How To Calculate Earth Fault Loop Impedance. The current require to cause automatic operation of the disconnecting protective device within the required disconnecting time. For instance youd like to test the outermost socket.
To find the fault current Ik the nominal applied voltage U0 is. Cable Pro Web software accurately calculates fault loop impedance. Total Earth Fault Loop Impedance Zs Ze R1.
Total Earth Fault Loop Impedance Zs Ze R1.
The impedance of the earth fault-loop comprising the source the active conductor up to the point of the fault and the return conductor between the fault and the source. Find the outermost point on the circuit you want to test. Can the test be perfomed with the VSD in the circuit or should it be by passed or perhaps measure EFLI at the incommer of the VSD and calculate R1 R2 for the remainder of the circuit. Check instrument for safety and correct settings.
