Power systems theory - generation, transmissions and distribution
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...
Problems on achieving maximum voltage drop within an installation come up often. Depending where you live, local regulations will have different limits...
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...
Working in the vicinity of electrical equipment poses an hazard. In addition to electric shock hazard, fault currents passing through air causes Arc Flash...
Many questions sent in to the site are in connection with motor starting and in particular star-delta. For all but the simplest application, there is...
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 60228 is the International Electrotechnical Commission's international standard on conductors of insulated cables. Among other things, it defines a...
One of the requirements to ensuring that everything works is to have equipment selected, manufactured and verified [tested] to IEC standards. Not all equipment...
Electromechanical relays have been the traditional backbone of electrical protection systems. While over recent years these have been replaced by microprocessor...
GE have put together a time-lapse video shown flight take-off and landings at some airports. An interesting view:
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