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Category 'Maintenance' - Technical Articles

The “Maintenance” category refers to the technical articles dedicated to the maintenance of low- medium- and high-voltage equipment and substations, such as circuit breakers, disconnectors, CTs, VTs, transformers, air-insulated switchgear (AIS), gas-insulated switchgear (GIS), relay protection panels, power and control cables. Special attention is given to the problems and solutions that maintenance enginers experience through the maintenance process.

Maintenance

Hints and warnings for proper installing, earthing and testing of current transformers

Welcome to the third and final part of our comprehensive series on current transformers (CTs) and their secondary circuits. In Parts 1 and 2, we covered various aspects of CT operation, secondary injection testing, burden calculations, CT circuit connections, safety…...

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Jul 31, 2023 | By

Hints and warnings for proper installing, earthing and testing of current transformers
Maintenance

A detailed checklist for the installation and commissioning of Gas-Insulated Substations (GIS)

Gas-insulated substations (GIS) are critical components of modern electrical power systems, providing efficient and compact solutions for the transmission and distribution of electricity. These substations utilize sulfur hexafluoride (SF6) gas as an insulating and arc-quenching medium, offering several advantages over…...

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Jul 17, 2023 | By

A detailed checklist for the installation and commissioning of Gas-Insulated Substations (GIS)
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
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
Maintenance

Capacitor banks protection, cautions and maintenance tips

It would not be wrong to say that humanity has never consumed so much electricity, and to make the paradox bigger, there is still a lack of energy. The sharp increase in consumption in the last couple of decades has…...

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Apr 04, 2022 | By

Capacitor banks protection, cautions and maintenance
Electric Motor

Never let an electric motor drop dead. Learn how to listen and read the motor’s soul.

Like any other machine, electric motors are vulnerable to faults, which might lead to catastrophic failure of the machine in the long run if left unmonitored. In this technical article, I will try to shed some light on the possible…...

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Nov 29, 2021 | By

Never let an electric motor drop dead. Learn how to listen and read the motor’s soul.
Maintenance

Practical troubleshooting of power interruption in fully operational 33/11 kV substation

Power interruptions are one of the most critical issues that require a swift and effective remedy in a power substation. The power utility substations in the voltage level of 33/11 kV, 11/0.4 kV are generally the major distribution hub and,…...

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Oct 04, 2021 | By

Practical troubleshooting of power interruption in fully operational 33/11 kV substation
Maintenance

Uprating and expanding existing power substations (good practice and recommendations)

All actions involving substation construction require heavy planning. This is especially true of a program of substation uprating or expansion. The trend is toward the assessment of existing substations and individual equipment to develop a predictive maintenance and substation life…...

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Jul 05, 2021 | By

Uprating and expanding existing power substations (good practice and recommendations)
Maintenance

Learn how to troubleshoot the operation of distribution substations (problematic breakdowns)

The distribution substation is one of the most important yet arguably the most troublesome section of the power system. Prolonged operation and frequent switching make distribution substations more prone to breakdowns and failures. While the part of preventive maintenance is…...

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Jun 14, 2021 | By

Troubleshooting operation of distribution substation
Low Voltage

Learn how to operate an unknown energized low voltage switchgear (practical experience)

Switchgear is an integral part of the electrical protection system, which is used for isolating the faulty parts as well as de-energizing the downstream equipment during maintenance or any other usages. “Energized” is the term that signifies that the component…...

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Apr 19, 2021 | By

Learn how to operate an unknown energized low voltage switchgear (practical experience)


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