Energy and Power
Testing and Commissioning of Metal-Clad Switchgear
Electrical testing and commissioning of Metal-Clad switchgear is essential to the safe start for the first time, regardless of its size, type or industry. This article covers testing and start-up / commisioning procedures for all the components of medium voltage… Read more
Sep 24, 2012 | By Edvard Csanyi
Energy and Power
Surge Protection of Electronic Equipment
Generally, power circuits have components that have large thermal capacities, which make it impossible for them to attain very high temperatures quickly except during very large or long disturbances. This requires correspondingly large surge energies. Also, the materials that constitute… Read more
Sep 22, 2012 | By Edvard Csanyi
Energy and Power
Introduction to Static Protection Relays
The term ‘static’ implies that the relay has no moving parts. This is not strictly the case for a static relay, as the output contacts are still generally attracted armature relays. In a protection relay, the term ‘static’ refers to… Read more
Sep 21, 2012 | By Edvard Csanyi
Energy and Power
What is the purpose of equipotential bonding?
Equipotential bonding is essentially an electrical connection maintaining various exposed conductive parts and extraneous conductive parts at substantially the same potential. An earthed equipotential zone is one within which exposed conductive parts and extraneous conductive parts are maintained at substantially… Read more
Sep 20, 2012 | By Edvard Csanyi
Energy and Power
Definition of Harmonics and Their Origin
The Fourier theorem states that all non-sinusoidal periodic functions can be represented as the sum of terms (i.e. a series) made up of: A sinusoidal term at the fundamental frequency, Definition of Harmonics and Their Origin Sinusoidal terms (harmonics) whose… Read more
Sep 17, 2012 | By Edvard Csanyi
Energy and Power
Functions Performed by Electrical Switchgear
National and international standards define the method for making electrical distribution circuits as well as the purpose and functions of switchgear. There are three main functions, namely: Circuit protection takes three main fault types into account: Overloads, Short-circuits (Both of which… Read more
Sep 14, 2012 | By Edvard Csanyi
Energy and Power
Nikola Tesla – Everything is the Light
Once, in 1899, Nikola Tesla had an interview with certain journalist John Smith, when Tesla said “Everything is the Light“. In one of its rays is the fate of nations, each nation has its own ray in that great light source,… Read more
Sep 12, 2012 | By Edvard Csanyi
Electronics
Under the Hood of LEDs (Light Emitting Diodes)
LED lamps, or Light Emitting Diodes, are becoming more and more common. Having been used for some time in products such as digital watches, remote controls and brake lights, they are now being seen in many more applications such as… Read more
Sep 08, 2012 | By Paul Blythe
Energy and Power
Transformer Heat, Copper and Iron Losses
The thermal ratings of a transformer are determined by the following three factors: The amount of heat produced in the windings and connections. The amount of heat produced in the iron core. How effectively the heat can be removed from… Read more
Sep 06, 2012 | By Edvard Csanyi
Energy and Power
Getting Electricity From Solid Oxide Fuel Cell
Abstract Introduction Fuel Cell Working Principle of SOFC Materials Selection and Processing Cathode Electrolyte Anode Interconnection Types of SOFC Merits and Demerits Applications Stationary energy sources Transportation Military applications SOFC-GT Conclusions Electricity is no more a luxury but it has… Read more
Sep 03, 2012 | By vinod ramireddy
Electric Motor
Motor protection depending on size and voltage level
Motor protections vary widely depending on the size of the motor and voltage level involved, thus only the more common ones are discussed in this technical article. Index Motor Instantaneous Over-current Protection Motor Timed Over-Current Protection Thermal OverLoad Motor Ground… Read more
Aug 30, 2012 | By Edvard Csanyi
Energy and Power
What is a Floating Neutral and how does it affect the power distribution
If the Neutral Conductor is opened, broke or lost at either of its source side (distribution transformer, generator) or at load side (distribution panel of a consumer), the distribution system’s neutral conductor will “float” or lose its reference ground Point…. Read more
Aug 27, 2012 | By Jignesh Parmar
Energy and Power
An Overview of Combined Cycle Power Plant
The Combined Cycle Power Plant or combined cycle gas turbine, a gas turbine generator generates electricity and waste heat is used to make steam to generate additional electricity via a steam turbine. The gas turbine is one of the most… Read more
Aug 25, 2012 | By vinod ramireddy
Energy and Power
High resistance grounding equipment in mining applications
High resistance grounding equipment or permanently installed electrical distribution systems used in mines should be selected and applied as recommended for process industries. When mobile equipment is connected to the distribution system the grounding equipment and the ground fault protection should be designed… Read more
Aug 22, 2012 | By Edvard Csanyi
Energy and Power
Overview Of Power System Architecture
The various components of a power system can be arranged in different ways. The complexity of the resulting architecture determines the availability of electrical energy and the cost of the investment. Selection of an architecture for a given application is… Read more
Aug 21, 2012 | By Edvard Csanyi
