Various arguments exist around SF6 Gas Insulated (GIS) and Air Insulated (AIS) medium voltage switchgear. Recently we had to change a GIS design to AI...
IEC 60287 "Calculation of the continuous current rating of cables (100% load factor)" is the International Standard which defines the procedures and equations...
Nikola Tesla was born exactly at midnight on July 10, 1856 in the tiny village of Smiljan, Lika in Croatia. In his late teens, Tesla left the village to...
Circuit breakers are switching devices whose primary function is to isolate parts of an electrical distribution system in the even of abnormal conditions...
IEC 60228 is the International Electrotechnical Commission's international standard on conductors of insulated cables. Among other things, it defines a...
GE have put together a time-lapse video shown flight take-off and landings at some airports. An interesting view:
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...
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...
The following tables provide quick order of magnitude fault levels for a a range of typical low voltage situations.
For unbalance conditions the calculation of fault currents is more complex. One method of dealing with this is symmetrical components. Using symmetrical...
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