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

Steel ladders, trays and baskets form the backbone of cable containment systems. Often these items need some form of surface treatment to prevent corrosion...

Power cables can basically be classified into earthed and unearthed cables, where earthed and unearthed refer to the application for which the cable is...

Low voltage (LV) switchrooms are common across all industries and one of the more common spatial requirements which need to be designed into a project...

In three phase systems, the use of transformers with three windings (or legs) per side is common.  These three windings are often connected in delta or...

Per unit fault calculations is a method whereby system impedances and quantities are normalised across different voltage levels to a common base.  By removing...

The following tables provide quick order of magnitude fault levels for a a range of typical low voltage situations.

Fault calculations are one of the most common types of calculation carried out during the design and analysis of electrical systems. These calculations...

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