Conservator-Type Distribution Transformers | Reliable Power for Expanding Networks

What Is a Conservator-Type Transformer?

These transformers have an oil expansion tank — called a conservator — that allows the main tank to “breathe” through an air filter or silica gel breather.

It prevents internal pressure buildup while keeping the oil clean.

How It Works

When the transformer heats up, the oil expands into the conservator tank; when it cools down, the oil returns to the main tank.

This process stabilizes internal pressure and extends the life of insulation materials.

Advantages

• High oil capacity ensures excellent cooling

• Easier oil inspection and maintenance

• Reliable performance under load fluctuations

Typical Applications

• Urban and regional power networks

• Industrial complexes

• Power plants and substations

Nasaen Energy’s Approach

We supply conservator-type transformers optimized for efficiency and long service life.

Each unit is selected from trusted manufacturers based on voltage, capacity, and environmental requirements.