Introduction
When selecting a transformer, one of the most common questions is: oil immersed or dry type transformer?
Both types have their advantages, and choosing the right one depends on your application, environment, and budget.
1. What is an Oil Immersed Transformer?
Oil immersed transformers use insulating oil for:
- Cooling
- Insulation
They are widely used in:
- Outdoor applications
- Power distribution networks
- Industrial plants
2. What is a Dry Type Transformer?
Dry type transformers use air instead of oil for cooling.
They are commonly used in:
- Indoor installations
- Commercial buildings
- Hospitals and data centers
3. Key Differences
Feature Oil Immersed Dry Type Cooling Oil Air Installation Outdoor Indoor Cost Lower Higher Maintenance Moderate Low Fire Risk Higher Lower
