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Electrical Machines

Transformer Percentage Impedance Testing

How to Test Percentage Impedance of Transformer?

This article covers transformer impedance testing, one of the acceptances tests for new transformers, and a method for routine testing. … Continue Reading

Substation-components-equipment-layout

Electrical Substation: Equipment, Types, Components & Functions

An electrical substation is an integral part of a generation, transmission and distribution system. A substation can interrupt or establish … Continue Reading

Transformer Bushing Types

Transformer Bushing Types : RIP Bushing vs OIP Bushing

Transformer bushing types are categorized based on their material, manufacturing, and design mainly into the following types: OIP (Oil-Impregnated Paper) … Continue Reading

Synchronous 2Bmotor 2Bstarting 2Bmethods

Starting Methods for Synchronous Motor

Synchronous motors are not self-starting. Some additional devices should be used to start the motor. Basically, there are two methods … Continue Reading

dc motor starter need working

Need of a Starter (3 & 4 Point) in DC Motors

We use 3 and 4 point starters in DC motors. What happens if a DC motor is started without a … Continue Reading

Current Transformer Construction

Current Transformer (CT) – Construction and Working Principle

A current transformer (CT) is a type of transformer that is used to measure AC current. It produces an alternating current … Continue Reading

Practical 2Btransformer 2Bon 2Bno 2Bload

Practical Transformer on No Load

Please read Ideal Transformer and Practical Transformer before continuing. Consider a practical transformer on no load i.e., secondary on open-circuit as … Continue Reading

Why 2BCT 2Bsecondary 2Bshould 2Bnot 2Bopen

Why Current Transformer (CT) Seconday Should not be Open ?

Amazed why secondary of current transformer should not be open? If it is left open it may destroy the current … Continue Reading

ideal 2Btransformer 2Bphasor 2Bdiagram

Ideal Transformer and Practical Transformer

Ideal Transformer An ideal transformer is one that has no winding resistance no leakage flux i.e., the same flux links … Continue Reading

properties 2Bof

Properties of Good Transformer Oil

Even though the basic functions of the oil used in transformers are heat conduction and electrical insulation, there are many other properties which … Continue Reading

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  • Three-Phase Transformer Connections: Y–Y, Δ–Δ, Y–Δ, Δ–Y, V–V, T-T
  • Delta-Delta (Δ–Δ) Transformer Connection: Advantages, Working, and Application
  • Advantages and Disadvantages of Transformers
  • Junction Diodes: Construction, Working Principle, and I-V Characteristics
  • How to Accurately Read and Interpret Resistor Bands for Your Next Design Project

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  • Three-Phase Transformer Connections: Y–Y, Δ–Δ, Y–Δ, Δ–Y, V–V, T-T
  • Delta-Delta (Δ–Δ) Transformer Connection: Advantages, Working, and Application
  • Advantages and Disadvantages of Transformers
  • Junction Diodes: Construction, Working Principle, and I-V Characteristics
  • How to Accurately Read and Interpret Resistor Bands for Your Next Design Project
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