Electrical and related buildings technology
Electric motors are one of the most widely used items of electrical equipment. Improving motor efficiency benefits include, reduced power demand, lower...
For unbalance conditions the calculation of fault currents is more complex. One method of dealing with this is symmetrical components. Using symmetrical...
Power cables can basically be classified into earthed and unearthed cables, where earthed and unearthed refer to the application for which the cable is...
Motor starting and its associated problems are well-known to many people who have worked on large industrial processes. However, these things are, of course...
A couple of months ago I came Microsoft's OneNote and downloaded the 60 day free trail. Since then I have been using it regularly and now have a full license...
Per unit fault calculations is a method whereby system impedances and quantities are normalised across different voltage levels to a common base. By removing...
Using software in our work is essential for most of us and we are becoming even more dependant on it's use. While software is a great asset, many times...
Most installations involve some form of lightning protection system which is connected to an earth electrode. The function of the earth electrode is to...
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...
Anyone specifying or using electric motors should have a basic understanding how the insulation is related to temperature. Three classes of insulation...
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