Description

Performance & Moisture Control

Transformer conservator tanks continuously inhale and exhale air due to temperature-driven oil expansion and contraction. If that incoming air contains moisture, it can degrade insulating oil and reduce dielectric strength.

ZEOZORB Transformer Breathers:

✔ Dry incoming air before it enters the conservator tank
✔ Reduce relative humidity levels to below 5% RH
✔ Condition air to below 100 PPM moisture
✔ Help maintain oil moisture content below ASTM limits

Testing shows ZEOZORB breathers outperform silica gel by over 75% at average operating temperatures of 77°F. In extremely dry airspace conditions (below 100 PPM), the system can even draw moisture out of the insulating oil itself, supporting extended transformer life

Engineered Design & Construction

ZEOZORB Transformer Breathers are available in multiple model sizes to match transformer ratings and oil volume.

Key features include:

✔ Bi-directional valved airflow for optimal efficiency
✔ ZEOLITE desiccant with up to 28% adsorption capacity by weight
✔ Rugged cast aluminum or ABS housing
✔ UV-resistant polycarbonate sight window
✔ Visual color-change indication (blue to beige)
✔ Refillable design for easy maintenance

Connection options include NPT, BSP, and flanged configurations for flexible installation

Model Range & Transformer Sizing

ZEOZORB Transformer Breathers are available in multiple sizes including:

• R Series (for <1.25 mVA to 6 mVA transformers)
• W & Y Series (up to 100 mVA applications)

Each model is selected based on:

• Conservator tank volume
• Transformer rating
• Maximum oil transfer quantity
• Required desiccant service life

Operational Impact

Proper moisture control in transformer conservator tanks helps:

✔ Prevent dielectric loss
✔ Reduce internal corrosion
✔ Minimize oxidation and sludge formation
✔ Extend insulating oil life
✔ Increase MTBF (Mean Time Between Failures)
✔ Lower long-term O&M costs

More than 70% of lubrication failures are caused by surface degradation, with 20% directly related to corrosive wear from water — controlling moisture at the point of air entry is critical.