Low Voltage
Few good tips for low voltage switchgear maintenance and care
The low voltage switchgear involves many devices like power circuit breakers, MCBs, aux. relays, CTs, VTs etc. and of course at the end – enclosures (indoor or outdoor type). The frequency of inspection and maintenance of low voltage switchgear should be… Read more
Jul 18, 2016 | By Edvard Csanyi
Energy and Power
Main short circuit faults occurring in networks and machines
Short-circuits can be defined according to three main characteristics: They may be mechanical: breakdown of conductors or accidental electrical connection between two conductors via a foreign body such as a tool or animal; They may be electrical: following the degradation of… Read more
May 30, 2014 | By Edvard Csanyi
Electrical Lectures
Dielectric Strength Of Insulator Materials
The atoms in insulating materials have very tightly-bound electrons, resisting free electron flow very well. However, insulators cannot resist indefinite amounts of voltage. With enough voltage applied, any insulating material will eventually succumb to the electrical ”pressure” and electron flow… Read more
Jun 14, 2012 | By Edvard Csanyi
Energy and Power
Insulating materials in electrical equipment
The reason for using insulating materials is to separate electrically the conducting parts of equipment from each other and from earthed components. Earthed components may include the mechanical casing or structure that is necessary to enable the equipment to be… Read more
Oct 05, 2011 | By Edvard Csanyi
High Voltage
SF6 gas as insulating and arc-quenching medium
Sulphur hexafluoride gas (SF6) is employed as insulation in all parts of the installation, and in the circuit-breaker also for arc-quenching. SF6 is an electronegative gas, its dielectric strength at atmospheric pressure is approximately three times that of air. It… Read more
Jan 06, 2011 | By Edvard Csanyi
Cables
Comparison Of Cable Insulating Materials
Electrical insulation materials are employed over the metallic conductors of underground cables at all voltage ratings. Polymeric materials are employed as the insulation, but the nature of the polymer may vary with the voltage class. Since paper insulation was used… Read more
Jan 03, 2011 | By Edvard Csanyi
