The correct sizing of current transformers is required to ensure satisfactory operation of measuring instruments and protection relays. Several methods...

Often document control is dictated by project requirements, for example a particular organisation may have an existing numbering system. Existing company...

Modelica is an open source (free) software language for modelling complex systems. Having never used it before, I thought I would download a development...

I was reminded of Occam's Razor while reading a book. It's quite a simple principal of logic which has stood the test of time and is accepted as central...

How often installations are inspected is up to the owner of the installation, provided such durations do not exceed any regulatory maximums in force. ...

Everything physical in electrical engineering from insulations to conductors revolves around materials. Here we are listing common materials along with...

I have been thinking recently that there appears to be less professional integrity around than when I first started my career in electrical engineering...

I'm a fan of using manufacturers catalogues. There are two main reasons for this. Firstly, if your involved in the purchase of equipment, you will likely...

Electromechanical relays have been the traditional backbone of electrical protection systems.  While over recent years these have been replaced by microprocessor...

The other day I was talking to a colleague who is a building services consultant.  Despite regularly specifying dry-type/cast resin transformers he was...