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Bundled conductors are commonly used to increase electrical capacity and reduce corona and radio noise at voltages above 200 kV. Though the extent of corona and radio noise is impacted by elevation (air density), and other factors such as … Continue Reading about Bundled Conductors in Transmission Lines
This article explains the measurement of three-phase power in star connected or delta connecter load using the wattmeter methods. The power in a three phase load can be measured by following methods: Three wattmeter method Two wattmeter method One wattmeter method The name … Continue Reading about Measurement of Three Phase Power | Wattmeter Methods
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 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
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?
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
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
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
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
What is Voltage Surge or Transient Voltage? The sudden rise in voltage for a very short duration on power system is known as voltage surge or … Continue Reading about Voltage Surge in Power System