INSULATED AC TRANSFORMERS – POWER SOURCE TX SERIES
Our Power Source TX series AC transformers are insulated to protect them from humidity and moisture. To achieve this, all TX transformers undergo a process called impregnation or dipping.
Varnish Impregnation / Varnish Dipping AC Transformer
The impregnation process, more formally known as varnish impregnation, involves dipping the AC transformer into a liquid varnish, removing it, and leaving it to cure. This process effectively saturates and seals the transformer's windings, improving electrical insulation, resistance to moisture and dust, promoting better thermal regulation and reducing vibration noise. Added benefits of anti-fungal capabilities as porous surfaces on the AC transformer are now sealed, enabling these power supplies to be suitable for tropical environments.
The varnish dipping process is standard for our range of Powersource TX and TO series AC Transformers. View our range here.

Vacuum Pressure Impregnation for Rigid AC Transformer Applications
For users requiring protection and insulation for more specific, rigid, or specialist applications, the vacuum pressure impregnation process can provide a far more thorough insulation. This process removes air via vacuum, effectively saturating the AC transformer in varnish or resin, and provides a far higher degree of protection in high-vibration applications, preventing failures caused by mechanical ‘hum’.
Need Help? Contact Us!
If you are unsure which type of insulation seal you require for an AC transformer, whether for a high-vibration application or installation in a humid environment, the ADM team is here to help. Send any questions to our contact page here or call the team directly on 1300 236 467.





