Design Knowhow: Low voltage substation layouts, earthing, fire protection and tests
The design of a low-voltage substation is a pretty complex and quite exciting job to do. If the designer would have complete freedom to make decisions regarding the substation layout, equipment, or cable routes, the job will be even more…...
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Apr 03, 2023 | By Mohammed Ayman
The most common Gas-Insulated Switchgear (GIS) faults and a case of 220kV CB cubicle
Over decades since its inception, GIS switchgear demand is still prevalent in these present times due to its compact built, reliability, and maintenance advantages compared to conventional Air-insulated switchgear. Even the strong negative effect on the environment when its gas…...
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Oct 17, 2022 | By Lark C. Cosedo
The most often low-voltage switchboard supply schematics implemented on-site
This technical article is dedicated to several different low voltage switchboard supply schematics often installed on-site. First, we shall look at the several standard LV switchboard supply schematics (network supply only), then supply schematics for switchboards backed up by generators,… Read more
Jul 04, 2022 | By Edvard Csanyi
The most common type tests required for medium and high voltage switchgear
Let me put the definition of switchgear type tests this way. A switchgear MUST withstand voltage in normal and abnormal conditions and to carry varying load currents during its lifetime. A switchgear MUST be able to clear faults occurring due…...
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May 02, 2022 | By Edvard Csanyi
Medium voltage switchgear: Important design considerations and applications
This technical article explains various aspects of the application of medium voltage switchgear and highlights the considerations for the selection of suitable circuit breakers for different applications. Medium voltage switchgear, commonly known as MV switchgear, play a significant role in…...
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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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Mar 14, 2022 | By Edvard Csanyi
Learn what is inside a modern ATS panel and how to analyze the circuit diagrams
One of the ways to mitigate a successive transfer of power in case of loss of supply, power outage, or scheduled maintenance is the use of a transfer switch. The transfer switch is an electrical device that transfers power from…...
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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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Mar 07, 2022 | By Chidubem Asogwa
Emergency breaking, stop and isolation intended to eliminate danger as quickly as possible
As their name indicates, emergency operations are intended to eliminate, as quickly as possible, a danger that occurs unexpectedly. The emergency break is designed to cut off the electrical power, whereas the emergency stop takes account of the danger of… Read more
Feb 14, 2022 | By Edvard Csanyi
Design issues in HV busbar protection systems (substation topology and DC power supply)
This technical article discusses criteria and requirements for designing protection systems for busbars in HV/EHV networks. One of the most critical requirements is reliable busbar relay protection to assure power system integrity during fault conditions. This requirement is further emphasized because… Read more
Sep 27, 2021 | By Edvard Csanyi
Special measures needed for switching MV capacitor banks and filter circuits
Switching of medium voltage capacitor banks and filter circuits poses special demands on the circuit-breaker. Potentially critical impacts are the inrush current and the stress of the recovery voltage. This technical article deals with the requirements of capacitor banks without… Read more
Aug 02, 2021 | By Edvard Csanyi
MV/HV switchgear (circuit breaker) switching capability and suitability for specific applications
Circuit breakers (CBs) do interrupt fault currents and close onto faults. Besides, they could be used as isolation devices like disconnectors. The CBs manufacturers’ brochures and standards provide extensive data to select and assess the CBs performance, but designers must…...
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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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Jul 26, 2021 | By Salem Alshahrani
The essentials of overcurrent protection you are not allowed to forget (types and principles)
Relay protection is nowadays completely digitalized and very sophisticated; there is no doubt about that. But, do electrical engineers really understand what they do when setting parameters and navigate through endless menus on a relay? Most engineers do know, of… Read more
May 24, 2021 | By Edvard Csanyi
Fundamental electrical schemes of connections for supply at generator voltage and higher
This technical article will shed some light on fundamental schemes and arrangements of connections for supply at generator voltage, higher than generated voltage, and a few basic transmission schemes. It is important to note that the choice of the electrical…...
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Mar 08, 2021 | By Edvard Csanyi
Mastering GIS control circuits: AC/DC auxiliary circuits and circuit breaker closing circuit
A gas-insulated substation (GIS) is usually utilized in high voltage applications in which all conductive parts are encapsulated in sealed cylinders with SF6 as the insulating medium. The air-insulated substation (AIS), on the other hand, has air as an insulating…...
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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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Jan 11, 2021 | By Salem Alshahrani
Four ways of ensuring proper selectivity in MV/HV electrical network protection
Selectivity study of a power system is usually considered as an advanced job for advanced engineers, mostly relay protection engineers. This article will try to get close to a few important selectivity principles in a simple manner. It’s important to… Read more
Jan 04, 2021 | By Edvard Csanyi
Mastering switchgear control circuits – AC/DC circuits and circuit breaker closing circuit
Control circuits are vital to the operation of medium voltage switchgear. The integrity of these control circuits is essential to the switchgear’s proper operation, so commissioning and maintenance activities records are extremely important for troubleshooting practices. Furthermore, one has to…...
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Nov 30, 2020 | By Salem Alshahrani
