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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.

Photo of Jayson Patrick for Technical Articles page about electrical power systems Design

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Low Voltage Design
Earthing Design
High Voltage Cable Design
Arc Flash Studies
Software Comparisons
Electrical Software
A diagram of a set of test tubes on a table with power.
3 mins read

Concrete-encased Earthing Rods

Metal earthing rods that are encased inside concrete will have a lower resistance. Concrete has a typical electrical resistivity of between 30 Ohm.m to 200 Ohm.m.
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.
Four thermal maps display varying heat distributions in a target area, with colors ranging from blue (cool) to red (hot).
7 mins read

Advanced Soil Drying for Accurate Ampacity Calculations

New methods address IEC 60287 limitations for soil drying calculations. Considers multiple circuits, load factor, and backfill installations for accurate power cable ampacity.
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.
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.
4 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.
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.
Screenshot of high voltage cable rating software
5 mins read

CYMCAP vs. ELEK Cable HV Software

The features of ELEK Cable HV software and CYMCAP software are compared in detail.
Electrical Wiring Being Installed for a New Commercial Building
7 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.
Screenshot of cable sizing calculator software named Cable Pro Web
4 mins read

JCalc vs Cable Pro Web: A Complete Comparison

Cable Pro Web is cheaper with more features than JCalc (which is not free). Choose cable sizing software that scales with your business. This article honestly compares prices, features and ease of use.
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