Amplidyne is a special-purpose DC generator. It supply large DC currents, precisely controlled, to the large DC motors used to drive heavy physical loads, such as gun turrets and missile launchers. The amplidyne is really a motor and a generator. … Continue Reading about Amplidyne – Working and Application
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Electrical Machines
Speed Control of DC Shunt Motors
The different methods of speed control in DC shunt motors are explained below, Flux Control Method Armature Control Method Voltage … Continue Reading about Speed Control of DC Shunt Motors
Stroboscopic Effect in Fluorescent Lamps
Fluorescent materials when subjected to electromagnetic radiations of particular wavelength, get excited and in turn, gives out radiations at some … Continue Reading about Stroboscopic Effect in Fluorescent Lamps
Three Phase Induction Motors – Construction
A three phase induction motor has two main parts stator rotor. The rotor is separated from the stator by a small air-gap which ranges … Continue Reading about Three Phase Induction Motors – Construction
Three Phase Transformer Interconnections
The phase windings of three phase transformers are interconnected to give a three-phase, three-or four-wire supply through … Continue Reading about Three Phase Transformer Interconnections
Power System
Breaker Failure Relay (Back-up Protection Relay)
Each year as line and system loading increase and more operating companies superimpose higher voltage transmission systems on … Continue Reading about Breaker Failure Relay (Back-up Protection Relay)
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 about Properties of Good Transformer Oil
What are Motor Control Centres?
The Motor Control Centre is used in general to describe combinations of enclosures, busbars, circuit breakers, power contactors, power fuses, … Continue Reading about What are Motor Control Centres?
Short Circuit – Causes and Effects
What is Short Circuit? Whenever a fault occurs on a network such that a large current flows in one or more phases, a short circuit is said to have … Continue Reading about Short Circuit – Causes and Effects
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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
