# Calculation of Touch Voltage and Ground Current

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## 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 Developer: Jignesh Parmar Size: 99 Kb Price: Free Download: Right here | Get Download Updates | Get Technical articles

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### 7 Comments

1. Er DEBASISH PATTANAIK
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.

Thanks,

2. saeid
Feb 22, 2014

in the name of god

tnx a lot
helpful

3. 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.

Regards:
Farajzadeh

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