An amplidyne is an electromechanical amplifier with the characteristics of a rotating machine. It was invented prior to the second world war by Ernst Alexanderson. An amplidyne is a special-purpose DC generator. It supply large DC currents, … Continue Reading about Amplidyne – Working and Application
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Electrical Machines
What are Protective Relays? | Types and Working
What is a Protective Relay? The protective relay was invented more than 160 years ago. During the last 60 years, it has undergone considerable … Continue Reading about What are Protective Relays? | Types and Working
Learn All About Rectifier Transformer
What is the Rectifier Transformer? Rectifier transformers are different from normal power and distribution transformers because they are special … Continue Reading about Learn All About Rectifier Transformer
Armature Reaction in DC Generator
To understand the concept of armature reaction in DC generator, please go through the previous articles describing the construction of a DC generator. … Continue Reading about Armature Reaction in DC Generator
DC Generator Characteristics
DC generator characteristics are the relations between excitation, terminal voltage and load exhibited graphically by means of curves. These … Continue Reading about DC Generator Characteristics
Power System
Power Transformer and Distribution Transformer
The power transformer and distribution transformer are an important part of an electrical power distribution network. They are classified based on … Continue Reading about Power Transformer and Distribution Transformer
Load Curve in a Power Plant – Daily, Monthly and Annual
A load curve is a plot of the load demand (on the y-axis) versus the time (on the x-axis) in the chronological order. It is a curve showing the … Continue Reading about Load Curve in a Power Plant – Daily, Monthly and Annual
Primary and Back-up Protection in Power System
Primary and Back-up Protection Primary protection (Main protection) is the essential protection provided for protecting an equivalent/machine or … Continue Reading about Primary and Back-up Protection in Power System
Methods of Arc Extinction in Circuit Breaker
The operating principle and arc forming phenomenon were explained in the previous article. Now it is very important to extinct the arc to avoid the … Continue Reading about Methods of Arc Extinction in Circuit Breaker
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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. The results of this test should compare directly to the manufacturer's datasheet. Related: Percentage Impedance of Transformer Application of Transformer … Continue Reading about How to Test Percentage Impedance of Transformer?
Latest Articles
Aeolian Vibration of Transmission Conductors
What is Aeolian Vibration? Aeolian vibration is a type of motion caused by wind on conductors and overhead shield wires of transmission and … Continue Reading about Aeolian Vibration of Transmission Conductors
Electrical Substation: Equipment, Types, Components & Functions
An electrical substation is an installation with electrical equipment capable of interrupting or establishing electrical circuits and changing the … Continue Reading about Electrical Substation: Equipment, Types, Components & Functions
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 … Continue Reading about Transformer Bushing Types : RIP Bushing vs OIP Bushing
GFCI (Ground Fault Circuit Interrupter) – Working, Types, Installing and Troubleshooting
A ground fault circuit interrupter (GFCI or GFI) is an inexpensive electrical switchgear device that can either be installed in your electrical system … Continue Reading about GFCI (Ground Fault Circuit Interrupter) – Working, Types, Installing and Troubleshooting
Auto Reclosing of Power Lines and Types of Faults
The goal of the auto reclosing in power lines is to restore the line to service as quickly as possible after a temporary fault in the transmission … Continue Reading about Auto Reclosing of Power Lines and Types of Faults
Square D QO Circuit Breakers
QO stands for Qwik-Open. Square D QO Circuit Breakers are fastest tripping circuit breakers at 1/60th of a second. QO™ Circuit Breakers provide the … Continue Reading about Square D QO Circuit Breakers
Bundled Conductors in Transmission Lines
The combination of more than one conductor per phase in parallel suitably spaced from each other used in an overhead transmission line is defined as a … Continue Reading about Bundled Conductors in Transmission Lines
Measurement of Three Phase Power | Wattmeter Methods
This article explains the measurement of three-phase power in star connected or delta connecter load using the wattmeter methods. The power in … Continue Reading about Measurement of Three Phase Power | Wattmeter Methods
