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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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Low Voltage Design
Earthing Design
High Voltage Cable Design
Arc Flash Studies
Software Comparisons
Electrical Software
Lightning strike on substation and transmission tower
4 mins read

Transmission Line Tower Earthing Analysis

The purpose of transmission line grounding is to provide adequate lightning performance of the line; and effectively dissipate fault current avoiding the build-up of unsafe step and touch potentials around the tower base.
Motors in a factory setting_ELEK Software
1 min read

Maximum Demand

The 4 main approaches for determining the maximum demand of an electrical installation are discussed.
A software interface screen displaying a pop-up for creating a new electrical calculation. Various calculation options such as "Voltage Drop" and "Maximum Demand" are listed.
7 mins read

Top 3 Electrical Engineering Design Software for Australia

We've reviewed the top 3 electrical engineering design software packages in 2024 that are designed for Australian conditions and electrical standards. We've compared the features, capabilities, pricing, and technical support.
Electrical Wiring Being Installed for a New Commercial Building
6 mins read

Economic and Energy Efficient Cable Sizing

The principle of economic cable sizing is to select a minimum cable size that is safe to use and the cost of the losses over the lifetime is also minimised.
Flowchart showing a series of squares, some filled red, on a path moving upward toward a "Higher Priority" label with an arrow on the right side.
3 mins read

Practical Guide to Selective Protection Coordination

Learn how to set priorities and adjust protective devices for selective coordination to isolate faults and minimise outages in electrical systems.
Close-up of an electrical panel displaying several circuit breakers, labeled with yellow tags such as QF1, QF2, and QF6, and connected by various colored wires.
3 mins read

The Ultimate MCB Protective Device Selection Guide

Miniature Circuit Breakers (MCBs) protect against overcurrent in electrical circuits. MCBs are categorised based on their tripping characteristics, represented by different device curves such as Z, B, C, K, and D. This article offers guidance on selecting the right type for your application.
1639370701193 1099x585 - Popular
3 mins read

Lightning Strikes to Buildings with Earthing Systems

This report shows the effects of a direct lightning strike to an air terminal installed on top of a building which is connected to a buried earthing system.
Vehicle charging 1 1170x585 - Popular
3 mins read

Automatic Maximum Demand Calculations

The new maximum demand module provides fast and accurate calculations for loads in accordance with rules from the Standards and for custom loads. An ingenious automatic phase balancing algorithm ensures maximum demand and phase imbalance are both minimised.
SafeGrid Reach Touch Voltage Plot 1170x585 - Popular
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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