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 | Edvard

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… Read more

Sep 03, 2012 | vinod ramireddy

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… Read more

Aug 30, 2012 | Edvard

Floating Neutral Impacts in 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 Consumer), the distribution system’s… Read more

Aug 27, 2012 | jiguparmar

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… Read more

Aug 25, 2012 | vinod ramireddy

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… Read more

Aug 22, 2012 | Edvard

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… Read more

Aug 21, 2012 | Edvard

An Overview Of Smart Power Grid

The present electric grids use the technology of 1970’s. But with the advancement in various concepts of power generation, problems associated with power outages and thefts, and also due to… Read more

Aug 20, 2012 | vinod ramireddy

Properties of Relay Contact System

The word “contact“ not only describes the conductive connection ot two mechanically separate electrical conductors, but also the conductive parts (contacts) even if they are not touching. Contacts comprise: Non… Read more

Aug 18, 2012 | Edvard

Site Conditions Impact on Caterpillar Genset Ratings

An engine rating is primarily limited by structural and thermal limits. These limits include maximum cylinder pressure during combustion, turbocharger speed, exhaust gas temperature and in natural gas engines, fuel type. Where an… Read more

Aug 17, 2012 | Edvard

Water-and-Pipe Analogy for Ohm’s Law

Ohm’s Law also makes intuitive sense if you apply it to the water-and-pipe analogy. If we have a water pump that exerts pressure (voltage) to push water around a ”circuit” (current)… Read more

Aug 15, 2012 | Edvard

Electric Shock Current, Where Does It Go?

As we’ve already know, electricity requires a complete path (circuit) to continuously flow. This is why the shock received from static electricity is only a momentary jolt: the flow of… Read more

Aug 13, 2012 | Edvard

Principles of Transformers in Parallel Connection (part 2)

Continued from first part – Principles of Transformers in Parallel Connection (1) All parallel units must be supplied from the same network. Secondary cabling from the transformers to the point… Read more

Aug 08, 2012 | jiguparmar

Basics of 3-phase Induction Motor (part 4)

When a motor is expected to operate in unfavorable conditions such as: Intermittent overloading Higher ambient temperatures A restricted temperature rise as for a spinning mill, A refinery or a… Read more

Aug 07, 2012 | Asif Eqbal

Principles of Transformers in Parallel Connection

For supplying a load in excess of the rating of an existing transformer, two or more transformers may be connected in parallel with the existing transformer. The transformers are connected… Read more

Aug 06, 2012 | jiguparmar