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effects of armature reaction in alternator

Armature Reaction in Alternator

Armature reaction in alternator is the effect of armature flux on the field flux (i. e., rotor ampere-turns). Read this … Continue Reading

Power Transformer testing

Power Transformer Testing Methods – Type, Routine & Special Tests

An electrical power transformer has to go through a number of transformer testing procedures for confirming its specifications and performances. … Continue Reading

why transformers are rated in kva

Why Transformers are Rated in kVA, Not in kW?

Transformer rating is expressed in kVA, not in kW.  Rating of a transformer or any other electrical machine reflects its load carrying … Continue Reading

Insulation Resistance Tester Megger

Insulation Resistance Test (IR Test) or Megger Test

Insulation Resistance or IR Test is carried out by maintenance engineers to ensure the healthiness of the overall insulation system … Continue Reading

Effects of Voltage and Frequency Variation on Transformers

Effects of Voltage and Frequency Variation on Transformers

The effects of voltage and frequency variation on the transformer is discussed in this article. Usually, power transformers are not … Continue Reading

Sulphur Hexafluoride SF6 Circuit Breakers Construction Working and Advantages

SF6 Circuit Breakers – Construction, Types and Working

In an SF6 Circuit breaker, sulphur hexafluoride gas is used as the arc quenching medium. The sulphur hexafluoride gas (SF6) is … Continue Reading

electrical substation - design criteria

Substation Design Criteria and Studies

The most appropriate type of substation depends on such factors as voltage level, load capacity, environmental considerations, site space limitations, … Continue Reading

circuit breaker rating

Circuit Breaker Ratings

The rating of circuit breaker is given according to the duties that are performed by it. For complete specifications, standard … Continue Reading

Lightning Arrester

Lightning Arrester – Location, Rating and Selection

A lightning arrester is connected to protect a piece of equipment from lightning and switching surges. Overvoltages may cause the … Continue Reading

Transformer Oil Filtration

Transformer Oil Filtration and Hot Oil Circulation Process

Transformer Oil Filtration Plant is a self-contained unit to upgrade the quantity of oil. The duty cycle begins from pumping … Continue Reading

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  • How to Optimize Energy Efficiency in Factories
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  • Vertical Core Type Induction Furnace (Ajax-Wyatt Furnace)
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