We are pleased to present below all posts archived in 'May 2014'. If you still can't find what you are looking for, try using the search box.
Traditionally generation of electricity has involved rotating machines to produce alternating sinusoidal voltage and current (a.c. systems). With the development of power electronics during the last ... read more..
Fault calculations are one of the most common types of calculation carried out during the design and analysis of electrical systems. These calculations...
Per unit fault calculations is a method whereby system impedances and quantities are normalised across different voltage levels to a common base. By removing...
IEC 62305 'Protection against lightning' requires a risk assessment be carried out to determine the characteristics of any lightning protection system...
This post is quick introduction and overview to different railway electrification voltages used in answer to a question sent in via email. While there...
This is the second post in a series of two on periodic electrical inspections. In the first post, I discussed how often inspections should be carried out...
The windings of many medium and small sized transformers are protected by restricted earth fault (REF) systems. The illustration shows the principal of...
Power cables can basically be classified into earthed and unearthed cables, where earthed and unearthed refer to the application for which the cable is...
Within Europe the European Committee for Electrotechnical Standardization (CENELEC) has standardised the both the designation and colour of cables. ...
Various techniques exist to enable the correct selection of batteries for UPS applications. The procedure described below is one of the more common. ...
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...
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