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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 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 



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