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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.

Join 23K+ engineers and get our latest technical articles direct to your inbox as they are released – Jayson Patrick

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Low Voltage Design
Earthing Design
High Voltage Cable Design
Arc Flash Studies
ELEK vs Competitors
Electrical Software
Large solar PV farm in Queensland ELEK SafeGrid Software 1170x585 - Popular
10 mins read

Solar Farm Earthing Design and Modelling Guide

How to design and model earthing systems for a solar PV farm to the latest practices and standards. Soil resistivity, fault levels, and safety are covered.
Attention power cables in the ground ELEK Software 1170x585 - Popular
2 mins read

The 4 Main Causes of HV Cable Failures

A report investigated 6214 cable failures over a 14 year period. The main causes were insulation breakdown, excavation, joints or switchgear failure. The results may surprise you.
High voltage power cable with copper conductors
8 mins read

Achieving Accurate High Voltage Cable Current Ratings

Accurate high voltage cable current ratings achieved - ELEK Cable HV software matches CIGRE TB 880 and performs IEC 60287 compliant calculations.
Solar panels on Sydney building 1 1170x585 - Popular
5 mins read

Voltage Rise Calculations

Voltage rise can occur in solar PV systems on the AC side between the power inverters and network connection point. Voltage rise calculations are no different to those for voltage drop.
Crushed blue metal rock and foundation in switchyard 1 1170x585 - Popular
3 mins read

Surface Material Resistivity

This article provides typical values for surface layer resistivity to be used for earthing and ground electrical calculations of touch and step voltages.
Close-up of a high-voltage power cable, showing layers of insulation, copper conductors, and outer black sheath.
5 mins read

Summary of Electric Power Cable History

This article provides a timeline of the key milestones from early 19th century insulated wires through to modern innovations in high-voltage cables.
ELEK Software GIS Substation by Siemens 1170x585 - Popular
3 mins read

Earthing modelling of concrete slabs

Switchgear in substations is installed on top of concrete slabs containing substantial quantities of steel reinforcement. Often the embedded steel reinforcement is bonded to the main earthing system and used to cost-effectively improve earthing electrical performance and safety.
Screenshot of an application showing an edit load panel with fields for electrical installation, description, and phases. A photo of a 6-socket outlet adapter, quantity set to 12, is highlighted in red.
2 mins read

Double Socket-outlets in Maximum Demand Calculations

The AS/NZS 3000 Standard provides different rules in Appendix C for maximum demand with socket-outlets for domestic, commercial, and industrial electrical installations. Calculation examples are provided involving double socket-outlets.
Diagram showing a 400V switchboard supplying power through cables with resistance and reactance to three motors and a control panel, illustrating supply and load voltage and power factor.
5 mins read

Advanced Voltage Drop Calculations

Advanced voltage drop calculations for electrical cables. Learn how power factor, cable temperature, impedance, motors, and installation conditions affect voltage drop.
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