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…...
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Jan 09, 2023 | By Salem Alshahrani

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…...
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This technical article/guide requires a Premium Membership. You can choose an annually based Plus, 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.Check out each plan’s benefits and choose the membership plan that works best for you or your organization.
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Nov 14, 2022 | By Edvard

Inside Variable Frequency Drive (VFD) Panel: Configuration, Schematics and Troubleshooting
Proper analysis of the VFD’s power and control circuit diagrams is essential for successful troubleshooting. But before starting any analysis, you must know how your system connected through VFD works…...
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This technical article/guide requires a Premium Membership. You can choose an annually based Plus, 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.Check out each plan’s benefits and choose the membership plan that works best for you or your organization.
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Jul 25, 2022 | By Mohammed Ayman

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…....
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This technical article/guide requires a Premium Membership. You can choose an annually based Plus, 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.Check out each plan’s benefits and choose the membership plan that works best for you or your organization.
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May 02, 2022 | By Edvard

Where and how to find the root cause of a power transformer failure (troubleshooting guide)
When Whatsapp, Facebook, or Gmail is down, it’s manageable, but if transformers fail, the entire business comes to a standstill. No-power-no-business transformers, as the heart of every substation, impact industries…...
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This technical article/guide requires a Premium Membership. You can choose an annually based Plus, 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.Check out each plan’s benefits and choose the membership plan that works best for you or your organization.
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Dec 27, 2021 | By Rahmatullah Alam

On-load tests you MUST perform during the switchgear commissioning process
On-load tests constitute the final activity in the commissioning process of low voltage or medium voltage switchgear. They are carried out immediately after the newly installed equipment is energized from… Read more
Nov 22, 2021 | By Edvard

Learn how to prepare for transformer acceptance tests and final inspections
Generally speaking, acceptance tests and final inspections of a transformer should not have any improvisations, but they usually do have. The essential purpose in carrying out the final tests on…...
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This technical article/guide requires a Premium Membership. You can choose an annually based Plus, 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.Check out each plan’s benefits and choose the membership plan that works best for you or your organization.
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Nov 01, 2021 | By Edvard

On-site transformer diagnostic measurements: The art of troubleshooting and maintenance
Transformer life management requires a portfolio of the different kinds of on-site electrical tests to be performed. This is where things get complicated. The purposes for performing these tests include… Read more
Sep 13, 2021 | By Edvard

A quick reminder to substation transformer basics and safety precautions, dos and don’ts
Let us remind ourselves of the basics of substation transformer parts, their operation principles, and do’s and don’ts for safety measures and precautions. For novice substation engineers it’s important to… Read more
Aug 16, 2021 | By Edvard

My worst experience in testing and commissioning power transformers (and how I fixed things up)
Reliable and secure electric power delivery is dependent on power transformers’ reliability that is enhanced significantly by sound test plans. These test plans shall be prepared by both manufacturers and…...
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This technical article/guide requires a Premium Membership. You can choose an annually based Plus, 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.Check out each plan’s benefits and choose the membership plan that works best for you or your organization.
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Apr 29, 2021 | By Salem Alshahrani

Troubleshooting Buchholz relay and recommended actions when it operates
This technical article provides guidance on the possible causes of Buchholz relay operation and recommends actions following the receipt of a Buchholz surge trip or gas collection alarm. It covers… Read more
Feb 15, 2021 | By Edvard

Functional testing of IEC 61850 based Substation Automation Systems
Testing the protection element settings of IEDs and protection schemes are well established practices when testing a Protection, Automation and Control (PAC) system. Tools and methods are available to support… Read more
Feb 08, 2021 | By Christian B. and Eugenio C. at OMICRON

Recommendations for the successful erection of medium voltage switchgear
Electrical engineers working on project execution know that switchgear erection brings many challenges, no matter the voltage level. The switchgear cannot always be assembled in the factory and shipped to…...
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This technical article/guide requires a Premium Membership. You can choose an annually based Plus, 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.Check out each plan’s benefits and choose the membership plan that works best for you or your organization.
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Feb 01, 2021 | By Edvard

Learn how to read and analyze control circuits of MV gas insulated switchgear (GIS)
Previously, an introductory part of the GIS and its components were discussed to pave the way for the GIS control circuits. Moreover, the single-line diagram example for a double-bus and…...
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This technical article/guide requires a Premium Membership. You can choose an annually based Plus, 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.Check out each plan’s benefits and choose the membership plan that works best for you or your organization.
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Jan 25, 2021 | By Salem Alshahrani

How to measure power quality? What devices should you use and what to measure?
Measuring power quality and finding a bugbear in the network which is messing with the power are considered a highly paid job. Every electrical network and its problems with harmonics,… Read more
Jan 18, 2021 | By Edvard
