Overhead Lines
-
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…
Read More » -
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…
Read More » -
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…
Read More » -
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…
Read More » -
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…
Read More » -
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…
Read More » -
Protective Actions to Avoid & to Reduce Electric Hazardous
Protective Actions to Reduce & Avoid Electric Hazardous General Rules As general safety rules for EHV, HV and MV installations (EHV: Extra High Voltage – V ≥ 150 kV. HV:…
Read More » -
Treeing in XLPE Insulated Medium & High Voltage Cables
Electrical Treeing in XLPE Insulated MV & HV Cables (Manuel Bolotinha) Nowadays XLPE (Cross-linkedpolyethylene) is the most used insulation material of medium and high voltage cables, which presents important advantages over…
Read More » -
MV & HV Cable Termination to Equipment & Joints
Medium & High Voltage (MV & HV) Cable Termination & Joints General Problems & Factors for Termination Terminations to indoor switchgears, electric motors, power transformers, instrument transformers and other electrical…
Read More » -
Types & Characteristics of Surge Arresters
Surge Arresters – Types & Characteristics Introduction Atmospheric lightning phenomenon on overhead lines and bare conductors or metallic structures of an outdoors substation and over voltages due to switching operations…
Read More »