Oil Type Distribution Transformers (25 kVA – 3150 kVA): IEC/IEEE-Compliant, Project-Ready Delivery
TEK Transformatör: A Brand That Drives Power
Tek Transformatör leverages 30 years of industry experience to deliver reliable power conversion, mechanical durability and full compliance with international standards. With engineering expertise and project-based customization, the company provides transformers built for demanding industrial environments and long-term performance.
We engineer region-compliant transformer solutions.
Optimized production ensures on-time delivery.
We provide post-delivery technical support.
Oil Type Transformer
Deliver reliable power distribution with top-quality oil type transformers engineered for efficiency, durability, and long-term performance. Our solutions are designed to meet the demanding requirements of modern grid distribution and industrial energy systems worldwide.
Manufactured with advanced insulation technology and precision-engineered components, our oil-immersed transformers ensure stable operation, reduced maintenance needs, and consistent energy output. From utility networks to industrial facilities, each unit is built to support safe, efficient, and uninterrupted power delivery across a wide range of applications.
Technical Design Specifications
- Table 1. Product General Details
| Power | 25–3150 kVA |
| Primary Voltage | 400–36,000 V |
| Secondary Voltage | 208Y/400 V to 14,400 V |
| General |
|
| Oil Type | Mineral Oil or Natural Oil |
| Impedance Voltage | According to IEC (2.5%-10%) |
- Table 2. Environmental & Thermal Design Conditions
| Standard Ambient Temperature Range | −25 °C to +50 °C |
| Extended Ambient Temperature Range (Optional) | −45 °C to +55 °C |
| Altitude | |
| Standard maximum altitude: ≤ 1000 meters (3280 feet) above sea level | |
| For altitudes > 1000 meters: Thermal derating will be applied (Derating factor: approx. 0.55% to 1,2% per 100 m) | |
| Insulation Class | |
| Class A (105 °C) | Standard oil-paper insulation (mineral oil + cellulose paper) |
| Class F (155 °C) | Thermally upgraded paper or synthetic insulation; used in special applications or where higher temperature rise is acceptable |
| Class H (180 °C) | High-temperature-resistant materials (Nomex + silicone or ester fluids); used in compact or high-load designs |
TEK Transformatör: A Brand That Drives Power
Tek Transformatör leverages 30 years of industry experience to deliver reliable power conversion, mechanical durability and full compliance with international standards. With engineering expertise and project-based customization, the company provides transformers built for demanding industrial environments and long-term performance.
Engineered Excellence in Oil Type Transformer Solutions
High-Efficiency Power Solutions
Minimize energy losses and maximize operational efficiency with high-efficiency oil-immersed transformer units designed for stable voltage regulation and consistent performance across distribution networks and industrial facilities.
Hermetic & Conservator (Expansion Tank) Oil-Immersed Designs
We manufacture both hermetic (fully sealed) and conservator-type (expansion tank) oil-immersed transformers to match different operating conditions and project requirements. These designs deliver reliable insulation and efficient cooling, while protecting internal components against moisture and oxidation supporting long service life in demanding outdoor installations.
Durable Design for Demanding Environments
Our oil-immersed distribution transformers are built for reliable outdoor service, with robust construction and sealing options that help withstand temperature variations, mechanical stress, and long-term environmental exposure.
Fast Delivery & Project-Ready Manufacturing
We understand project timelines. Our optimized production process enables fast delivery without compromising quality. Each unit is fully tested and prepared to integrate seamlessly into your power system as a complete power solution.
Distribution transformers safely step down medium voltage in grid, industrial, commercial, and renewable energy applications, providing stable and reliable power.
Why Choose Our Oil Type Transformers?
Our oil type transformers are engineered to deliver reliable power distribution with a strong focus on efficiency, durability, and long-term performance. Designed for modern grid distribution and industrial energy systems, each unit meets strict technical and quality requirements.
