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Home » CDEGS

CDEGS

27/11/2019 By Hugh Leave a Comment

Comparison between XGSLab and CDEGS

Comparing CDEGS with XGSLab

In this blog, I’m going under to hood, so to speak. Comparing CDEGS with XGSLab to show you some real-world examples where CDEGS and XGSLab give almost identical results.

Therefore, in all of these examples, we have completed and verified the earthing design for these sites and found good agreement between the modelled results and the post-installation measurements. On this basis, we can say that XGSLab matches CDEGS for accuracy, and both tools have good agreement with the real-world measurements.

[Read more…] about Comparison between XGSLab and CDEGS

Filed Under: Electrical Earthing Tagged With: CDEGS, XGSLab

23/02/2017 By Ian Leave a Comment

Earthing Calculations for Safe System Design

Earthing calculations

Earthing Calculations regarding your safety – you’re overdue an update!

If 1-ohm is still in circulation on your documentation then this section applies to you.

Even though the Earthing Calculations for determining a safe System Earth (Ground) has shifted away from an arbitrary resistance figure, usually <1 ohm.  It’s still all too common to see this outdated measure of installed success appear on client/employer requirement specifications(ER’s). As part of the Earthing Calculations Design Safety brief.

[Read more…] about Earthing Calculations for Safe System Design

Filed Under: Earthing System Design Tagged With: BS7430, CDEGS, earth potential rise, earthing systems, Electrical Earthing System Design, EN 50522, EPR

02/06/2016 By Ian Leave a Comment

What Exactly is a Soil Resistivity Desktop Study?

Desktop Study Geology

Before installing an electrical earthing system design, there are a couple of other essential tasks to tackle. One of these tasks is the ‘Soil Resistivity Desktop Study.’ This study illustrated in the Soil Resistivity Table below.

Historically installation companies may have offered to drive a single earth rod into the ground and take a range of readings from it at various depths as it is driven deeper. This approach is now considered totally unacceptable for anything other than the most basic of designs, e.g. a generator earth. [Read more…] about What Exactly is a Soil Resistivity Desktop Study?

Filed Under: Soil Resistivity, Soil Resistivity Testing Tagged With: BS7430, CDEGS, Soil Resistivity Testing Methods

10/05/2016 By Ian Leave a Comment

Understanding Electromagnetic Inference using Finite Element Analysis

EMI using Finite Element Analysis

Finite element analysis (FEA) is a numerical method for solving problems in engineering and applied sciences. It is used to analyze and predict the behavior of complex systems. Such as structures, machines, and electronic devices, under a wide range of conditions (i.e. forces, energies, vibration, heat, fluid flow, and other physical effects).

Finite element analysis shows how something will perform when stressed. Whether it will break, wear out, or work the way it was designed BEFORE it is created, installed or built in the ‘real’ world.

It is called analysis, but in the product development process. It is used to predict what is going to happen when the product is used.

[Read more…] about Understanding Electromagnetic Inference using Finite Element Analysis

Filed Under: Earthing System Design Tagged With: BS7430, CDEGS, electromagnetic interference, EMI, FEA, Finite Element Analysis

06/05/2016 By Ian Leave a Comment

What is The Importance of Earthing in Electrical Installation?

importance of earthing in electrical installation

What is the importance of earthing in the electrical installation?

Here’s a very personal story explaining not only “What” BUT…

…Why Earthing is Important to me.

1. Back Story

How many times are you asked ”What do you do for a living?”. For most of us, it’s quite an easy response “I do this… or I do that”… e.g. “I am an Engineer at a local practice”.  However, recently someone not only asked what I do but asked… “Wow, that’s interesting, you’re a Specialist Electrical Earthing Design Consultant – WHY did you get into that?”

[Read more…] about What is The Importance of Earthing in Electrical Installation?

Filed Under: Earthing System Design Tagged With: BS7430, CDEGS, electromagnetic field, EMI

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