Importance of Moisture Control in High Frequency Transformers Moisture is one of the primary enemies of insulation systems in high frequency isolation transformers . If not properly removed, it can lead to reduced dielectric strength, partial discharge, and even catastrophic failure. To avoid this, vacuum drying is one of the most effective methods. By maintaining the right vacuum pressure and temperature, moisture deep within the core and winding insulation can be eliminated efficiently. For high frequency flyback transformers , proper moisture control ensures stable output voltage and minimizes power loss. Similarly, high frequency step up transformers used in high-voltage circuits benefit from improved insulation reliability, resulting in better energy conversion and extended operational lifespan.