Detecting micro-leakages of SF₆ in gas-insulated high-voltage switchgear remains a persistent challenge. Even small leaks can gradually compromise both reliability and service life of the equipment.
Gomero has developed, in close collaboration with Trafag and Regal, a wireless retrofit solution for early detection of micro‑leakages – even in existing installations.
The challenge: Micro‑leakages masked by normal variations
To operate safely, gas‑insulated switchgear requires stable gas density. At the same time, gas pressure is continually affected by temperature, load, and operating conditions. Small SF₆ leaks can therefore resemble normal fluctuations and often go unnoticed. With traditional methods, on‑site manual inspections are required, which means leaks are typically detected only once they have grown larger.
The solution: Smart sensors and AI‑based analytics
The wireless retrofit solution consists of three interacting components:
- Maintenance‑free, high‑precision sensors for gas density and temperature
- AI‑based data analytics that filter out the influence of ambient conditions
- Continuous, wireless monitoring of critical parameters
Together, they provide a reliable basis for maintenance decisions while enabling early detection of micro-leakages.
A partnership for safe, smooth implementation
The solution combines Trafag’s gas density sensors with Gomero’s AI algorithms and wireless communication. Regal contributes technical expertise and component solutions to ensure seamless integration into different types of switchgear.
Easy installation in existing switchgear
The solution is designed for retrofit and can be installed without affecting safety‑critical components. Wireless communication enables remote monitoring of the installation and fast access to measurement data.
This makes the solution particularly suitable for:
- Aftermarket upgrades
- Modernisation of older switchgear
- Life‑extension of existing assets
The result: From emergency repairs to planned maintenance
With continuous monitoring of micro‑leakages, operators gain:
- Early detection of small SF₆ leaks
- Reduced need for time-consuming on-site inspections
- More accurate, condition‑based maintenance
- Improved operational reliability and extended equipment lifespan
The solution enables a shift from reactive to data‑driven, preventive maintenance.
Future‑ready digital condition monitoring
This solution shows that condition monitoring can be digitalised without replacing existing assets. With wireless retrofit, intelligent sensor technology, and AI‑based analytics, you get a scalable, future‑proof solution for micro‑leakage detection.
For the energy and process industries, this is an important step towards smarter asset management and higher availability in critical infrastructure.
Next step
Discover how wireless retrofit and condition monitoring can enhance the performance and reliability of your switchgear and machine systems.
