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Lightning protection system – How much of design and material is really needed?
Within this article, an overview of fundamental principles regarding design and construction of lightning protection system (LPS) will be given. Relevant IEC 62305 standard will be used as a reference. Since this is very complex and detailed document, only basic…...
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Jun 28, 2019 | By Miodrag Kokotovic
Protection
Differential protection of a transmission line with digital communication via pilot wires
Wire connections have a limited transmission bandwidth (3.4 kHz in the case of telephone twisted pairs). In the past they were used for differential protection with analog (50 Hz) measured value comparison and for phase comparison protection by implementation of… Read more
Jun 26, 2019 | By Edvard Csanyi
Energy and Power
MV/LV transformers – The most common power supply in low voltage networks
The general term power supply in LV networks refers to the supply of electrical energy. The power supply, and more generally the different supplies, are provided by sources (mains supply, batteries, generator sets, etc.) which can be MV/LV transformers, diesel… Read more
Jun 24, 2019 | By Edvard Csanyi
Protection
Fuses as the oldest and simplest method of protecting rural distribution systems
Fuses are the oldest and simplest methods of protecting rural networks. There is no method as simple as fuses, but don’t be tricked, modern fuses are very reliable devices. All they need is a good discrimination achieved to be almost… Read more
Jun 19, 2019 | By Edvard Csanyi
Protection
Using earth & phase directional protection where power flow direction might change
Directional protection relay is often used in all network parts in which the direction of flow of power might change, notably in the instance of a short circuit between phases or of an earthing fault (single phase fault). Directional protection… Read more
Jun 17, 2019 | By Edvard Csanyi
Low Voltage
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The most important precautions during commissioning and start up of LV switchgear
Low voltage switchgear can often be a very complex and expensive piece of electrical equipment, usually representing one of the most critical and crucial parts of the project. In order to ensure that such important equipment is designed and will…...
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Jun 13, 2019 | By Miodrag Kokotovic
Energy Generation
Typical electrical distribution scheme and SCADA system of an oil/gas production plant
Power can be provided from mains power or from local gas turbines or diesel generator sets. Large facilities have high power demands, from 30 MW and upwards to several hundred MW. There is a tendency to generate electric power centrally… Read more
Jun 12, 2019 | By Edvard Csanyi
Low Voltage
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Major components you can spot while looking at opened LV and MV switchboards
Depending on the size of the building or factory site and whether the supply is high voltage or low voltage, there may be requirements for both a main high voltage switchboard and one or more low voltage switchboards or just…...
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This content is not available in your premium membership plan. Please upgrade your plan in order to access this content. You can choose an annually based Basic, Pro, or Enterprise membership plan. Subscribe and enjoy studying specialized technical articles, online video courses, electrical engineering guides, and papers.With EEP's premium membership, you get additional essence that enhances your knowledge and experience in low- medium- and high-voltage engineering fields.
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Jun 10, 2019 | By Edvard Csanyi
Energy and Power
Fire behaviour and construction safety precautions for installation of cables and conductors
Although the type of cable and conductor is the determining factor in the fire behaviour of ducts and conduits, the choice of cable tray type and the installation of the latter in line with installation precautions are just as crucial…. Read more
Jun 05, 2019 | By Edvard Csanyi
Protection
What is the unit protection and why it’s widely used in transmission networks
The whole power system must be protected. This is achieved by dividing it into overlapping zones. If a fault occurs in a particular zone, only the protection system covering that zone should operate. Those systems relating to other zones should… Read more
Jun 03, 2019 | By Edvard Csanyi
