Replace of electromechanical protections for terminal protection SPAC 315C system in selected switchboards 6kV on NPP Temelin

In this dissertation I focused on description of engineered replacement of outdated electromechanical protections for new protection terminal SPAC 315C in the 6 kV substations on the nuclear power plant Temelin. I tried to demonstrate practical rationalization of this step, which will lead to better operating safety, increase of control comfort and last but not least will lead to decrease of cost for maintenance of equipment in operation and this will accelerate return of the amount invested.