Defective transformer bushings can cost companies millions in lost revenue, repairs and overtime costs. Around 90 percent of all transformer bushing defects are caused by moisture penetrating through faulty seals, cracks or closures. Moisture compromises the insulation of the transformer bushing and can cause an explosive failure, damaging the transformer and other components and jeopardizing employee safety.

Regular inspections can detect impending defects in transformer bushings before they occur. However, conventional inspection methods such as micro-ohm tests or power factor measurements can be labor-intensive and require the system to be taken out of service.

The T1020-HD thermal imaging camera and the A310 f. © Flir

However, if companies integrate thermal imaging technology into their inspection processes, all system components can be checked as often as necessary during operation. With a portable thermal imaging instrument such as the Flir T1020 HD thermal imaging camera, they can efficiently localize temperature anomalies. This camera provides detailed images and precise temperature readings.

Another suitable measurement and monitoring method is the use of permanently installed thermal imaging sensors such as the Flir A310 f. This camera provides temperature trends of critical components around the clock and the data can be transmitted via a local network or cloud-based solutions.

Thermal imaging technology therefore makes it possible to build a more reliable electrical infrastructure. It allows temperature data to be captured in real time, enabling operators to ensure grid safety and efficiency. In addition, the condition of transformer bushings can be checked from outside the perimeter from a safe distance, reducing risks. By using thermal imaging technology for regular or permanent monitoring, companies can save millions by avoiding overtime and repair costs. It allows you to detect hotspots on transformer bushings before a failure occurs, avoid unnecessary downtime and perform scheduled maintenance when needed. as