Some of the factors that effect the selection of nominal voltage levels for the service systems are: Type and size…
Sources of Harmonics: Several sources of harmonic currents that may be found on electrical power distribution networks are listed below:…
All torques of an induction motor, at a given slip, vary approximately as the square of the voltage applied to…
Grounding systems in the generating stations should able to meet the following grounding principles: Grounding Principles: Metallic enclosure on electrical…
Ferroresonance: Ferroresonance phenomenon can be triggered off through interaction of the system capacitance with a non-linear inductance, when transformer is…
Step Potential Step potential is the step voltage between the feet of a person standing near an energized grounded object.…
Step Potential and Touch Potentials are very important in substations because during ground faults all the ground current returns to…
Majority of electrical substations will be air insulated type. All the electrical equipment live parts will be exposed .All the…
In air blast circuit breakers, compressed air at a pressure of 20-30 kg/cm2 is employed as an arc quenching medium. Air…
Shunt Vs Series Capacitors Advantages Capacitors aid in minimizing losses and helps in reducing operating expenses. Capacitors should be placed…
