Ever needed a quick response Lightning Protection Risk assessment service? Here is something we’ve tried to make incredibly easy for you to use. You can now order and pay online, and the independent lightning protection risk assessment to IEC 62305-2 can be turned around within a week with our premium service, or two weeks on our normal service.[Read more…] about Here’s something else to make your life a little easier! A lightning-quick risk assessment service
Ask the Experts Electrical Earthing Blog
I recently attended a training session with Omicron in Germany. So, looking at their primary injection test set for earth electrode and line impedance systems testing. I looked at how to set up a current injection. Potentially up to 100 A. Also, down an Overhead line or Feeder cable. To achieve good separation between the electrode under test and the auxiliary electrode.
Previously, test methods have relied on dedicated cables for the measurement. Which, has limited the available area to deploy the auxiliary electrode. Owing to land usage constraints and roads. So, being able to use something in a built-up environment on electrically large High Voltage systems. Thus, avoiding road closures. etc. Therefore, comes as a breath of fresh air to a lot of engineers facing this problem.[Read more…] about Test large electrode systems using heavy current – for more accurate earth electrode resistance measurements
Earthing Standards Update. For the past few years. GreyMatters has been fortunate enough to support the rail electrification and upgrade programmes across the UK for Earthing Design. And maintaining a consistent approach. Across a building programme of this scale. Can be a massive engineering headache for all design teams concerned.
Especially, when Earthing Standards touches on so many disciplines along the way. From civils, OLE (Overhead line equipment), signals, EMC, 3rd parties, ecologies, geophysical. As well as the more obvious general E&B (earthing and bonding).[Read more…] about November 2018 – Earthing Standards update (Rail)
What size conductors should I use? And, is there a simple table I can use for this HV high voltage earthing design project. These are great questions and often asked. This post answers these questions together with the choice of conductor materials and jointing method within a high voltage earthing design project.
Assessing conductor size is entirely dependent on the electrical configuration and the load that the conductor must take. For example, an above-ground bonding conductor serves to transfer current with minimal voltage drop, from A to B. A directly buried conductor has an additional purpose, that of leaking the fault current or voltage into the local geology (as part of an electrode).[Read more…] about How to Size High Voltage Earthing HV Conductors Correctly
What’s the difference between earthing and bonding. That’s a question our readers and clients ask often. Also, we’re asked quite a bit about earthing and bonding in general. So, there’s an unusually large amount of confusion around the term Earthing and Bonding. Or, for our friends in the states; you might come across the term grounding and bonding.
Therefore, in this piece, I aim to clarify the difference between – what is Earthing and what is bonding and whether there is a difference.
Breaking things down into simple terms; Earthing – grounding can mean all things to all people. Hence, it is more realistic to think of Earthing as the ‘electrode’ itself. Also, known as the Earth Termination. This reference refers to the physical hardware, such as the copper conductors, rods, etc., that sits buried directly in the geology itself.[Read more…] about What’s the Difference between Earthing and Bonding