High-performance cast-resin dry-type transformer is designed for safe, eco-friendly power distribution in commercial, industrial, and renewable energy applications. Built with flame-retardant epoxy resin and corrosion-resistant metal components, this unit features three vibrant red cast-resin windings mounted on a robust black frame, offering superior fire safety, low noise, and zero oil leakage. Rated for capacities up to 8000KVA (international) and voltage levels from 10kV to 35kV, it fully complies with IEC 60076 and GB/T 10228 standards. Customizable in capacity, voltage ratios, and cooling configurations, it requires minimal maintenance with easy access for inspections and cleaning, eliminating the risk of oil spills and reducing long-term operating costs. Ideal for indoor and urban environments where safety and sustainability are priorities, it delivers reliable, long-lasting performance with optional personalized engineering support.
These transformer dry type units are ideal for indoor installations in commercial, industrial, and special environments. With natural air cooling (AN) or forced air cooling (AF), reliable temperature control, and robust copper windings, our dry type transformer types deliver stable, energy-efficient power distribution.
The dry-type transformers come with full custom design support, 24/7 technical assistance, and comprehensive after-sales service including installation guidance and maintenance training. As a market-leading choice compliant with international safety standards, they are trusted in commercial, industrial, and renewable sectors worldwide for reliable, eco-friendly, low-maintenance operation. With factory-direct pricing, flexible bulk-order packages, and high long-term cost efficiency, they offer unbeatable value without compromising on safety, quality, or performance.
Product Features
Our dry type transformer stands out for its safety, reliability, and user-friendly design. Here are the key highlights:
• Fire Safety and Environmental Friendliness
No flammable oil means zero risk of leaks or spills. Dry-type transformer is self-extinguishing, non-polluting, and perfect for hospitals, schools, offices, and high-humidity or corrosive locations.
• Advanced Cooling System
Standard air natural cooling (AN) supports 100% rated load continuously. Optional forced air cooling (AF) boosts capacity by 40-50%. When load exceeds 65% or ambient temperature rises, the intelligent fan system activates automatically for better heat dissipation, lower losses, and extended lifespan.
• Reliable Temperature Control
Built-in temperature controller with platinum resistance sensors monitors windings in real time. Features include three-phase or max-phase display, automatic/manual fan start, over-temperature alarm at 130°C, and trip at 150°C (fan starts at 100°C, stops at 80°C). This ensures safe, unattended operation.
• High-Quality Materials
Primary and secondary windings use premium copper conductors with axial cooling ducts for excellent heat dissipation. Inter-layer, inter-segment, and turn insulation offers high mechanical and electrical strength with matching thermal expansion coefficients. The core employs high-permeability cold-rolled grain-oriented silicon steel sheets in a 45° full mitered structure with steel strap clamping and anti-moisture, anti-corrosion resin coating for low loss, low noise, high strength, and excellent humidity/corrosion resistance.
• Robust Construction and Ease of Use
Simple, aesthetic structure with convenient installation and maintenance. Strong short-circuit withstand capability, low partial discharge, and high overload capacity. Suitable for various dry type transformer types including ventilated and resin-encapsulated designs.
• Proven Testing
Every unit undergoes routine, type, and special tests before shipment, ensuring stable and reliable performance.
These features make our dry type transformer a top choice for demanding applications where safety, efficiency, and minimal maintenance are essential
Specifications & Parameters
| Category | Specification / Description |
| Capacity | Three-phase 30-8000KVA |
| Voltage Level |
35kV and below (all common voltages) |
| Tapping Range | ±5%, ±2×2.5% or customized per user requirements |
| Tapping Method | Off-load (no excitation) tapping |
| Connection Group | Dyn, Yyn, Yd |
| Frequency | 50Hz or 60Hz |
| Cooling Method | AN (natural air) or AF (forced air) |
| Protection Degree | IP00, IP20, IP30, or as required |
| Insulation Class | F or H class |
| Impedance Voltage | Standard value or per user request |
| Insulation Level | 10kV: Power frequency withstand 35kV, Impulse 75kV 20kV: Power frequency withstand 50kV, Impulse 125kV 35kV: Power frequency withstand 70kV, Impulse 170kV |
| Execution Standards | GB1094, GB/T10228, IEC60076 or customized CSA,CE,UL |
| Normal Service Conditions | Altitude ≤1000m, ambient temperature ≤40°C, sinusoidal voltage waveform, approximately symmetrical three-phase supply. Special conditions (e.g., higher altitude or temperature) should be specified at inquiry. |
Packaging, Warranty & Certifications Packaging：
Products are carefully packaged in strong, export-compliant wooden crates with fumigation treatment for safe global shipping, including protective measures against moisture and mechanical damage during transport.
Warranty：
We offer a standard 12-18 months warranty (extendable up to 3-5 years depending on installation environment and contract terms) covering manufacturing defects under proper use and maintenance conditions. Full factory testing reports are provided with each unit.
Certifications & Testing：
Our dry type transformer fully complies with international and national standards including IEC60076 and GB1094/GB/T10228. Additional certifications such as ISO quality management systems are available, ensuring high reliability and market acceptance.
