Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

Access free engineering resources from IEE Business—covering power design, circuit layout, equipment selection, and troubleshooting. Expert-developed guides help engineers, procurement, and project teams make better decisions. Stay ahead on smart grids, renewables, efficiency, and AI tools. Improve reliability, reduce downtime, and enhance outcomes with real-world solutions. Explore our knowledge hub today.

Dry Type Transformer Maintenance

Operational Guide for Life Cycle Maintenance and Preventive Testing of Dry Type Transformers

1. Heading and Context During long-term operation, dry-type transformers often face risks of localized overheating and insulation breakdown caused by dust accumulation, moisture, or loose fasteners. How can scientific maintenance methods eliminate these potential failures in their infancy? Based on

By Rockwill 04/17, 2026
Dry-type Transformer

Deep Analysis of Partial Discharge Control and Online Monitoring Technology for Dry-type Transformers

1. Introduction: Partial Discharge - The "Invisible Killer" of Dry-type Insulation For dry-type transformers, especially those using Cast Resin (CR) technology, Partial Discharge (PD) is a core indicator determining their service life. Unlike oil-immersed transformers, the insulation of dry-type uni

By Rockwill 04/15, 2026
110kV Transformer

110kV Transformer Partial Discharge Ultrasonic Localization Technology

Importance of Partial Discharge Localization in 110kV Live Line Testing Partial discharge (PD) serves as a critical early warning sign of insulation deterioration within 110kV transformers. If left undetected, persistent discharge can cause irreversible carbonization of the oil-paper insulation, eve

By Vziman 04/08, 2026
Power Transformers

8 Key Measures to Reduce Partial Discharge in Power Transformers

Growing Requirements for Power Transformer Cooling Systems and the Function of Coolers With the rapid development of power grids and the increase in transmission voltage, power grids and electricity users are demanding increasingly higher insulation reliability for large power transformers. Since pa

By Echo 12/17, 2025
HV Switchgear

How to Monitor Partial Discharge in RMUs Safely？

Insulation degradation in power equipment is generally caused by multiple factors. During operation, insulation materials (such as epoxy resin and cable terminations) gradually deteriorate due to thermal, electrical, and mechanical stresses, leading to the formation of voids or cracks. Alternatively

By Oliver Watts 12/09, 2025
Large power transformer

7 Key Steps to Ensure Safe and Reliable Installation of Large Power Transformers

1. Maintaining and Restoring the Factory Insulation Condition When a transformer undergoes factory acceptance tests, its insulation condition is at its optimal state. Thereafter, the insulation condition tends to deteriorate, and the installation phase may be a critical period for sudden degradation

By Oliver Watts 10/29, 2025
Power Systems

Why You Can't Remove Siemens GIS Bushing Cover for PD Testing

As the title suggests, when performing live partial discharge (PD) testing on Siemens GIS using the UHF method—specifically by accessing the signal through the metal flange of the bushing insulator—you must not directly remove the metal cover on the bushing insulator. Why? You won’t realize the dang

By James 10/24, 2025

Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

All

Operational Guide for Life Cycle Maintenance and Preventive Testing of Dry Type Transformers

Deep Analysis of Partial Discharge Control and Online Monitoring Technology for Dry-type Transformers

110kV Transformer Partial Discharge Ultrasonic Localization Technology

8 Key Measures to Reduce Partial Discharge in Power Transformers

How to Monitor Partial Discharge in RMUs Safely？

7 Key Steps to Ensure Safe and Reliable Installation of Large Power Transformers

Why You Can't Remove Siemens GIS Bushing Cover for PD Testing

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