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. Probabilistic Approach The first huge difference is the recognition that HV electrical earthing design is probabilistic in nature. […]
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 […]
During 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 […]
So 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!
Earth Testing – We’re frequently asked by Critical Asset owners – “Do we really have to physically test our Electrical Earthing System?”
It’s difficult to get excited about any of the ISO standards but knowing these are hardly the most exciting of reads, imagine the delight when asked by a client “what do you know about ISO 55000?”