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Here comes the New Year! As 2019 is coming to an end, it is time to take a glimpse at what was, but more importantly to look forward to what… Read more
Dec 31, 2019 | Edvard
If you take a look at the past, you must notice that power system was much cleaner and straightforward. Most loads were primarily linear in nature. Linear loads draw the… Read more
Dec 30, 2019 | Edvard
This article will analyse a real example of electrical switchboard for potable water well pump, containing soft starter as one of major components. Besides explanation of wiring diagram and working…...
Dec 27, 2019 | Miodrag Kokotovic
We all should know that low voltage circuit breakers and fuses operate in the event of excess current arising from overload conditions and faults. As the statistics say, the most… Read more
Dec 25, 2019 | Edvard
This technical article will try to shed some light on switching devices usually installed in low voltage switchgear – circuit breakers, contactors, disconnectors, load-break switches, switch disconnectors and fuses. There… Read more
Dec 23, 2019 | Edvard
The metal-processing industry is an excellent example where you can find specific large industrial plants. Why specific? Maybe because in such plants, there are only a few individual large loads…...
Dec 18, 2019 | Edvard
In principle, the protection of medium voltage motors is similar to low voltage motors, but the requirements are more demanding. Being closer to the utility source, medium-voltage motors are more… Read more
Dec 16, 2019 | Edvard
Various aspects of reactive power compensation problems have already been mentioned in previous articles. However, because of consistency of this article, we will remind ourselves briefly on basic terms and…...
Dec 12, 2019 | Miodrag Kokotovic
This technical article will try to shed some light on why and how electrical equipment fails and what’s happening before and during the failure of particular substation equipment like switchgear,… Read more
Dec 09, 2019 | Edvard
MV/LV substations are not only a point of supply but also provide a means of network isolation in the event of faults or emergencies. In that manner, a detailed substation…...
Dec 05, 2019 | Edvard
It is a common practice to use the differential relay as primary fault protection for the generator. Backup fault protection is also highly recommended to protect the generator from the… Read more
Dec 04, 2019 | Edvard
As you should already know, current transformers are used for metering and relay protection purposes. When we are talking about current transformers used for metering, their performance is of interest… Read more
Dec 02, 2019 | Edvard