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

The IEC publishes a series of documents and rules governing the preparation of documents, drawings and the referencing of equipment.   Depending on country...

The following tables provide quick order of magnitude fault levels for a a range of typical low voltage situations.

The other day I was reading 'Night of the New Magicians' by Mary Pope Osborn with my son.  The story is about a young boy and girl who travel back in time...

Have an opinion or something to say, want to ask or answer questions, share your knowledge then use our site to do it . As a community of people interested...

Problems on achieving maximum voltage drop within an installation come up often. Depending where you live, local regulations will have different limits...

In an earlier note on the site [Photovoltaic (PV) - Electrical Calculations], the theory of solar (PV) cell calculations was introduced.  In particular...

The (relatively new) switchgear and control gear standard, IEC 61439 'Low-voltage switchgear and controlgear assemblies' has three methods which can be...

At the beginning of the year China put the world's first 1,000 kV UHV transmission system into operation. Transmitting power at over a million volts is...

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...