Dry Type Transformer Overview
SNTOOM/Shuntong Electric designs and builds oil‑free Dry Type Transformer solutions for safe, reliable power distribution. Based in Liushi, Wenzhou, our in‑house team integrates R&D, manufacturing, and service for MV distribution up to 35 kV. Expect low loss performance, stable operation, and simplified upkeep across utilities, industry, and commercial projects. Explore related oil‑immersed and special units in the broader SNTOOM transformers portfolio.
Features and Advantages of Dry‑Type Transformers
Resin‑insulated windings eliminate oil, improving fire safety and environmental protection. Encapsulation resists moisture, allowing indoor placement near loads and quick restart after downtime. Low noise designs suit hospitals, offices, and public spaces. Natural air cooling is standard; forced air can support application‑dependent overloads up to 120%. Integrated temperature monitoring and robust construction enhance short‑circuit withstand and extend service life.
Types and Cooling Options
Two main constructions cover most needs: SCB11 cast resin for mainstream distribution, and STDC epoxy‑potted for heightened sealing in humid or dusty sites. Enclosures can be configured for indoor rooms or outdoor‑ready protection with appropriate ventilation. Off‑circuit tap settings are standard. When voltage stability under varying load is essential, on‑load regulation can be provided by application.
SCB11 Cast Resin Dry Type Transformers
SCB11 units balance efficiency and acoustics with low loss cores and resin‑encapsulated windings. They serve campuses, commercial buildings, and general industrial loads.
STDC Epoxy‑Potted Dry‑Type Transformers
STDC designs provide strong sealing for coastal, tunnel, or basement environments. Thermal design supports consistent heat dissipation and reliable long‑term operation.
Applications of Dry‑Type Transformers
Use cases include distribution substations, rail and metro stations, tunnels, hospitals, data centers, schools, and high‑rise complexes. Industrial applications span manufacturing lines, HVAC systems, and motor groups where low maintenance and safety are priorities.
Selection Guide for Dry Type Transformers
| Factor | Define for Your Project |
|---|
| Electrical | kVA, primary/secondary voltages, frequency, impedance, vector group, tap range |
| Duty & Cooling | Load profile, AN or AF, overload needs, temperature rise class |
| Environment | Ambient, altitude, humidity, indoor/outdoor, enclosure/IP, ventilation |
| Performance | Efficiency targets, partial discharge limits, noise level |
| Docs & Tests | GB/T alignment; IEC 60076 upon request; reports and inspection plans |
Quality and Project Support
Located in China’s Electric Capital, SNTOOM controls core cutting, winding, and assembly in‑house. Products align with national GB/T standards, with IEC 60076 available upon request. We support projects with documentation, technical exchanges, and factory acceptance testing. Warranty covers one year with free maintenance for quality issues, followed by lifetime paid service and guidance. Typical response times are one hour for inquiries and 12–72 hours for on‑site service, depending on location.
Request a Quote for Dry Type Transformers
As a Dry Type Transformer manufacturer and supplier, we provide application engineering, customization, and responsive after‑sales service. Share kVA, voltages, frequency, vector group, efficiency targets, temperature rise, impedance, installation environment, enclosure/IP, noise limits, and AN/AF preference. Our team will recommend the right construction, deliver drawings and pricing, and help schedule delivery.
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