Following on from my post on railway electrification voltages, I thought an introduction to traction substations would be a good idea. Traction substations...
Modelica is an open source (free) software language for modelling complex systems. Having never used it before, I thought I would download a development...
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...
The following tables provide quick order of magnitude fault levels for a a range of typical low voltage situations.
The IET site has a video of a visit showing of a high tech meeting room developed at Napier University in Edinburgh. It a good demonstration of innovative...
The new standard IEC 61439 replaces the old 60439. Compared to the old standard, the new 61439 is a more clearly defined and takes into account the assembly...
From the earliest times, humans have found ways to create light. Pre-historic peoples used natural materials (moss, grass, etc.) soaked in animal fat and...
Variable frequency drives are widely used to control the speed of ac motors. This note looks at the mechanisms which enable drive units to control the...
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...
While not as popular as it once was, frame leakage protection does still have some use in some circumstances. In essence frame leakage is an earth fault...
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