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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.

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Low Voltage Design
Earthing Design
High Voltage Cable Design
Arc Flash Studies
ELEK vs Competitors
Electrical Software
Power Cables lineup 1170x585 - Popular
17 mins read

High Voltage Power Cable Current Ratings

Explains the effects of the installation conditions and the bonding arrangement on the current rating of high voltage power cables.
A person wearing an orange safety vest holds a cross-section of a high-voltage power cable, showing multiple concentric copper segments.
17 mins read

HVDC Cable Current Ratings: Thermal and Electrical Stress Constraints

Comprehensive analysis of field inversion, IEC 60287 Standards, finite element modelling, and case studies to optimise HVDC cable ampacity and insulation design.
Substation Crushed Rock for Safety ELEK Software 1 min 1 1170x585 - Popular
4 mins read

Why Crushed Rock is Laid in Substations

There are two reasons, according to the standards, why crushed rock or gravel is laid in substations, as explained in this article.
ELEK Software Vehicle Charging Station 1170x585 - Popular
3 mins read

Touch Voltage Calculations for LV Electrical Systems

The definition of “touch voltage” is the voltage between accessible exposed and extraneous conductive parts that may lead to the risk of electric shock in the event of an electrical fault. This article covers AS/NZS 3000, BS 7671, and NFPA 70E rules concerning touch voltages and provides the equations for calculations.
Earthing Design Software Screenshot
11 mins read

7 Best Earthing and Grounding Design Software Packages

We compare the best and latest earthing and grounding system design software including SafeGrid, CDEGS, XGSLab, ETAP and more based on technical features and compares price.
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.
ELEK Software Grounding Earthing cables on copper bar 1 1170x585 - Popular
6 mins read

Protective Earth Cable Sizing

This article explains how to properly size earth conductors for earth faults and includes the method, equations, constants you can use and worked examples to follow.
Illustration of two electrical cables: one with a single copper conductor and the other with multiple layers including insulation, shielding, and a copper conductor.
9 mins read

Ampacity Calculations for Southwire Power Cables

We performed ampacity calculations for hundreds of industrial and utility power cables from Southwire. The assumptions used for modelling in the software are explained. The calculated ampacities were all within 3 % of the values given in ICEA and NEC standards.
Lightning strike on substation 1 1 1170x585 - Popular
6 mins read

Lightning Protection Design for Substations

Direct lightning strikes to substations causes physical damage and poses hazards for people.
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