Consequences of internal arc for personal safety and MV electrical equipment
The aim of this article is to describe the internal arc phenomenon, its consequences for safety, current methods of limiting them and current regulations in general for equipment used in… Read more
Dec 23, 2011 | By Edvard Csanyi
What is HIPOT Testing (Dielectric Strength Test)?
Hipot Test is short name of high potential (high voltage) Test and it is also known as Dielectric Withstand Test. A hipot test checks for “good isolation.” Hipot test makes… Read more
Dec 22, 2011 | By jiguparmar
When we started to use PLCs after all?
PLCs (Programmable Logic Controllers) were first introduced in the 1960’s. The primary reason for designing such a device was eliminating the large cost involved in replacing the complicated relay based… Read more
Dec 21, 2011 | By Edvard Csanyi
Earthing in electrical network – purpose, methods and measurement
The main reason for doing earthing in electrical network is for the safety. When all metallic parts in electrical equipment are grounded then if the insulation inside the equipment fails… Read more
Dec 19, 2011 | By jiguparmar
Major difference between a 2-phase and a 3-phase stator
For purposes of explaining rotor movement, let’s assume that we can place a bar magnet in the center of the stator diagrams of figure 0. We’ll mount this magnet so… Read more
Dec 17, 2011 | By Edvard Csanyi
Internal arc testing of MV switchgear – IEC 62271-200 (part three)
Continued from: Internal arc testing of MV switchgear – IEC 62271-200 (part two) The following chapter describes the development of a new gas-insulated switchgear generation GHA [4] for primary distribution… Read more
Dec 16, 2011 | By Edvard Csanyi
Internal arc testing of MV switchgear – IEC 62271-200 (part two)
Continued from: Internal arc testing of MV switchgear – IEC 62271-200 (part one) The current valid international standard for metal-enclosed switchgear and controlgear for rated voltages from 1 kV and… Read more
Dec 14, 2011 | By Edvard Csanyi
Capacitor Types
In the market, there are several types of capacitors that have been manufactured. Although all capacitors work essentially the same way, key differences in the construction of different capacitor types… Read more
Dec 13, 2011 | By elaina
What’s Inside a Wind Turbine?
Cant see this video? Click here to watch it on Youtube. There are two basic types of wind turbine design – horizontal and vertical axis. At present, the horizontal axis… Read more
Dec 12, 2011 | By Edvard Csanyi
The Physics of Light
Man has always been fascinated by light and has constantly striven to unravel its mysteries. History has produced various theories that today strike us as comical but were seriously propounded… Read more
Dec 11, 2011 | By Edvard Csanyi
How a Geothermal Plant Works?
Understanding geothermal energy begins with an understanding of the source of this energy – the earth’s internal heat. The Earth’s temperature increases with depth, with the temperature at the center… Read more
Dec 10, 2011 | By Edvard Csanyi
Internal arc testing of MV switchgear – IEC 62271-200 (part one)
Medium voltage air-insulated and gas-insulated switchgear for electrical transmission and distribution are designed and tested in accordance to national and international standards to guarantee high reliability of operation and safety…. Read more
Dec 10, 2011 | By Edvard Csanyi
What is the resonance phenomena?
The use of both capacitive and inductive devices in distribution systems leads to resonance phenomena, resulting in extremely high or low impedance values. These variations in impedance modify the current… Read more
Dec 09, 2011 | By Edvard Csanyi
Why and how much for fire protection of power plant?
Fire protection measures can be subdivided into life-safety and investment categories. Life-safety measures are considered to be mandatory by fire codes, building codes, or safety codes. As such, the codes… Read more
Dec 07, 2011 | By Edvard Csanyi
Flexible AC Transmission System – What and Why?
Flexible AC Transmission System (FACTS) have been evolving to a mature technology with high power rating. This technology has wide spread application, became a top rate, most reliable one, based… Read more
Dec 05, 2011 | By Edvard Csanyi