Distribution Transformers are an important component of the power distribution network. They play a major role in providing an uninterrupted power supply to consumers. They are one of the most reliable components of the power grid, yet there can be situations where they fail. Electrical damages are one of the …
The latest 2023 edition of NFPA 780 covers traditional lightning protection techniques for a wide range of structures such as ordinary buildings, structures of wind turbines, watercraft, and those with flammable and explosive materials. The purpose of the standard is to safeguard persons and property from hazards arising from exposure …
What is IP rating? IP rating or IEC 60529 grades the resistance of an enclosure against dust, water or other contaminants. It provides a list of the degree of protection offered by mechanical and electrical casings or enclosures. Electric equipment malfunctions or gets damaged when water or dust enters it. …
The earth resistance value is a major concern when dealing with earthing of any structure. Earth resistance measurements and the use of earthing compounds helps to identify and achieve a recommended earth resistance for a structure. We know that soil resistivity is the prime factor contributing to the earth resistance …
The process of electroplating is to coat a thin layer of metal on another metal to improve its physical and chemical properties. This is usually done by applying a direct electric current which helps to create a strong chemical bond between the two metals. Electroplating is generally done for two …
We often hear about electrical accidents in commercial buildings, industries, and other facilities that cause huge losses like equipment, infrastructure and even human lives. These accidents often result from faulty or unsafe electrical practices or unnoticed worn-out electrical systems. The severity of the accident is increased with the absence …
The resistance offered by the earth electrode to the current flow into the ground is known as earth resistance. The ideal earth resistance is considered to be zero, such that there is a quick flow of fault current into the ground, but this is practically impossible. The earth resistance value …
Electric power is distributed and used at the utility levels with the help of transmission systems, cables or other smaller conductors. Various type of electric cables is designed for specific requirements. The main aim of every type of electric cable is to conduct electricity or signals to the desired location. …
What is a Single Line Diagram? A single line diagram also called the one-line diagram is a symbolic or graphical representation of a three-phase power system. It has a diagrammatic representation of all the equipment and connections. The electrical elements such as circuit breakers, transformers, bus bars, and conductors, are …
Surge arresters are protective devices for safeguarding a piece of equipment from over-voltage transients by discharging or bypassing the surge current. It provides a low resistance path to the surge current protecting the system. The surge current can occur usually due to various reasons, like lightning or internal switching events. In …
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