When a transformer is initially energized, there is a phenomenon known as exciting current inrush. Although inrush currents are not generally as damaging as fault currents, the duration of exciting… Read more
Sep 07, 2016 | Energy and Power
In this technical article, protective relays are categorized depending on the component which are protect: Generators Transmission lines Transformers, and Loads There are different protection schemes used for protecting generators… Read more
Sep 05, 2016 | Protection
It’s not easy to be a good electrician, that’s for sure. Things you studied hard (or still studying) are gradually being forgotten, especially electrical formulas. Well, these 20 questions tend… Read more
Sep 02, 2016 | Electrical Lectures
In order to measure electrical quantities, the measuring instruments must be connected to the lines safely, with maximum simplicity and convenience. Generally, the fundamental parameters to be detected are voltage… Read more
Aug 31, 2016 | Energy and Power
Direct current presents different problems than alternating current with aregard to the phenomena associated to the breaking of a short circuit current and interruption of other types of high value… Read more
Aug 29, 2016 | Energy and Power
We have all seen the motor nameplate attached on the motor side (or on top). All motors have a permanent nameplate which lists all important data, further data is usually available… Read more
Aug 26, 2016 | Electric Motor
For the dimensioning of the capacitor bank to be installed in order to improve the power factor of a plant, it is necessary to calculate correctly the power factor according… Read more
Aug 24, 2016 | Energy and Power
How to make the right choice between fixed or withdrawable medium voltage switchgear when selecting a new equipment for power substation? The following evaluation procedure should be conducted: Find out… Read more
Aug 22, 2016 | Maintenance
This technical article describes shielding, grounding, and splicing techniques for use with motor wiring. This article covers the following topics: Understanding noise in motor power wiring Shielding motor power cables… Read more
Aug 19, 2016 | Electric Motor
As line distribution boards, busbar trunking system (BTS) also belongs to the group of switchgear assemblies documented in IEC 61439 (VDE 0660-600). Apart from the general requirements of IEC 61439-1… Read more
Aug 17, 2016 | Low Voltage
