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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
ELEK Software Touch and Step Voltages to IEEE and IEC Standards 1170x585 - Articles
8 mins read

Safety Limit Calculations to IEEE and IEC Standards

A safe earthing system design has two objectives; to provide a means to carry normal and fault current without exceeding equipment limits or adversely affect continuity of service and to reduce the risk of a person in the vicinity of an earthed facility being exposed to the danger of a critical electric shock.
A diagram illustrating the cellular process of a cell cycle.
5 mins read

Understanding Earth Fault Loop Impedance

The purpose of this document is to provide a better understanding of Fault Loop Impedance, also referred to as Earth Fault Loop Impedance so that the requirements of AS/NZS 3000 Wiring Rules for safety, design, installation and testing of electrical installation may be met.
Electrician installing power cable 1170x585 - Articles
2 mins read

Voltage drop limits for Low Voltage installations

Voltage Drop Limits per the Wiring Rules AS/NZS 3000 as well as rules of thumb to assist with electrical design. Includes AC and DC voltage drop or rise limits.
2 mins read

Save 75 % time and $3,366 using Cable Sizing Software

Accurately calculating voltage drop and cable size will save you time and money. We show you How and Why.
Buried cables in group ELEK Software 1170x585 - Articles
4 mins read

Cable Current Rating Derating Factors Explained

Derating factors are applied to the cable current rating ensuring that cable operating temperature limits are not exceeded. Derating factors are derived to match the specific cable installation conditions.
Three core low voltage cable 1170x585 - Articles
2 mins read

New Wiring Rules and cable current ratings calculations

Discussion of the changes to AS/NZS 3000:2018 affecting cable current-carrying capacity.
Motors in a factory setting_ELEK Software
2 mins read

Maximum Demand Tables

Reference tables for diversity factors and energy demand from Wiring Rules AS/NZ 3000 for domestic and non-domestic installations.
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.
ELEK Software GIS Substation by Siemens 1170x585 - Articles
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.
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