Bulgaria – Machines and apparatus with individual functions – Доставка на релейни защити за изграждане на ВС Добрева Чешма за нуждите на ЕЛЕКТРОРАЗПРЕДЕЛЕНИЕ СЕВЕР АД

This contract envisages the supply, through purchase, of new relay protection devices for the construction of the Dobriva Cheshma substation for the needs of „Electro Razpredelenie Sever“ AD, as follows: 1. Longitudinal differential relay protection with communication between the individual units according to protocol C37.94 and remote control according to protocol IEC 61850, for secondary current 5A - 4 units; 2. Longitudinal differential relay protection with communication between the individual units according to protocol C37.94 and remote control according to protocol IEC 61850, for secondary current 1A - 2 units; 3. Longitudinal differential relay protection with communication between the individual units according to protocol C37.94 and remote control according to protocol IEC 60870-5-103, for secondary current 5A - 2 units; 4. Longitudinal differential relay protection with communication between the individual units via "dark fibre" with a length of up to 1km and remote control according to protocol IEC 60870-5-103, for secondary current 5A - 4 units; 5. Longitudinal differential relay protection with communication between the individual units via "dark fibre" with a length of up to 1km and remote control according to protocol IEC 61850, for secondary current 5A - 4 units; 6. Supply of differential protection for busbars for 3 connections with remote control according to protocol IEC 61850, for secondary current 5A - 2 units. Note: The specified quantity is indicative and may change according to the needs of the Contracting Authority.