Cable insulation is used to provide electrical separation between conductors of  a cable.  During the historical development of cables, numerous types...

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

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...

Within Europe the European Committee for Electrotechnical Standardization (CENELEC) has standardised the both the designation and colour of cables.   ...

The image (reproduced from IEC 60909) shows a typical fault in an ac system.  From the illustration it can seen that there is an initial dc component ...

A recurring theme on our forums is cable sizing. Now many installations are unique and require special consideration. However, a lot of the time things...

The windings of many medium and small sized transformers are protected by restricted earth fault (REF) systems. The illustration shows the principal of...

Fault calculations are one of the most common types of calculation carried out during the design and analysis of electrical systems. These calculations...

We have had the Wiki with us for a long time now, but at last I have decided to say bye bye – more details on why below.

The standard aims to consolidate AC and traction voltages within the industry and defines the following bands: band 1 - A.C. systems 100 V to 1...