Energy and Power
The Importance of the Correct PPE
Whilst awareness of the dangers of arc flash has continued to increase over the last few years, the number of incidents that are still occurring on a daily basis are shockingly high. Arc flash incidents are the greatest threat to… Read more
Oct 29, 2011 | By cgoulds
Electrical Lectures
What is the difference between MCB, MCCB, ELCB, and RCCB
This technical article briefly describes the most common breaker-related protection devices in low-voltage applications: MCB, MCCB, ELCB, and RCCB. We’ll describe their main characteristics and limitations and try to solve some misunderstandings and differences that many young engineers mix up…. Read more
Oct 25, 2011 | By Jignesh Parmar
Energy and Power
Aluminium or copper busbar trunking? Myth busted!
Following years of copper being the material of choice for high power busbar trunking in the UK, yet aluminium reigning supreme in the rest of the world, Schneider Electric takes a look at the case for aluminium over copper busbar… Read more
Oct 19, 2011 | By Edvard Csanyi
Electronics
Use Hall Effect Measurements to Characterize Materials
Written by Robert Green Engineers have been using Hall effect measurements to characterize materials since Edwin Hall discovered the phenomenon in 1879. The Hall effect is the generation of a voltage, called the Hall voltage, across a sample of a… Read more
Oct 19, 2011 | By elaina
Energy and Power
What is the Eddy Current?
Cant see this video? Click here to watch it on Youtube. Eddy currents are currents induced in conductors to oppose the change in flux that generated them. It is caused when a conductor is exposed to a changing magnetic field… Read more
Oct 13, 2011 | By Edvard Csanyi
Energy and Power
Neutral system – Single earthed or Multi earthed?
In distribution system three phase load is unbalance and non linear so the neutral plays an very important role in distribution system. Generally, distribution networks are operated in an unbalanced configuration and also service to consumers. This causes current flowing… Read more
Oct 13, 2011 | By Jignesh Parmar
Energy and Power
Insulating materials in electrical equipment
The reason for using insulating materials is to separate electrically the conducting parts of equipment from each other and from earthed components. Earthed components may include the mechanical casing or structure that is necessary to enable the equipment to be… Read more
Oct 05, 2011 | By Edvard Csanyi
Energy and Power
Supercapacitor – The future of energy storage
Supercapacitors have been around since 1966 but were never considered as a serious alternative for batteries. Ironically, we could have the said the same for AM radio before Armstrong developed the superheterodyne receiver. It may not be long before a… Read more
Oct 05, 2011 | By Olan
Cables
How to locate underground faults on cable?
A common approach to test cable and determine insulation integrity is to use a Hi-pot test. In a hi-pot test, a DC voltage is applied for 5 to 15 min. IEEE-400 specifies that the hi-pot voltage for a 15-kV class… Read more
Oct 04, 2011 | By Edvard Csanyi
Energy and Power
Typical Constructions Of Overhead Lines
Along streets, alleys, through woods, and in backyards, many of the distribution lines that feed customers are overhead structures. Because overhead lines are exposed to trees and animals, to wind and lightning, and to cars and kites, they are a… Read more
Oct 03, 2011 | By Edvard Csanyi
Energy and Power
What is the Static Var Compensator (SVC)?
Static Var Compensator is “a shunt-connected static Var generator or absorber whose output is adjusted to exchange capacitive or inductive current so as to maintain or control specific parameters of the electrical power system (typically bus voltage)”. SVC is based… Read more
Sep 25, 2011 | By Edvard Csanyi
Cables
Ionization (Corona Discharge) Tests
The ionization test is used primarily for detecting ionization (corona discharge) and slot discharge in generator windings. Both ionization and slot discharge may cause deterioration of insulation. Ionization generally occurs in voids inside the insulation within the ground shield section… Read more
Sep 24, 2011 | By Edvard Csanyi
Energy and Power
Virus-Powered Battery
Engineers at MIT (Massachusetts Institute of Technology) have figured out a way to deal with virus that is better than just killing them: they’re putting them to work. The researchers have developed a new technique wherein a key component of… Read more
Sep 16, 2011 | By Bipul Raman
Energy and Power
Ready for wind power? It’s time.
Galloping climate change and dwindling supplies of fossil fuels are driving ever-greater interest in renewable energy. As a result, wind energy is booming worldwide. Not since the heyday of the American farm windmill has wind energy grown at such a… Read more
Sep 15, 2011 | By Edvard Csanyi
Energy and Power
Ohm’s Law – The Resistance
It is intuitive that voltage and current would be somehow related. For example, if the potential difference between two ends of a wire is increased, we would expect a greater current to flow, just like the flow rate of gas… Read more
Sep 02, 2011 | By Edvard Csanyi
