Edvard Csanyi
1750 awesome technical articles
Hi, I'm an electrical engineer, programmer and founder of EEP - Electrical Engineering Portal. I worked twelve years at Schneider Electric in the position of technical support for low- and medium-voltage projects and the design of busbar trunking systems.
I'm highly specialized in the design of LV/MV switchgear and low-voltage, high-power busbar trunking (<6300A) in substations, commercial buildings and industry facilities. I'm also a professional in AutoCAD programming.
Biography: https://electrical-engineering-portal.com/edvard-csanyi
Electronics
Power Semiconductor Device – Transistor
Power transistors are used in applications ranging from a few to several hundred kilowatts and switching frequencies up to about 10 kHz. Power transistors used in power conversion applications are generally npn type. The power transistor is turned on by… Read more
Oct 27, 2011 | By Edvard Csanyi
Protection
Short circuit protection of generator’s stator windings by overcurrent relays
If current transformers are not connected in the neutral ends of wye-connected generator windings, or if only the outgoing leads are brought out, protective devices can be actuated, as in Figure 1, only by the short-circuit current supplied by the… Read more
Oct 24, 2011 | By Edvard Csanyi
Low Voltage
How Low-Voltage Air Circuit Breaker Works?
A low-voltage circuit breaker is one which is suited for circuits rated at 600 volts or lower. One of the most commonly used low-voltage air circuit breakers is the molded case circuit breaker (picture above). A circuit can be connected… Read more
Oct 23, 2011 | By Edvard Csanyi
Transformers
Forced ventilation cycles in Trihal transformers
Transformers, when in operation, are subject to no-load losses and load losses. This energy causes a rise in the temperature of the transformer’s active part, i.e. the magnetic core and the windings. It is therefore normal for the transformer to… Read more
Oct 22, 2011 | By Edvard Csanyi
Electronics
Insulated-Gate Bipolar Transistor (IGBT)
The IGBT has the high input impedance and high-speed characteristics of a MOSFET with the conductivity characteristic (low saturation voltage) of a bipolar transistor. The IGBT is turned on by applying a positive voltage between the gate and emitter and,… Read more
Oct 21, 2011 | By Edvard Csanyi
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
Medium Voltage
VISAX – Medium Voltage Metal-clad Switchgear
Wherever electrical power must be distributed and used with maximum availability and reliability, we have the experience and the know-how to offer you the equipment which best meets these needs. To meet today’s demands for quality products, Schneider Electric has… Read more
Oct 17, 2011 | By Edvard Csanyi
Electronics
Power Semiconductor Devices – Thyristor and Triac
The thyristor, also called a silicon-controlled rectifier (SCR), is basically a four-layer three-junction pnpn device. It has three terminals: anode, cathode, and gate. The device is turned on by applying a short pulse across the gate and cathode. Once the… Read more
Oct 15, 2011 | By Edvard Csanyi
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
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 voltage switchgear cubicles. Manual racking in and racking out circuit… Read more
Oct 11, 2011 | By Edvard Csanyi
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 is US$965 per installed kW which is in line with… 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 structure that is necessary to enable the equipment to be… Read more
Oct 05, 2011 | By Edvard Csanyi
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
Solar Power
How solar collectors works?
Solar energy (solar radiation) is collected by the solar collector’s absorber plates. Selective coatings are often applied to the absorber plates to improve the overall collection efficiency. A thermal fluid absorbs the energy collected. There are several types of solar… Read more
Sep 26, 2011 | By Edvard Csanyi
