Helpful Excel Spreadsheets for Protection Engineer

These spreadsheets below will make your endless calculations much easier!      Calculation of IDMT Over Current Relay Settings (50/51/50N/51N)  Calculation model for thermal relay Siemens 7SJ6 Motor Protection Relay Selection Curves Over-current protection – INVERSE TIME O/C PROTECTION CALC – 51(N) – Directional OC Filter Design Calculation P63x Differential CurrentsCalculation MiCOM P634/P633/P632 Calculating the […]