Is prevention better than cure? | Lightning Strike Prevention

Lightning Protection Design

Is prevention better than cure? | Lightning Strike Prevention

The most exciting concept to come out of the Lightning Protection sector for centuries is the idea of 'Lightning Strike Prevention'.

Now, preventing lightning itself is outside the scope of any working installation today.  And maybe something for the scientific communities to think over. However, preventing an STRIKE-attachment to a structure IS something that is here and now! Read More

Electrical Earthing Testing in Urban Environments

Earth Testing

Electrical Earthing Testing in Urban Environments

Electrical earthing testing.  We are asked frequently - How do you test an Earth in London?

Here’s the scenario.  You’re faced with Electrical earthing testing a substation that is located right in the middle of a heavily built-up area. With hard surfaces everywhere together with congested buried infrastructure in every direction.

Any lead deployment is invariably obstructed by something, e.g. roads, cars, walls, buildings, etc.  And, assuming the leads can be accommodated. A test is likely to suffer in-ground noise and/or interference from the city’s / town’s infrastructure.  Not to mention the curious passers-by: who would like nothing more than to see you struggle for a laugh by stealing your test leads when you’re back is turned. Read More

Isolated LPS Design - Isolated vs Non-isolated IEC 62305

Lightning Protection Design

Isolated LPS Design - Isolated vs Non-isolated IEC 62305

Isolated LPS

An example of a relatively recent innovation in protection concept introduced to the IEC standard IEC 62305. Is the Isolated LPS (Lightning Protection System).   The Isolated LPS can be described as protection measures (e.g. lightning conductors) that achieve sufficient 'separation' distance, electrically and/or physically, between that which is conducting the Lightning Current; and that which is to be protected from the effects of the lightning current.  This separation distance is what gives this methodology its label i.e. 'Isolated' design.  It does NOT mean the system is electrically isolated from earth (a common misconception).  It just refers to the physical distance achieved between the lightning current and the item being protected. Read More

Lightning Risk - Looking ahead at future trend

Lightning

Lightning Risk - Looking ahead at future trend

Lightning Risk. In a world increasingly driven by quantitative Risk Assessment (QRA) techniques it's important to understand what the predicted impacts are as a result of our current trajectory (as humans), i.e. the direction of travel that the population of planet earth seems to be following - in terms of climate change:

Increasing Lightning Risk trend

From recent research. Some in the Lightning community are predicting strike frequency increasing by +12% to +24% : the phenomenon appears to be worsening with climate change (2016). Read More

How We Answer Impossible Questions To Design SAFE Electrical Earthing Systems

Electrical Earthing

How We Answer Impossible Questions To Design SAFE Electrical Earthing Systems

Computer modelling for safe electrical earthing systems for Fault, EMI or Lightning Attachments

The use of computing power to check, evaluate or inspect concepts in all walks of life and business, is increasingly common.Whether you forecast the performance of stock and shares or building an Electrical Generation Plant.

For safe electrical earthing systems using engineering computer software such as CDEGS allows us to stress-test designs and systems to evaluate their performance under given conditions. Read More

What are the Earthing Safety Calculations?

Earthing System Design

What are the Earthing Safety Calculations?

Safety Calculations - you're overdue an update!

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

Even though the Safety Calculations for determining a 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 Design Safety Calculations. Read More

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