Eight fuse characteristics you must consider when designing protection circuits
Fuses were the first type of protection to be used, and they still have a place in numerous applications. Although they do not have the flexibility of adjustment and resetting… Read more
Sep 16, 2020 | Edvard
The essentials of electrical systems in cement plants
Many young engineers consider cement plants pretty complicated because of their weird technology. The reason probably lies in the fact that you cannot understand all those technologies unless you worked… Read more
Sep 14, 2020 | Edvard
Earth fault protection in a solidly (effectively) earthed high voltage power systems
The fault statistic shows that earth faults are the dominating fault type and therefore the earth fault protection is of main importance in a network. The type of earth fault… Read more
Aug 24, 2020 | Edvard
My experience in solving problems in the cracker plant using a high-speed bus transfer solution
Incoming power supply details: Two of 6.6kV voltage lines are connected to the cracker plant from the distribution substation through reactors. Captive power plant (electricity generation facility) consists of two…...
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This page requires a Premium Membership. Get access to premium HV/MV/LV technical articles, electrical engineering guides, and papers. Check out the benefits of each plan and choose the one that works best for you or your organization. You can purchase a plan for 1 or 3 months and a year.Log InRegisterAug 17, 2020 | Satish Nurukurthi
Six differential stator-phase-fault protection (87) for all size generators (you MUST know)
Generally, phase faults at generators rarely occur, but when they do, large fault currents can flow and make the mess. The best protection is differential (ANSI 87), and this type… Read more
Aug 12, 2020 | Edvard
Protection of three-phase motors from unbalance (loss of phase and phase rotation)
The most common cause of unbalance for three-phase motors is the loss of phase resulting from an open fuse, circuit breaker, connector, or damaged conductor. Unbalances in other connected loads… Read more
Aug 10, 2020 | Edvard
How system earthing keeps you and the network safe
The term “earthing” consists of several functions which only have “utilizing the earth” in common. Before describing the system earthing, it can be of interest to know a bit about… Read more
Jul 22, 2020 | Edvard
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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This page requires a Premium Membership. Get access to premium HV/MV/LV technical articles, electrical engineering guides, and papers. Check out the benefits of each plan and choose the one that works best for you or your organization. You can purchase a plan for 1 or 3 months and a year.Log InRegisterJun 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
