Wind Power
Geographical Variation in the Wind Resource
Ultimately the winds are driven almost entirely by the sun’s energy, causing differential surface heating. The heating is most intense on land masses closer to the equator, and obviously the greatest heating… Read more
Jan 04, 2013 | By Edvard Csanyi
Energy Efficiency
Brightness, Lamp Life and Efficiency of LED Fixtures
A typical LED fixture comprises four major component parts: an LED emitter, the fixture’s heat sink, driver and dimming control, and augmenting optics. The emitter includes the die, a thermal… Read more
Jan 03, 2013 | By Edvard Csanyi
Energy and Power
Lighting Circuits Connections for Interior Electrical Installations (3)
Continued from 2nd part: Lighting Circuits Connections for Interior Electrical Installations (2) The main reason for installing an emergency lighting system is to enable the building to meet fire safety… Read more
Jan 02, 2013 | By Emmanouil Angeladas
Electronics
The Future of MOS-Controlled Thyristor (MCT)
The MCT is type of power semiconductor device that combines the capabilities of thyristor voltage and current with MOS gated turn-on and turn-off. It is a high power, high frequency,… Read more
Jan 01, 2013 | By Edvard Csanyi
News
Thank you very much, wish you all the best in 2013!
Well engineers, here we are… at the very end of this year! 2012 was very active for us, that’s for sure. EEP’s team worked very hard during year and brought… Read more
Dec 31, 2012 | By Edvard Csanyi
Lighting
Lighting Circuits Connections for Interior Electrical Installations (2)
Continued from first part: Lighting Circuits Connections for Interior Electrical Installations In modern internal electrical installations, domestic and professional, there is a need for lighting installations in staircases and installation… Read more
Dec 31, 2012 | By Emmanouil Angeladas
Electric Motor
PLC Application For Speed Control of AC Motors With Variable Speed (VS) Drive
A common PLC application is the speed control of AC motors with variable speed (VS) drives. The diagram in Figure 1 shows an operator station used to manually control a… Read more
Dec 29, 2012 | By Edvard Csanyi
Transformers
Importance of Transformer Inrush Current
When a transformer is taken off-line, there will be a certain amount of residual flux that can remain in the core due to the properties of the magnetic core material…. Read more
Dec 28, 2012 | By Edvard Csanyi
Energy and Power
Flexibility and Reliability of Numerical Protection Relay
The first protection devices based on microprocessors were employed in 1985. The widespread acceptance of numerical technology by the customer and the experiences of the user helped in developing the… Read more
Dec 27, 2012 | By jiguparmar
High Voltage
7 Golden Safety Rules for Working In HV Laboratory
Employees performing operations and testing work in high voltage laboratory are exposed to a greater hazard than most other employees. Safety rules MUST NOT be seen as a means of limiting… Read more
Dec 26, 2012 | By Edvard Csanyi
Industrial Automation
SCADA As The Heart Of a Distribution Management System
At a high level, the elements of a distribution automation system can be divided into three main areas: SCADA application and server(s) DMS applications and server(s) Trouble management applications and… Read more
Dec 25, 2012 | By Edvard Csanyi
Energy and Power
Few Words About Digital Protection Relay
Around 1980s the digital relay entered the market. Compared to the Solid State Relay, the digital relay takes the advantages of the development of microprocessors and microcontrollers. Instead of using… Read more
Dec 24, 2012 | By jiguparmar
Energy and Power
Inspection and Test Procedures for Metal-Enclosed Busways
Visual and Mechanical Inspection Electrical Tests Test Values Test Values – Visual and Mechanical Test Values – Electrical Tables: TABLE 100.12 – US Standard Fasteners Bolt-Torque Values for Electrical Connections… Read more
Dec 22, 2012 | By Edvard Csanyi
Hydropower
Diverting the River Flow With Dam
Introduction to Dams Dam Characteristics Embankment Dams Homogeneous dams Zoned embankment dams Embankments dams with membrane Concrete Dams Gravity dams Buttress dams Arch and Cupola dams Other Dam types Missouri… Read more
Dec 21, 2012 | By Edvard Csanyi
Energy and Power
Short-Circuit Switching Capacity Definition
The switching capacity is the r.m.s value of a current at a given power factor cosφ as well as a given rated voltage at which a switchgear or a fuse… Read more
Dec 20, 2012 | By Edvard Csanyi
