Calculation of Touch Voltage and Ground Current
Calculation of Touch Voltage and Ground Current

3-phase systems and 1-phase

Calculation of touch voltage and ground current can be performed on single phase or three-phase systems.

According to the inputs for three-phase system: Line-to-Neutral Volts (Vn), Line 1 Calculated Load (A1), Line 2 Calculated Load (A2), Line 3 Calculated Load (A3), Service Neutral Impedance Z1, and Ground Resistance (3-point method) R, spreadsheet will calculate the following parameters:

  1. Resistance of Each Phase
  2. Resistance of neutral/Ground
  3. Neutral Current and Load
  4. Touch Voltage for Metal part to Earth
  5. Body Resistance and Body Current

For single-phase systems input parameters are: Circuit voltage and ampere, load, ground, electrode and body resistance.

Software:Calculation of Touch Voltage and Ground Current
Version:22.08.2012 New
Developer:Jignesh Parmar
Size:99 Kb
Download:Right here | Get Download Updates | Get Technical articles

Touch Voltage and Ground Current Calculation

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Page edited by E.C. (Google).


    Dec 26, 2014

    Dear Friends,
    Recently we have installed a 500kwp solar power plant in our state .It is a on grid system,about 25 nos of solar inverters have been installed in a area of around 1.5 km radius in different building.Here we found that the 20 kwp inverters at last building is developing over and under voltage and going failure.So pls anybody suggest what could be the reason for this and available solution.Thanks

    • Harnam Trehin
      Jun 09, 2015

      Please send me your single line and distances of each inverter from each other and from the load centre. Also please tell me what is the switching frequency of your IGBTs. Log onto our website we can help you if you still have the problem with the last inverter.


  2. […] Is an undesirable condition in an electrical system, in which electrical current flows to the ground. […]

  3. […] touch currents occur when a grounded individual touches an ungrounded object while standing in an Electric […]

  4. saeid
    Feb 22, 2014

    in the name of god

    tnx a lot

  5. farajzadeh
    Sep 07, 2013

    I am an electrical engineer and I’d like to express my great thanks to managers of this web site and its all writers. Meanwhile, I want to add one general comment. Normally in spreed sheets, the american units (mile, foot square, AWG and…) are being used. Please develop equivalent METRIC sheets too.


  6. […] in a power system. Safe operation of a substation calls for a properly designed and installed grounding system. A well-designed grounding system will ensure reliable performance of the substation over its […]

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