Medium Voltage
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 up to and including 52 kV is written in the… Read more
Dec 14, 2011 | By Edvard Csanyi
Electronics
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 makes an enormous difference in their properties. Each capacitor type… Read more
Dec 13, 2011 | By elaina
Wind Power
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 turbine, with blades rotating a top a tall tower, is… Read more
Dec 12, 2011 | By Edvard Csanyi
Lighting
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 in their time. For example, since no connection could be… Read more
Dec 11, 2011 | By Edvard Csanyi
Geothermal Energy
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 reaching more than 4200 °C (7600 °F). A portion of… Read more
Dec 10, 2011 | By Edvard Csanyi
Medium Voltage
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. Manufacturers of electrical switchgear develop, in a continuous dialog with… Read more
Dec 10, 2011 | By Edvard Csanyi
Electrical Lectures
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 and voltage in the distribution system. Here we will discuss… Read more
Dec 09, 2011 | By Edvard Csanyi
Power Substation
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 mandate specific types of substation fire protection, with very little… Read more
Dec 07, 2011 | By Edvard Csanyi
Energy and Power
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 on power electronics. The main purpose of these systems is… Read more
Dec 05, 2011 | By Edvard Csanyi
Electric Motor
5 steps to choose the best motor for your application
For line-operated motors, loads fall into three general categories: constant torque, torque that changes abruptly, and torque that change gradually over time. Bulk material conveyors, extruders, positive displacement pumps, and compressors without air unloaders run at relatively steady levels of… Read more
Dec 03, 2011 | By Edvard Csanyi
Energy and Power
Guideline to Design Electrical Network for Building (Small Area)
Find out built up area in Sqft.of per flat per House/Dwelling unit. Multiply area in Sqft. by Load/Sqft according to following table: Type of Load Load/Sqft Industrial 100 Watt/Sqft Commercial 30 Watt/Sqft Domestic 15 Watt/Sqft Apply the diversity factor and… Read more
Dec 02, 2011 | By Jignesh Parmar
Energy and Power
Transient Voltage Surge Suppressors
Transient Voltage Surge Suppressor (TVSS) is a device that every data center or mission critical facility should have. Why should every data center have one and what does it do you ask? The purpose of a TVSS is to eliminate… Read more
Dec 01, 2011 | By Edvard Csanyi
