Power systems theory - generation, transmissions and distribution
The calculation of current in a three phase system has been brought up on our site feedback and is a discussion I seem to get involved in every now and...
In an earlier note on the site [Photovoltaic (PV) - Electrical Calculations], the theory of solar (PV) cell calculations was introduced. In particular...
Dielectrics (insulating materials for example) when subjected to a varying electric field, will have some energy loss. The varying electric field causes...
This morning I was explaining how differential protection works to a junior engineer. To give him something to read I opened up the NPAG (Network Protection...
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Lead acid batteries are cost effect and reliable, making them suitable for many applications.This note examines topics of interest associated with the...
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...
The term 'N+1' relates to redundancy and simply means that if you required 'N' items of equipment for something to work, you would have one additional...
In the previous note we looked at the approach taken by the standard to the sizing of cables and illustrated this with an example. We then looked at one...
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...
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