Notes in preparation of an MV/LV substation civil drawings and construction layout
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 information and layout drawings are required for civil engineers to…...
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Dec 05, 2019 | By Edvard Csanyi
Learn how to use PLC and VFD for pump control: Power and control circuits analysis
For the last several decades, every engineering task related to processing control is realized by the use of PLC (Programmable Logic Controller). If we are talking about induction motor control, which is the most common case, usually a VFD (Variable…...
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Nov 27, 2019 | By Miodrag Kokotovic
Five substation building services that usually lack of proper design (and make troubles later)
This technical article introduces five main principles involved with substation control building and switchyard services that make a lot of trouble to substation crew if poorly designed. The article covers basic internal and external lighting design, heating, ventilation and air-conditioning…...
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Nov 20, 2019 | By Edvard Csanyi
The wiring diagram and physical layout of the equipment inside the motor control centre
This article will provide a description of the most important equipment and working principle of a real case motor control centre (MCC). That is a usual name for a switchboard with the purpose of power supply and control of induction…...
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Nov 14, 2019 | By Miodrag Kokotovic
12 on-site checks to inspect the transformer’s health
On-site inspection of the substation transformer usually exposes important condition changes and it initiates various suspicions that need to be investigated in detail. As with any other substation equipment, many things could go wrong during the transformer operation. For example,…...
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Nov 11, 2019 | By Edvard Csanyi
13 very important type tests of a low voltage switchgear carried out by the manufacturer
Certification of distribution assemblies is defined by international standard IEC 61439-1. This standard provides common rules that are recognized worldwide. Compliance with the standard is certified, depending on the country or market, by a declaration of the panel builder, the…...
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Nov 06, 2019 | By Edvard Csanyi
The essentials of an automatic changeover systems in medium voltage networks
In medium voltage distribution networks, it is important to maintain a high level of reliability. Industry relies on the continuous operation of critical plant, which requires no or little disruption to the electrical supply. There are various methods for building…...
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Nov 04, 2019 | By Edvard Csanyi
Lessons I learned during the start-up of an MV switchgear
In the world of electrical engineering, a term start-up assumes all works which are necessary to be done for putting in operation already tested switchgear, as close as possible installed in position and ambient defined by design documentation and employer’s…...
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Oct 31, 2019 | By Miodrag Kokotovic
Power supply conceptual schemes for small, medium-sized and large industrial plants
This technical article presents preferred system structures and power supply concepts for small, medium-sized and large industrial plants that meet the different requirements for power demand and supply quality. For each plant size, Siemens’s LV/MV distribution switchgear and distribution transformer…...
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Oct 22, 2019 | By Edvard Csanyi
Top ten software for electrical design, analysis and simulation of T&D networks
The importance of stability and maintaining the power quality of the electricity transmission and distribution (T&D) networks necessitates a thorough examination of all aspects of the design, analysis, and simulation of the transmission and distribution networks by all persons associated…...
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Oct 10, 2019 | By Ali Bahonar
Automatic transfer switch between three power sources (analysis of schemes)
When a switchboard can be supplied from two or more different sources, transfer between those sources can be done manually or automatically. This kind of configuration is usually designed when reliability and quality of power supply need to be provided…....
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Oct 03, 2019 | By Miodrag Kokotovic
Good practice rules for electromagnetic compatibility (EMC) of LV conductors
The search for an overall optimization of the installation with regard to electromagnetic compatibility (EMC) and its ability to function without suffering or emitting excessive interference, comes via a set of good practices, which are often simple and based on…...
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Sep 30, 2019 | By Edvard Csanyi
Things you MUST know when commissioning low voltage switchgear and circuit breakers
Purchasing low voltage switchgear is not that easy, it’s not like purchasing a new TV or laptop. You have to be very experienced and deadly serious when specifying and ordering LV switchgear, but also during the commissioning and testing. This…...
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Sep 23, 2019 | By Edvard Csanyi
Why we find temperature so important everywhere in electrical engineering?
The purpose of this article is to underline and illustrate the importance of temperature for various aspects of electrical engineering. This is one of the crucial engineering issues from the very beginning in design and procurement stage, later during exploitation,…...
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Sep 20, 2019 | By Miodrag Kokotovic
Major components you can spot while looking at HV/EHV GIS (Gas-insulated switchgear)
Gas-insulated switchgear (GIS) is a piece of high voltage equipment that is being constantly developed day by day. The basics of GIS technology is more or less the same, but everything else under the hood is improved a lot comparing…...
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Sep 18, 2019 | By Edvard Csanyi

