A battery consists of one or more cells, each of which use stored chemical energy to produce electrical energy, There are many types of cells and these...
Working in the vicinity of electrical equipment poses an hazard. In addition to electric shock hazard, fault currents passing through air causes Arc Flash...
I have been thinking recently that there appears to be less professional integrity around than when I first started my career in electrical engineering...
Before the technical, some general information. E-ink display are found in a lot of e-readers, some mobile phones and similar devices and the intent is...
Capacitors are widely used in electrical engineering for functions such as energy storage, power factor correction, voltage compensation and many others...
The (relatively new) switchgear and control gear standard, IEC 61439 'Low-voltage switchgear and controlgear assemblies' has three methods which can be...
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...
The following tables provide quick order of magnitude fault levels for a a range of typical low voltage situations.
Traditionally substations have used circuit breakers, current transformers (CT), voltage transformers (VT) and protection relays all wired together using...
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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