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Technical Articles

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… Read more

Sep 22, 2012 | By Edvard

Surge Protection of Electronic Equipment
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… Read more

Sep 21, 2012 | By Edvard

RSR-72 Static relay for motor re-start and reacceleration
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… Read more

Sep 20, 2012 | By Edvard

Purpose of Equipotential bonding
High Voltage

Design of Overhead Transmission Line Foundation

The foundation is the name given to the system which transfers to the ground the various steady state (dead) and variable (live) loads developed by the transmission tower and conductors…. Read more

Sep 19, 2012 | By Edvard

Design of Overhead Transmission Line Foundation
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,… Read more

Sep 17, 2012 | By Edvard

Definition of Harmonics and Their Origin
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… Read more

Sep 14, 2012 | By Edvard

Functions Performed by Electrical Switchgear
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… Read more

Sep 12, 2012 | By Edvard

Tesla meets King Peter II of Yugoslavia on July 15, 1942
Electric Motor

LT / Medium / HT VFD Used In the Industry (1)

In modern plants, there are number of drives like Milling Plant Drive, Hydraulic Drive, DC Motor Drive and AC Motor Drive of adequate capacities are available. There is lot of… Read more

Sep 10, 2012 | By sprabakar22

LT / Medium / HT Variable Frequency Drives (VFD) In the Industry

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… Read more

Sep 08, 2012 | By Paul Blythe

Under the hood of LEDs (Light emitting diodes)
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… Read more

Sep 06, 2012 | By Edvard

Transformer Heat, Copper and Iron Losses

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