High Voltage
Be extremely careful when racking in and racking out circuit breaker
There are many reasons causes arc flash incidents. Some of arc flash explosions occur when substation personnel insert or remove (rack in or out) circuit breakers from low or high… Read more
Oct 11, 2011 | By Edvard Csanyi
Power Substation
Complete overview of lightning arresters (part 3)
Continued from article Complete overview of lightning arresters (part 2) There are several types of lightning arresters in general use. They differ only in constructional details but operate on the… Read more
Oct 08, 2011 | By jiguparmar
Hydropower
What would be the cost of micro hydro plant?
In the examples examined in the five countries, the capital cost13 of micro hydro plants, limited to shaft power, ranged from US$714 (Nepal, Zimbabwe) to US$1,233 (Mozambique). The average cost… Read more
Oct 07, 2011 | By Edvard Csanyi
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… 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… 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…. 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… Read more
Oct 03, 2011 | By Edvard Csanyi
