What is GFCI or GFI? A ground fault circuit interrupter, called a GFCI or GFI, is an inexpensive electrical switchgear device that can either be installed in your electrical system or built into a power cord to protect you from severe … Continue Reading about GFCI (Ground Fault Circuit Interrupter) – Working, Types, Installing and Troubleshooting
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Auto Reclosing of Power Lines and Types of Faults
The auto reclosing of power lines has become a generally accepted practice. Reports from different parts of the world show that in certain networks in regions subject to a high lightning intensity only about 5 percent of the faults are permanent. Auto-reclosing, therefore, provides significant … Continue Reading about Auto Reclosing of Power Lines and Types of Faults
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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
Bundled conductors are commonly used to increase electrical capacity and reduce corona and radio noise at voltages above 200 kV. Though the … 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
What is Circuit Breaker – Working Principle and Arcing Phenomenon
What is a Circuit Breaker? As the name indicates, circuit breaker means the device which breaks (Open) the circuit under the abnormal condition and … Continue Reading about What is Circuit Breaker – Working Principle and Arcing Phenomenon
What is an HVDC (High Voltage Direct Current) Transmission System?
HVDC stands for High Voltage Direct Current. An HVDC electric power transmission system uses direct current for the bulk transmission of electrical … Continue Reading about What is an HVDC (High Voltage Direct Current) Transmission System?
4 Major Types of Electrical Substations
The assembly of the apparatus used to change some characteristic (e.g. voltage, a.c. to d.c., frequency, p.f etc.) of electric supply is called a … Continue Reading about 4 Major Types of Electrical Substations
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 for … Continue Reading about Starting Methods for Synchronous Motor
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 starter? Let's check it. Consider a dc motor at … Continue Reading about Need of a Starter (3 & 4 Point) in DC Motors