Category Archives: Power Distribution System

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Balun Transformer – Balanced vs Unbalanced Transmission Lines

What is a balun? A Balun is special type of transformer that performs two functions i.e. impedance transformation and balanced to unbalanced transformation. The term balun is a contraction of “balanced to unbalanced transformer” Why do we need a balun? Baluns are important because many types of antennas (dipoles, yagis, loops) are balanced loads, which… Read More: Balun Transformer – Balanced vs Unbalanced Transmission Lines »

What is Corona Effect in Electrical Transmission Lines

what is corona effect in transmission lines

The phenomenon of ionization of surrounding air around the conductor, hissing noise and production of Ozone gas in an overhead transmission line is known as Corona Effect. Corona discharge is a process by which a current flows in a conductor with a high potential into a neutral fluid, usually air, by ionizing that fluid so… Read More: What is Corona Effect in Electrical Transmission Lines »

Wiring Installation for lighting & Power Points

Electrical wiring generally refers to insulated conductor used to carry current including the associated devices. Domestic electric appliances like lights, fans, washing machines, water pumps etc are connected to the supply through insulated wires which are controlled by switches. The wiring diagram gives the connections of different appliances to the supply within a house or… Read More: Wiring Installation for lighting & Power Points »

Classification of Transmission Lines

Overhead transmission lines are classified based on the manner in which the capacitance is considered. Common classification is long, short and medium transmission lines. Short Transmission Lines Transmission lines whose length less than 80kms and operating voltage less than 20kV comes under short transmission line. Due to the smaller distance and lower voltage levels capacitance… Read More: Classification of Transmission Lines »

Advantages of Bundled Conductors in Transmission Lines

Bundled Conductors For transmission of more power for long distances to load centers Extra High Voltage (EHV) transmission is employed. Implementing Extra High Voltage has advantage of reduction in the copper losses and improves efficiency. However transmission of voltage beyond 300kV will poses some problems such as Corona effect which causes significant power loss and… Read More: Advantages of Bundled Conductors in Transmission Lines »

Cable Tray Raceway Fill and Load Calculations

Cable tray / raceway is integral part of any cable management system. Selection of cable tray is very critical because if cable tray size is not sufficient the cables may become damaged due to improper handling and excessive heating etc. On the other hand cable tray supporting system can not be neglected as well since… Read More: Cable Tray Raceway Fill and Load Calculations »