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Power Systems Technical Articles

Our experts continuously work on power systems problems, and we share solutions with Practical Reference Articles.

The main topics are earthing system modeling, power cable ratings, HV/LV electrical design, protective device coordination, and arc flash studies. We cover IEC and IEEE standards.

Sign up for my email newsletter and I will send you the latest technical articles as they are released – Jayson Patrick

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SafeGrid Reach Touch Voltage Plot 1170x585 - Articles - Earthing Design

January 10, 2023

4 mins read

Reach Touch Voltages Explained

Reach touch voltages are different to touch voltages and automatically set to zero when the distance between the voltage point on the ground surface and the grid conductor which is touched exceeds a reach distance.

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ELEK Software

144
1653971060513 1170x585 - Articles - Earthing Design

May 30, 2022

2 mins read

Soil Frequency Dependency During Lightning Strikes

The effects of lightning strikes on earthing or protection systems designed to IEC 62305 can be modelled using an equivalent single frequency from 25kHz up to 1MHz which gives similar results to a time-domain approach. This article provides the frequency and current values to be used for modelling lightning.

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ELEK Software

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Lightning mast on a building Close up 1170x585 - Articles - Earthing Design

December 31, 2021

6 mins read

Modelling Lightning Effects with an Equivalent Frequency

The effects of lightning strikes on earthing or protection systems designed to IEC 62305 can be modelled using an equivalent single frequency from 25kHz up to 1MHz which gives similar results to a time-domain approach. This article provides the frequency and current values to be used for modelling lightning.

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ELEK Software

130
Aerial of Industrial Installation with Substation 1170x585 - Articles - Earthing Design

November 29, 2021

11 mins read

Earthing System Types Explained

Low voltage earthing systems include TN-S, TN-C-S, TT, IT and DC. High voltage earthing includes solid, ungrounded, resistance, reactance and resonant.

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ELEK Software

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