Anyone specifying or using electric motors should have a basic understanding how the insulation is related to temperature. Three classes of insulation...
The widely used United Sates standard ANSI/IEEE C37.2 'Electrical Power System Device Function Numbers, Acronyms, and Contact Designations' deals with...
This article gives an introduction to IEEE 485 method for the selection and calculation of battery capacity.
Fault calculations are one of the most common types of calculation carried out during the design and analysis of electrical systems. These calculations...
Within Europe the European Committee for Electrotechnical Standardization (CENELEC) has standardised the both the designation and colour of cables. ...
The windings of many medium and small sized transformers are protected by restricted earth fault (REF) systems. The illustration shows the principal of...
Ever wondered what kind of power an aircraft uses when parked at the airport stand. Normally the aircraft generates it own power, but when parked with...
The correct sizing of current transformers is required to ensure satisfactory operation of measuring instruments and protection relays. Several methods...
Years ago I was told that you should always try to write the best report you can. Many years later I still think on this as one of the better pieces of...
Various arguments exist around SF6 Gas Insulated (GIS) and Air Insulated (AIS) medium voltage switchgear. Recently we had to change a GIS design to AI...
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