In modern power systems, dry-type transformers are increasingly replacing traditional oil-immersed transformers due to their safety, environmental friendliness, and high efficiency. As someone who has long focused on power equipment, I hope this article – through real-world application scenarios – will help you better understand the value of dry-type transformers and the reliable solutions provided by Xinhong Electrical in this field.
Simply put, a dry-type transformer is one whose core and windings are not immersed in insulating oil. Its cooling methods are mainly natural air (AN) or forced air (AF). With no risk of oil leakage, dry-type transformers offer inherent advantages in fire safety, environmental protection, and ease of installation. Common types include epoxy resin cast and impregnated varieties.
Places with high occupancy – shopping malls, hospitals, schools, hotels, office towers – demand strict fire safety. Conventional oil-filled transformers may cause fire or even explosion in case of failure. Dry-type transformers use flame-retardant insulating materials with self-extinguishing properties, producing no open flame even under overload or short-circuit conditions.
Xinhong Electrical's SCB series dry-type transformers for building power distribution feature low noise and low losses, fully compliant with GB/T 10228, and have been successfully deployed in multiple landmark buildings across cities.
UPS systems and server racks in data centers require extremely high power reliability. Dry-type transformers effectively suppress harmonics, stabilize voltage, and can be installed indoors alongside switchgear. Their maintenance-free design significantly reduces operating costs.
In space-constrained environments like 5G base stations and edge data centers, Xinhong Electrical offers compact, high-efficiency dry-type transformers that operate in a wide temperature range from -25°C to +50°C, with protection ratings up to IP30 to resist dust and moisture.
Wind and photovoltaic (PV) power systems are often located outdoors or offshore in harsh environments. Dry-type transformers can be installed directly inside towers or prefabricated substations without the need for oil containment pits or firewalls. They are especially popular in compact substations (American/Euro type) due to their light weight and excellent seismic performance.
Xinhong Electrical provided 35kV dry-type transformers for a 10MW PV plant. Using vacuum pressure casting technology, partial discharge is kept below 5pC, ensuring long-term stable operation even in high-temperature, high-humidity conditions.
Subway stations and railway traction power supply systems impose extremely strict requirements on equipment footprint and fire ratings. Dry-type transformers can be installed in tunnel wall‑mounted enclosures or equipment floors, eliminating the risk of oil leakage contaminating underground environments. Additionally, their high overload capacity handles transient high currents during peak commuting hours.
Xinhong Electrical has established long‑term partnerships with multiple rail transit construction companies. Our dry-type transformers comply with EN 50216‑2 and IEC 60076‑11 international standards, and come standard with 150°C temperature controllers and fans for unattended monitoring.
Factories in chemical, textile, metallurgical, and mining industries may have dust, corrosive gases, or explosive risks. While dry-type transformers cannot fully replace explosion-proof transformers, they perform reliably in Zone 2 or non-extreme hazardous areas when equipped with IP54 protective enclosures. Their oil-free construction also reduces routine inspection workloads.
Xinhong Electrical has developed multi-tap dry-type transformers (±5% or ±10% voltage adjustment) tailored to industrial sites with frequent voltage fluctuations, effectively extending load equipment life.
Process Excellence: German HEDRICH vacuum casting equipment ensures bubble‑free, crack‑free coils with dielectric strength up to 3kV/mm.
Leading Energy Efficiency: Full series meets national Tier 1/Tier 2 efficiency standards (e.g., SCB18, SCB14,SCB10,SCB12,SCB13). No‑load losses are more than 15% lower than national standards.
Customization Flexibility: Available in aluminum or copper windings, different protection ratings (IP00 to IP65), and various input/output configurations to meet special installation needs.
Global Certifications: CE, CSA, SABS certified, with exports to Southeast Asia, Africa, South America, and beyond.
From busy city office towers to remote photovoltaic plants, dry-type transformers are redefining the reliability and safety of power distribution. If you are looking for a high‑quality dry-type transformer that balances performance, longevity, and environmental responsibility, Xinhong Electrical offers over 20 years of R&D experience and a comprehensive after‑sales service network.
Visit our official Google-indexed website for detailed technical specifications or to request sample testing. Choose Xinhong Electrical – let every kilowatt‑hour reach where it’s needed safely and efficiently.
