We are pleased to present below all posts archived in 'June 2009'. If you still can't find what you are looking for, try using the search box.
Years ago I was told that you should always try to write the best report you can. Many years later I still think on this as one of the better pieces of advice. Not only does this apply ... read more..
Often us engineers get so bogged down in equations, using software, producing drawings and writing specifications that this becomes the sole focus. Good engineering design needs to go b... read more..
Alternating current (a.c.) is the backbone of modern electrical power distribution. In this article I’ll be pulling some of the more important concepts...
Over the past year or so I've been involved in on going discussions related to referring fault levels from the secondary of a transformer to the primary...
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...
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...
When selecting a cable, the performance of the cable under fault conditions is an important consideration. It is important that calculations be carried...
Carrying out a protection system discrimination study is critical to ensure the correct functioning of the electrical system in the event of faults. ...
Fault calculations are one of the most common types of calculation carried out during the design and analysis of electrical systems. These calculations...
We have a sister note to this (Robots - Interesting Video), in which I have posted some videos of interesting robots developed by commercial corporations...
The following tables provide quick order of magnitude fault levels for a a range of typical low voltage situations.
Per unit fault calculations is a method whereby system impedances and quantities are normalised across different voltage levels to a common base. By removing...
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