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Generation

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Current 2BTransformer 2BConstruction 2Bor 2BCircuit 2BDiagram 2Band 2BSymbol

Current Transformer (CT) – Construction and Working Principle

  • Categories Circuit Breaker, Electrical Machines, Generation, Instrumentation, Measurement, Power System, Substation, Switchgear, Transformer

A current transformer (CT) is a type of transformer that is used to measure AC current. It produces an alternating current (AC) in its secondary which is proportional to the AC …

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Aero-derivative Gas Turbines

Types of Gas Turbine Engines

  • Categories Electrical Machines, Generation, Power System

For an individual generator that is rated above 1000 kW, and is to be used in the oil industry, it is usual practice to use a gas turbine as the …

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Induction Motor and Transformer

Comparison between Induction Motor and Transformer

  • Categories Single Phase Motors, Alternator, Basic Electrical, Electrical Machines, Generation, Synchronous Motor, Three Phase Induction Motor, Transformer

An induction motor may be considered to be a transformer with a rotating short-circuited secondary. The stator winding corresponds to the transformer primary and the rotor winding to the transformer …

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Low voltage Switchgear

Low Voltage Switchgear

  • Categories Power System, Circuit Breaker, Electrical Relays, Generation, Instrumentation, Measurement, Substation, Switchgear

As per IEC 60947, switchgears with rated voltages up to 1000 V ac and 1500 V dc are termed as low voltage switchgear. The term ‘switchgear’ is a generic term …

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substation earthing

Substation Earthing System Design

  • Categories Power System, Basic Electrical, Circuit Breaker, Electrical Relays, Generation, Substation, Switchgear, Transformer

We have already given an introduction to substation earthing system in an article published earlier. Today we are going to discuss the design of substation earthing system. Before 1960s the …

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back up protection

Primary and Back-up Protection in Power System

  • Categories Electrical Relays, Basic Electrical, Circuit Breaker, Electrical Machines, Generation, Power System, Substation, Switchgear, Transformer

Primary and Back-up Protection Primary protection (Main protection) is the essential protection provided for protecting an equivalent/machine or a part of the power system. As a precautionary measure, addition protection …

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Stroboscopic effect in flourescent lamp

Stroboscopic Effect in Fluorescent Lamps

  • Categories Basic Electrical, Electric Vehicles, Electrical Circuits, Electrical Machines, Electronics, Generation, Power System, Substation

The Stroboscopic Effect in Fluorescent lamp is a phenomenon which causes running or moving equipment to appear stationary or appear to be operating slower than they actually are. Fluorescent materials …

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load forecasting in power system

Load Forecasting – Purpose, Classification and Procedure

  • Categories Power System, Alternator, Basic Electrical, Generation, Measurement, Substation, Switchgear, Transformer

What is Load Forecasting? Electrical energy cannot currently be stored in large amounts. It has to be generated whenever there is a demand for it. It is, therefore, imperative for …

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Sag in Transmission lines

Sag in Overhead Transmission Lines

  • Categories Power System, Circuit Breaker, Generation, Locomotives, Substation, Switchgear

The difference in level between points of supports and the lowest point on the conductor is called sag in overhead transmission lines. Sag in Hot and Cold Day While erecting …

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