agreed with the STU, the connection point shall be the outgoing feeder gantry of the Power Station switchyard. All the terminal, communication, protection and metering equipments owned by the generating agency, within the perimeter of their site shall be maintained by them. From the outgoing feeder gantry onwards, all electrical equipments shall be maintained by the STU.(ii)Distribution Licensee: The Voltage may be at the level of 110,33,22 and 11 kV. The connection point shall be the outgoing feeder gantry of the STU's sub-station, if the sub station is owned by STU, else, the connection point shall be the terminal structure feeder gantry at the entry into the sub station.(iii)Inter-State transmission System: For the Southern Regional Transmission System, the inter state transmission link to the intra state system, the connection point, protection scheme, metering scheme, meteYing point and the voltage shall be in accordance with the mutual agreement between CTU and the STU.
