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Category 'High Voltage' - Technical Articles

“High Voltage” category refers to technical articles related to applications of rated voltage over 35,000 V (35 kV) and up to 800 kV. This also includes an Ultra High Voltage (UHV) transmission networks. This category includes topics related to electrical transmission theory, HV switchyard specifications and design advice, maintenance tips, testing and commissioning rules, etc.

Energy and Power

How to estimate transformer performance and characteristics

Assuming that you have a general understanding of transformer parameters and IEC Standards in use, this technical article is aimed at providing a variety of tools and data to make an educated assessment of the principal transformer performance ratings. Derived…...

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Jul 28, 2025 | By

How to estimate transformer performance and characteristics
High Voltage

What to expect from an old GIS, and what are the options for support and life extension

Every new GIS switchgear eventually gets old and obsolete at the end of its lifetime. Problems with GIS, as with every other switchgear type, typically start after the midpoint of the lifecycle. This is the point at which the end…...

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Jun 30, 2025 | By

What to expect from an old GIS and what are the options for support and life extension
High Voltage

Execution of a Turnkey Substation Project: How not to step on the same rake again

Behind the successful execution of a turnkey substation project is always successful project management. Young engineers working on the execution of substation projects often repeat the same mistakes that often lead to unforeseen project costs. Generally speaking, management of turnkey…...

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Mar 03, 2025 | By

Execution of a Turnkey Substation Project
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)
High Voltage

Tricks in designing and analyzing schematics and diagrams of high voltage substations

High voltage power substations are complex networks of power and control connections, represented by design elements like- Single Line Diagrams, layout and block diagrams, schematics, logic diagrams, schedules, and so many more. Wiring diagrams and schematics, in a sense, are…...

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Aug 08, 2022 | By

Tricks in designing and analyzing schematics and diagrams of high voltage substations
High Voltage

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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Jul 26, 2021 | By

MV/HV switchgear (circuit breaker) switching capability and suitability for specific applications
High Voltage

Testing and commissioning of MV/HV switchgear (wiring, final inspection and checks)

This article continues the series of articles dedicated to the erection, testing and commissioning of MV/HV switchgear by describing the most important precautions and recommendations in various procedures and steps. Starting from the wiring of low voltage command and signal…...

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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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Oct 28, 2020 | By

Guide to testing and commissioning of MV/HV switchgears (Wiring, final inspection and checks)


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