We are pleased to present below all posts archived in 'July 2011'. If you still can't find what you are looking for, try using the search box.
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The windings of many medium and small sized transformers are protected by restricted earth fault (REF) systems. The illustration shows the principal of...
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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The other day I came across an article in Technology Review on the development of a smart transformer. A professor at North Carolina State University is...
A quick post in connection with an email question: Live Tank - the circuit breaker the switching unit is located in an insulator bushing which is live...
Within Europe the European Committee for Electrotechnical Standardization (CENELEC) has standardised the both the designation and colour of cables. ...
If you are working on a large plan, get the real coordinates [latitude, longitude] for two or more points and add them to the drawing. That way you can...
The image (reproduced from IEC 60909) shows a typical fault in an ac system. From the illustration it can seen that there is an initial dc component ...
Electromagnetic compatibility (EMC) is the study of coordinating electromagnetic fields give off equipment, with the withstand (compatibility) of other...
If you want to check a circuit is dead (not live), you should always use the three point method. First check a known live circuit, then check the dead...
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