Electrical insulation testing – Often underestimated until things go really bad

Due to mechanical damage, vibrations, (excessive) heat/cold, moisture/humidity, chemical influences and interactions and aging pinholes, cracks causes moisture and foreign matter to penetrate the surface of the insulation. They create… Read more

Jun 17, 2020 | Edvard

A real-life case study of relay coordination (step by step tutorial with analysis)

I would say that coordination is a TEAMWORK. In the protection context, it implies how the various protection devices in an electrical distribution network, work as a team, to achieve…...

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Jun 15, 2020 | Sivakumar K

Planning and installation of the low voltage switchgear – The devil is in the detail!

To be honest with you, the planning and installation of LV switchgear is a damn complicated job. But you knew that :) There are dozen of detail where you can… Read more

May 24, 2020 | Edvard

Four very important precautions for installation of cables and busbar trunking systems

First, to be clear, there are dozen of concerns and precautions you should be aware of when we talk about energy transport. Cables and busbar systems are the most common… Read more

May 11, 2020 | Edvard

Twelve doubts in ground testing that make electrical engineers pretty confused

Ground testing is often misunderstood by electrical engineers and technicians who do not perform such testing often and regularly. It seems that there are a lot of questions and doubts… Read more

May 06, 2020 | Edvard

Why should plant engineers be worried about the power factor? What’s the catch?

Why are power engineers interested in plant power factor, what causes low power factor, and how can it be improved? The objectives of this article are to answer these questions… Read more

May 04, 2020 | Edvard

Five power quality devices that every commercial plant must have installed

Nowadays everybody speaks about power quality. For many reasons, I would say. Electrical energy is now polluted more than ever, and consumers are more sensitive to power disruptions and fluctuations… Read more

Apr 20, 2020 | Edvard

The essentials of power systems: Relay protection and communication systems

First, I would like to make a note that there are many essentials when we speak about power systems in general. The main relay protection functions (overcurrent, directional, differential, distance,… Read more

Apr 06, 2020 | Edvard

Civil engineering in installation of substation buildings and switchboard rooms

What is the civil engineering of substation? The civil engineering includes a large quantity of information and details for the structural drawings required to design switchgear installations. The structural drawings… Read more

Apr 01, 2020 | Edvard

Six less known phenomena that can cause disturbance in electrical installations

In addition to the known phenomena of lightning and switching, numerous new sources, in particular power converters, can cause disturbance in installations. This disturbance, which is generated by the installation… Read more

Mar 30, 2020 | Edvard

AC and DC facilities in electrical station services of major power plant types

In a power plant, the electrical station services (abbreviated to SS in the following) consists of all the DC facilities from 24 to 220 V and AC facilities up to…...

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Mar 23, 2020 | Edvard

The art of determining the right cross-section of low voltage conductors

To be clear at the beginning of this article, determining the cross-section of conductors and cables is, for sure, not the most exciting part of electrical design. There are much… Read more

Mar 16, 2020 | Edvard

Five actions to achieve excellent energy savings in old electrical installations

Not all existing electrical installations lack energy efficiency, but most of them do. Especially if they were built 15-20 years ago and older. Although it is generally acknowledged that substantial… Read more

Mar 04, 2020 | Edvard

When can we say that earthing arrangement is safe for people (confusions in practice)

This article will analyse some of the most important safety issues related to design and use of LV electrical installations. Besides explanation of relevant terms in this field defined by…...

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Feb 28, 2020 | Miodrag Kokotovic

Controlling power system parameters through reactive power (VAr) compensation

To be honest, transmission and distribution networks are full of problems. But that’s nothing new, and you already knew that. This technical article will shed some light on solving some… Read more

Feb 17, 2020 | Edvard