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 … Continue Reading about Auto Reclosing of Power Lines
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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 high level of protection you expect from Square D. When it comes to electrical protection, fast response is critical and QO™ Circuit Breakers can … Continue Reading about Square D QO Circuit Breakers
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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
Types of Underground Cables
In practice, different types of underground cables are generally required to deliver 3-phase power. For the purpose, either three-core cable or three … Continue Reading about Types of Underground Cables
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
Current Transformer (CT) – Construction and Working Principle
The large alternating currents which can not be sensed or passed through normal ammeter, and current coils of wattmeters, energy meters can easily be … Continue Reading about Current Transformer (CT) – Construction and Working Principle
