Note: Capacity, tapping range, connections, certification requirements, etc. are customizable. Please contact us for more details.
Designed to maximize efficiency and durability, this dry type distribution transformer features excellent heat dissipation, low partial discharge, and optional AN/AF cooling with F or H insulation class. Its space-saving structure and corrosion-resistant performance make it well suited for ports, water conservancy projects, and harsh industrial environments. Send us your requirements for a fully customized solution.
Specification
| Voltage Levels |
35 kV and below (including dual voltage) |
| Capacity |
15000kVA and below |
| Tapping Range |
±2×2.5% (or customer specify) |
| Frequency |
50Hz or 60 Hz |
| Insulation Level |
Voltage grades: 6kV / 10kV / 20kV / 35kVPower frequency withstand voltage: 28kV / 50kV / 70kV / 80kV Lightning impulse voltage: 75kV / 125kV / 170kV / 200kV |
| Protection Grade |
NEMA 1 or NEMA 3R |
| Connections |
Dyn 11; Yyn0 or other |
| Cooling Type |
AN/AF |
| Insulation Class |
F or H |
| Application Conditions |
less than 1000 meters above sea level, the environment temperature is lower than 40 ℃. Correction should be carried out in accordance with standards if the application is beyond the above conditions. |
| Application Scenario |
Due to its good moisture-proof and anti-corrosion performance, dry-type transformers are widely used in power plants, ports, rail transit, water conservancy and hydropower, airports, dock CNC mechanical equipment and other places. |
Features
- Safe & Maintenance-Free Operation: Built with flame-retardant and non-polluting materials, this transformer can be installed directly in the load center. Its maintenance-free design reduces operating costs, while custom voltage, tapping, and connection options, etc. ensure a better fit for different applications.
- Excellent Moisture Resistance: This distribution transformer designed to perform reliably even in environments with up to 100% humidity. After shutdown, the transformer can be restarted without pre-drying, minimizing downtime and improving operational efficiency.
- Low Loss & Efficient Heat Dissipation: Featuring low loss, low partial discharge, and low operating noise, this distribution transformer provides excellent heat dissipation and can handle up to 150% of the rated load under forced-air cooling. Cooling methods can also be tailored to specific operating conditions.
- Comprehensive Temperature Protection: This distribution transformer is equipped with an advanced temperature monitoring and protection control system that continuously safeguards the transformer, prevents overheating, and enhances the operational safety and reliability of distribution system.
- High Reliability: Developed and validated through extensive operational experience and long-term service testing, this distribution transformer delivers outstanding reliability and stable performance and can be customized to meet unique project requirements.
- Compact & Space-Saving Design: Featuring a compact structure and lightweight construction, this distribution transformer minimizes installation space requirements while reducing infrastructure and installation costs.
Application
With flame-retardant construction, and high reliability, this distribution transformer is ideal for critical facilities such as airports, ports, manufacturing plants, and transportation systems. Can be customized as needed to suit a wider range of use applications.

Tips: What is the difference between dry type transformers and oil immersed transformers?
Dry-type transformers and oil-immersed transformers mainly differ in insulation and cooling media, resulting in divergent performance in safety rating, maximum capacity, maintenance requirements and applicable scenarios.
Dry-type transformers rely on air and solid insulation materials (such as epoxy resin or VPI coatings) for heat dissipation and electrical insulation without any insulating oil, so they feature superior flame retardancy and eco-friendliness, ideal for commercial buildings, data centers and medical facilities.
Oil-immersed transformers adopt insulating oil as both cooling and dielectric medium. Winding heat is transferred into the oil and dissipated via natural or forced oil circulation. This delivers outstanding heat dissipation and higher overload tolerance, making them fit for high-capacity facilities like substations and heavy industrial power systems. However, flammable insulating oil brings potential fire hazards, which necessitates strict fire prevention standards plus periodic oil sampling, testing and routine maintenance.