Transformer failures don’t happen overnight - they evolve silently

One of the most overlooked realities in transformer asset management is that insulation failure is a slow, progressive process, not a sudden event.


📌 In the insulation degradation pathway, the entire failure chain is primarily controlled by two critical factors:

i. Dissolved Moisture
ii. Heat

Together, they accelerate chemical degradation of oil impregnated cellulosic insulation, leading to:

1). Acid and by-product formation
2). Dielectric and mechanical weakening
3). Partial discharge and corona activity
4). Ultimately, irreversible cellulose degradation and insulation failure

💡 Breaking the Failure Chain Before It Escalates

The PTss Online Transformer Dryout System directly addresses these root controlling factors:

✅ Continuously removes dissolved moisture and contamination from oil and insulation during normal operation
✅ Stabilizes insulation chemistry and slows cellulose aging
✅ Maintains high dielectric strength, suppressing PD and corona
✅ Prevents the cascading degradation sequence

The Result:

1). Extended transformer life
2). Higher reliability and uninterrupted operation
3). Reduced risk of catastrophic failures
4). Stronger confidence in asset health and grid performance

🔍 In Essence:

i. If moisture and heat initiate insulation aging, online dry-out is the most effective way to arrest it in real time.

ii. Asset life extension is no longer reactive maintenance—it is continuous prevention.