Overhead Lines
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Difference between Lightning Arrester and Surge Arrester
Difference between Surge Arrester, Surge Suppressor, Lightning Arrester and Lightning Rod Different terms used for arresters are sometimes confusing even professional engineers and electricians use them interchangeably. We will discuss…
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Why Volume of the Conductor is Inversely Proportional to the Square of Voltage?
Prove that the Volume of a conductor is inversely proportional to the squire of Voltage (Vol = 1/V2). And what is the effect of this relation on Transmission and Distribution…
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Why Don’t Birds and Squirrels Get Electrocuted on Power Lines?
Why Don’t Birds Setting on Power Lines Get Electrocuted? We mentioned many times that electricity is our best friend as well as a worst enemy. If you give it a…
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Why is Electric Power Transmission Multiple of 11 i.e 11kV, 22kV, 66kV etc?
Why are all the Transmission Line Voltages Multiple of 11kv? Not 10kV? Obliviously, this is an interview type question for electrical engineers especially related to power engineering. Now, we are…
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What are the Colored Aerial Marker Balls on Power Lines For?
What are Marker Balls and Why They are used for on Power Lines? Almost all of us have seen those colored (mostly orange, yellow, red or white) balls on transmission…
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Failures In Electrical Systems, Equipments & Materials
Failures In Electrical Systems, Causes & Prevention Introduction Electrical systems, equipments and materials are subjected to failures that can cause the total destruction of equipments and severe power outages. For…
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What is Shunt Reactor – Types, Construction & Applications
Why to use Shunt Reactors? Different between Power Transformer & Shunt Reactor What is Shunt Reactor? Shunt reactor is same as power transformer but it has only one winding per…
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Power System Restoration – Outage, Voltage Collapse & Switching Programs
Power System Restoration – Power Outage & Restoring the Power Introduction Modern power grids are extremely complex and widespread. Surges in power overhead lines and other faults can cause massive…
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Working on De-Energized Electric Circuits, Networks & Equipments
De-Energized Work procedure & Safety in Electrical Engineering Introduction Electricity presents to the workers and installations different hazards and for this reason local operations and maintenance of electrical equipment should…
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Electrical Shock Hazards & Its Effects on Human Body
Electrical Shock Hazards & Effects What is Electrical Hazard? Electrical hazard or Electric Shock may be defined as “Dangerous event or condition due to direct or indirect electrical contact with…
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