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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

Want to learn to analyze electrical schematics? Great! But first, you must understand these.

This technical article delves into a diverse array of switches and components that are fundamental to the operation and control of electrical systems. Starting with the basics like TURN, PULL, and PUSH switches, we navigate through the intricacies of latching…...

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Jan 15, 2024 | By

Want to learn to analyze electrical schematics? Great! But first, you must understand these.
High Voltage

A roadmap for engineers seeking mastery in the language of electrical schematics

In the intricate landscape of electrical engineering, the ability to decipher and interpret schematic drawings is a skill that separates the adept from the novice. This technical article delves into the art of understanding schematics, unraveling the complexities through a…...

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Jan 03, 2024 | By

A roadmap for engineers seeking mastery in the language of electrical schematics
High Voltage

Fundamental concepts of schematic drawings: Going deeper into analysis and design intricacies

Welcome to this comprehensive technical article that delves into the intricacies of electrical schematics, shedding light on crucial elements such as loops, wire connections, auxiliary contacts, MCBs, contactors, circuit breakers, isolators, earth switches, and terminal blocks. In the world of…...

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Dec 25, 2023 | By

Fundamental concepts of schematic drawings: Going deeper into analysis and design intricacies
High Voltage

Fundamental concepts of schematic drawings for true field engineers (hands on HV schemes)

Schematic drawings, also known as electrical or circuit diagrams, are essential tools for understanding and designing electrical circuits. Mastering schematic drawing is a fundamental skill for field engineers, allowing them to effectively troubleshoot, maintain, and modify electrical schemes. This technical…...

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Dec 11, 2023 | By

Fundamental concepts of schematic drawings for true field engineers (hands on HV schemes)
Power Substation

Contract drawings for a power transformer – The checklist you should always follow

This technical article provides a collection of the common drawings that are sent by the manufacturer to the client for approval and reference. The goal of these drawings is to verify that the transformers that are going to be manufactured…...

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Dec 04, 2023 | By

Contract drawings for a power transformer - The checklist you should always follow
Medium Voltage

Capacitor banks in substations: Schemes, relay settings, and protective measures

Let’s discuss capacitor banks, but this time, not the basics. Let’s study the double-star capacitor bank configuration and protective techniques used in the substations. How important is to choose the right current transformer ratio, calculate rated and maximum overload currents,…...

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Nov 27, 2023 | By

Capacitor banks in substations: Schemes, relay settings, and protective measures
Power Substation

Prepare yourself for successful inspection and testing of MV metal-clad switchgear

This article aims to provide a comprehensive analysis of the essential inspection and testing processes, emphasizing their importance in the effective functioning of medium-voltage switchgear. The inspection and testing standards included in this resource prioritize safety, functionality, and efficiency, making…...

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Nov 13, 2023 | By

Prepare yourself for successful inspection and testing of MV metal-clad switchgear
Power Substation

Mastering Interlock Logic and Schemes for a Gas-Insulated Substation (132 kV GIS Example)

As we delve deeper into this article, we will explore the various types of interlocking mechanisms used for Gas-Insulated Substation (GIS), their applications in substations, power plants, and electrical installations, as well as their significance in ensuring the sustained safety…...

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Oct 30, 2023 | By

Mastering Interlock Logic and Schemes for a Gas-Insulated Substation (132 kV GIS Example)
Power Substation

A comprehensive guide to voltage transformer (VT) circuit supervision techniques

Voltage transformer supervision, often referred to as VT fuse fail supervision relay, plays a pivotal role in safeguarding electrical systems. Its primary objective is to detect any potential failure within the voltage transformer (VT) circuit. This raises the important question:…...

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Oct 16, 2023 | By

A comprehensive guide to voltage transformer (VT) circuit supervision techniques
Power Substation

The art of the transmission switchyard design: The physical layout engineering (Case study included)

This article aims to shed some light on the so-called physical engineering activity in switchyard design in conjunction with some engineering computations. The physical layout engineering tackles the plot plan and SLD to optimize the area and coordinate with all…...

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Oct 02, 2023 | By

The art of the transmission switchyard design: The physical layout engineering (Case study included)
Premium Content

Mastering stability test of power transformer: Differential and Restricted Earth Fault (REF) protection

This technical article discusses the essentials of transformer differential protection and restricted earth fault protection schemes, contrasting the two and elaborating on why the latter is necessary. Furthermore, it reveals the outcomes of stability tests performed on a 502 MVA…...

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Sep 25, 2023 | By

Mastering stability test of power transformer: Differential and REF protection
Maintenance

Field secrets and warnings in power transformer mechanical check and visual inspection

Let’s discuss the visual and mechanical inspection procedures for oil-filled power transformers. It’s important, very important to examine a variety of key checkpoints, both external and internal to transformers, all based on the IEC 60076 standard. Each item on the…...

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Sep 11, 2023 | By

Field secrets and warnings in power transformer mechanical check and visual inspection
Premium Content

A comprehensive guide to correct calculation for transformer differential relay settings

In this technical article, we will delve into the comprehensive methodology of calculating the differential relay settings for the GE P642 relay. Each step of the process will be explored, from data collection to final setting determination. By following these…...

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Aug 28, 2023 | By

A comprehensive guide to correct calculation for transformer differential relay settings
Power Substation

Never underestimate how important it is to choose the right CT size in fault detection and protection

In the realm of electrical power systems, current transformers (CTs) play a vital role in accurately measuring and monitoring current levels. Proper sizing of CTs is essential to ensure their adequacy and enable reliable operation within specified limits. This article…...

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Aug 14, 2023 | By

Never underestimate how important it is to choose the right CT size in fault detection and protection
Energy Generation

The art of generator synchronization techniques that every true engineer MUST know about

There are two main types of generator synchronization techniques: manual and automatic. The operator performs speed and voltage adjustments on the generator and issues the breaker closure command during a manual synchronization. Manual synchronization, in its purest form, is done…...

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Aug 07, 2023 | By

The art of synchronizing generator to the grid by adjusting the generator speed and voltage


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