Cable impedance calculator zs app for android description: Elcalczs pro is an electrical calculator app that will calculate the resistance of the line conductor and cpc (r1 + r2).
And earth fault loop impedance (zs) for a new electrical installation.
This is necessary for determining whether the circuits protective device will operate within the correct time limit due to the fault current generated by theresitance of the circuit.
Works for copper cables up to 1000mm.
Allows you to select ambient temperature and apply correction factors for cable type.
Correction factors listed in help plies with bs 7671 : 2008 17th edition.
Now has a function for calculating cablelength when inputting r1+r2 value.
Automatically selects correction forcable type installation and ambient temp.
Length given in meters.
Please rate this app if you like it.
