Low Voltage
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The Ten Most Dangerous Noises in a Low-Voltage Substation
Let ‘s talk about the acoustic diagnostics of low-voltage substations, focusing on the ten most dangerous acoustic emissions, their underlying physics, and diagnostic methodologies. In the realm of electrical distribution, low-voltage (LV) substations—typically operating at or below 1000V AC—form the…...
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Apr 20, 2026 | By Edvard Csanyi
High Voltage
The Most Important Post-Installation Tests of a Gas-Insulated Substation (GIS)
This technical article explains some of the recommended and most important tests that MUST be performed on the Gas-Insulated Substation after the installation. Such tests are visual inspections, testing for control of cables, bus leakage and gas quality checks, main… Read more
Mar 02, 2026 | By Edvard Csanyi
Maintenance
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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Substation Maintenance Transition Toward Clever Data-driven Asset Management
This article explores the complete spectrum of substation maintenance philosophies from Corrective and Preventive Maintenance to Predictive, Condition-Based, and ultimately Risk-Based Maintenance (RBM). It explains how each approach evolved, where it fits within modern substations, and how utilities can transition…...
Membership Upgrade Required
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.
Spring Gift! - 20% Off on Pro Membership Plan with coupon 110KVAC
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Feb 23, 2026 | By Muhammad Kashif
Electric Motor
Eleven Common Problems in Electric Motors and Their Remedy
Generally, electric motors are highly reliable (except when they’re not!) machines that require little maintenance. In practice, often even this little care is neglected, and problems with motors come ‘unexpected’ like a hurricane. Let’s discuss the eleven most common problems… Read more
Feb 16, 2026 | By Edvard Csanyi
Maintenance
A Case Study of Substation Temperature Monitoring System
The pilot project of installation the temperature monitoring system (researched, developed and manufactured by VTI) deployed at critical substations on the power system managed and operated by Vinh Phuc Power Company (a member of Northern Power Corporation – EVNNPC) in… Read more
Jan 05, 2026 | By Group of Authors
High Voltage
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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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…...
Membership Upgrade Required
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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Jun 30, 2025 | By Edvard Csanyi
Maintenance
Thermal conditions of electrical equipment and temperature monitoring
Loose connections or worn out contact surfaces are the root causes of electrical system conduction troubles. They cause a local temperature increase, which worsens the contact quality even further as the current increases. This causes thermal runaway, which damages the… Read more
May 05, 2025 | By Edvard Csanyi
Low Voltage
Good operating practices for switchgear circuit breakers and contactors
The purpose of this guideline is to provide suggested practices for the operation and inspection of medium voltage (2 to 13.8 kV) and low voltage (200 to 480 volt) draw-out switchgear circuit breakers and contactors. Good operating practices are critical… Read more
Jan 20, 2025 | By Edvard Csanyi
Maintenance
Bringing new life to an old Air-Insulated Substation (AIS)
An increasing number of substations globally are aging, while the construction of new ones is hindered by competitive limitations, rigorous environmental rules, and community acceptance issues. Simultaneously, the demand for electricity is consistently escalating, resulting in increased short circuit levels… Read more
Nov 07, 2024 | By Edvard Csanyi
Maintenance
Practical lesson in grounding and bonding of Gas-Insulated Switchgear (GIS)
With the exception of SF6-to-air bushings terminals, all active portions of gas-insulated switchgear (GIS) are contained within grounded enclosures, which means that they are not susceptible to inadvertent contact. This makes gas-insulated switchgear intrinsically safe. In addition, numerous grounding procedures… Read more
Oct 09, 2024 | By Edvard Csanyi
Maintenance
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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Managing power transformers in service: The most important economic aspects
Utilities are under intense pressure to maximize the use of their current transformer asset base in order to keep rates down while yet providing excellent reliability. In order to achieve higher loading during both regular and emergency operations, long-standing loading…...
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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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Sep 16, 2024 | By Edvard Csanyi
Maintenance
Substation Equipment Maintenance: Often Neglected Until Something Big Drops Dead
The aging process starts the moment new substation equipment is put into service; how quickly it happens depends on a number of factors, including the equipment’s use, the environment, the quality of maintenance, and many more. However, things aren’t the… Read more
May 13, 2024 | By Edvard Csanyi
Electrical Machines
Insulation tests on electric motors and generators: DC High Potential Testing (HiPot)
The objective of this technical article is to provide certain criteria and time intervals for conducting insulation tests on electric motors, generators and other electrical equipment. Testing is done to ensure that the equipment is intact and to provide a… Read more
Nov 06, 2023 | By Edvard Csanyi
Maintenance
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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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…...
Membership Upgrade Required
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.
Spring Gift! - 20% Off on Pro Membership Plan with coupon 110KVAC
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Sep 11, 2023 | By Muhammad Kashif
Maintenance
Thoughtful considerations to design MV/LV distribution substations for extended service life
The installation of a new MV/LV electrical substation is often part of a more global project, and it is not always the subject of very detailed attention. However, the consideration of simple and practical criteria is not always dictated by… Read more
Sep 04, 2023 | By Power Systems and Services
