Electrical Earthing System Design & Soil Resistivity Testing
What are the procedures for creating an HV Earthing System Design? Also, how might these differ from an LV Earth design?
Firstly, although the principles underpinning HV and LV earthing are similar, the approaches are very different.
The first huge difference is the recognition that HV electrical earthing design is probabilistic in nature. Whereas LV earthing is far less so.
What do I mean?
[Read more…] about Earthing System Design Procedure A Probabilistic ApproachEarthing 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 It’s still all too common to see this outdated measure of installed success appear on client/employer requirement specifications(ER’s).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 DesignDuring a recent training event held by SES Technologies for CDEGS (Current Distribution, Electromagnetic Fields, Grounding and Soil Structure Analysis). A finite element analysis software suite for Electrical Earthing System Design, a number of issues were discussed. But one that crops up time and time again in the UK was that old chestnut in Electrical Earthing System Design Separation.
[Read more…] about Electrical Earthing System Design SeparationSo you’ve had your Electrical Earthing System designed by a professional, installed diligently by a competent contractor and had it verified to confirm the Earthing will protect lives in the event of a fault! – Job done, right?
Nearly… but the story doesn’t stop there! [Read more…] about How to avoid a stay at “Her majesty’s pleasure” Inspect your Electrical Earthing System
Earth Testing – We’re frequently asked by Critical Asset owners – “Do we really have to physically test our Electrical Earthing System?” [Read more…] about What is Remote Finite Element Analysis Earth Test?
