Following on from my post on railway electrification voltages, I thought an introduction to traction substations would be a good idea. Traction substations...

A single phase system is perhaps the most common type of system most people are familiar with. This is what people have in their homes and what appliances...

Our IEE cable sizing was wrote a few years ago and had become rough around the edges. I thought it was time to give the tool a service. Unfortunately when...

This article gives an introduction to IEEE 485 method for the selection and calculation of battery capacity.

This morning I was explaining how differential protection works to a junior engineer. To give him something to read I opened up the NPAG (Network Protection...

Often document control is dictated by project requirements, for example a particular organisation may have an existing numbering system. Existing company...

One of the requirements to ensuring that everything works is to have equipment selected, manufactured and verified [tested] to IEC standards. Not all equipment...

How often installations are inspected is up to the owner of the installation, provided such durations do not exceed any regulatory maximums in force. ...

I was reminded of Occam's Razor while reading a book. It's quite a simple principal of logic which has stood the test of time and is accepted as central...

Battery powered cars are a hot topic and widely debated. The pros, cons, issues and time frames can be talked about endlessly. An article by the Telegraph...