These spreadsheets below will make your endless calculations much more easier!

  • Calculation of IDMT Over Current Relay Settings (50/51/50N/51N)
  • Calculation model for thermal relay Siemens 7SJ64
  • Motor Protection Relay Selection Curves
  • Over current protection – INVERSE TIME O/C PROTECTION CALC – 51(N) – Directional OC – Primary & secondary current calculation
  • Filter Design Calculation
  • P63x Differential CurrentsCalculation MiCOM P634/P633/P632
  • Calculating the operation current in Bias Differential Relays MiCOM P633
  • POINT-TO-POINT METHOD OF SHORT CIRCUIT CALCULATIONS
  • SLOPE CALCULATION OF LINE DIFF RELAY P543
  • TMS Calculate


Download Helpful Excel Spreadsheets for Protection Engineers packageĀ 

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