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Category 'Premium Content' - Technical Articles

Technical articles in the “Premium Contents” category are fully accessible to Premium Members only. Electrical engineering guides, specialist technical articles, and papers authored by experienced electrical engineers are all available to premium users. As an electrical engineer working in the Low-, Medium-, or High-Voltage fields, it will help you develop the professional technical skills you’ll need on the job.

Energy and Power

Three-phase basics and terms that students often mix

We all know that an electric current needs a circuit (a complete circle) before it can flow. A single-phase wye circuit can be a phase and a neutral with the current flowing through the “hot” wire and returning to the…...

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Feb 27, 2023 | By

Three-phase basics and terms that students often mix
Power Substation

The art of fire protection and measures in Air-Insulated Substations (AIS)

These days, the dependability of the infrastructure used to distribute energy to customers is a key metric for evaluating electrical utility companies. A single unscheduled interruption may be disastrous for a utility company’s finances and reputation. Most customers lack the…...

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Feb 20, 2023 | By

The art of fire protection and measures in Air-Insulated Substations (AIS)
Electric Motor

The art of achieving synchronous motor transient stability (especially in weak grids)

Since the subject of this article is somewhat not-that-easy to understand, I suggest starting with the basics of the synchronous motor. In the synchronous motor, the basic magnetic field is obtained by direct current excitation rather than through the air…...

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Feb 06, 2023 | By

The art of achieving synchronous motor transient stability
Power Substation

Switchgear interlocking system and arc protection that you MUST consider in the design

There are at least two safety requirements that medium-voltage switchgear MUST fulfil: an interlocking system and an arc protection system. Yes, these two systems are crucial in terms of safety because they protect not only the operator and other substation…...

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Jan 30, 2023 | By

Switchgear interlocking system and arc protection that you MUST consider in the design
Power Substation

A case study of a new 220 kV Gas-Insulated Switchyard (GIS) design for a generation plant

This technical article describes detailed planning and design phases of a new 220 kV Gas-Insulated Switchyard (GIS) in a 450 megawatt (MW) coal-fired combined heat and power plant (CHP) that was being considered for Ulaanbataar, Mongolia. The project is assumed…...

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Jan 23, 2023 | By

A case study of a new 220 kV Gas-Insulated Switchyard (GIS) design for a generation plant
Energy and Power

The life of a power substation project: Design, construction, erection and commissioning

This technical article covers numerous substation project design elements, lists the steps of the construction process, and examines the environmental impacts and impact mitigation strategies for power transmission and distribution substation projects. Most projects suffer due to lack of capability…...

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Jan 16, 2023 | By

The life of a power substation project: Design, construction, erection and commissioning
Maintenance

The art of predicting the fate of a power transformer by looking into a cup of oil

Insulation medium is an indispensable part of a power transformer, and the interesting thing about it is that it can drop dead at any time. Most of the time, this doesn’t happen, but… This article presents the transformer oil features…...

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Jan 09, 2023 | By

The art of predicting the fate of a power transformer by looking into a cup of oil
Low Voltage

How to design the power supply for data centres and airports while megawatts of loads rise fast

The first choice for service and distribution voltage is almost always 480 volts. Why is that? Well, it’s because it’s traditional, it has a safe design and specifications are already written around 480 V. UPS and backup aggregate equipment are…...

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Dec 26, 2022 | By

How to design the power supply in data centers and airports while megawatts of loads rise fast
Low Voltage

Failure cases of LV/MV electrical equipment and what should have been done (to avoid them)

Generally, the useful life of power system components heavily depends upon the level of care given to them and their duty cycles. For example, a circuit breaker on mainly switching duty can last 40 to max. 50 years. The majority…...

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Dec 19, 2022 | By

Failure cases of LV/MV electrical equipment and what should have been done (to avoid them)
Low Voltage

Inside the Modern Digital Low Voltage Switchgear: Devices and Communications

Low voltage switchgear is one of the significant pieces of equipment utilized for power distribution in electrical systems of all types of process and chemical plants. There is a migration from conventional low-voltage switchgear to the current digital version due…...

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Dec 12, 2022 | By

Inside the Modern Digital Low Voltage Switchgear: Devices and Communications
Cables

Voltage Drop Analysis and Calculation Essentials (MS Excel Sheet Bonus)

A voltage drop is the total amount of voltage loss that happens through all or part of an electric circuit due to impedance and other factors. The more the voltage drops in the system, the more negative impacts will likely…...

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Nov 28, 2022 | By

Voltage Drop Analysis and Calculation Essentials (MS Excel Sheet Bonus)
Premium Content

Often incorrectly specified and ordered: Power transformer fittings and accessories

Modern transformers are like cars full of sensors and electronics that scream and flash when something goes wrong. Most of the time, that’s very good and useful, but it could be irritating in case of repetitive false alarms that need…...

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Nov 14, 2022 | By

Often incorrectly specified and ordered: Power transformer fittings and accessories
Energy and Power

Learn how to interpret and design single-line diagrams (SLD) for complex projects

A complex project comprises loads ranging from small loads such as sockets and lights to higher loads like Air Handling Units (AHUs), Fan Coil Units (FCUs), motor pumps, and other high motor-driven loads. Loads connected to the project are gathered…...

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Oct 31, 2022 | By

Learn how to interpret and design single-line diagrams (SLD) for complex projects
Maintenance

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

The most common Gas-Insulated Switchgear (GIS) faults and how to perform investigation
Power Substation

How to prepare an enquiry for a power transformer: Design and tendering tips

Nothing is more crucial during the early phase of a transformer inquiry than a complete and explicit listing of all requirements that must be met from both the manufacturer’s and the user’s perspectives. The IEC standards include detailed requirements that…...

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Oct 10, 2022 | By

How to prepare an enquiry for a power transformer: Design and tendering tips


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