Huajidian dry-type transformers are core products in the medium- and high-voltage power distribution field, emphasizing safety, reliability, outstanding energy efficiency, and ease of operation and maintenance. As a high-quality supplier from China, this series of epoxy resin cast dry type transformers (SCB series) covers voltage levels from 6 to 35 kV and capacities from 30 kVA to 25 MVA, fully complying with the IEC 60076 international standard.
Manufactured by a multi-certified factory, these products boast advantages such as fire resistance, low operating noise, and compact structure. They are widely used in high-rise buildings, industrial parks, data centers, and other scenarios, and have been deployed in batches in Southeast Asia, the Middle East, Africa, and other regions, providing stable power supply for various key infrastructure projects.
Compared to oil-immersed transformers, Huajidian dry type transformers use H-class (heat resistant to 180℃) epoxy resin as insulation material, containing no flammable liquids. The product features flame-retardant and self-extinguishing properties, releasing no toxic substances during combustion, meeting F1/C2/E2 fire safety standards, completely eliminating the risk of oil leaks and fires, making it particularly suitable for densely populated areas and locations with stringent fire safety requirements.
The product uses high-purity copper foil windings and a low-loss silicon steel core, meeting the national Class 1 energy efficiency standard (GB 20052-2020). Compared to traditional equipment, no-load loss is reduced by 20%, and load loss by 10%, effectively helping customers reduce long-term electricity costs.
The equipment adopts an integrated structure with a protection rating of IP20/IP23. Its overall size is 30% smaller than that of an oil-immersed transformer, allowing for installation near the load center and significantly saving space. Under rated operating conditions (1000 kVA, natural air cooling), the noise level is below 50 decibels within one meter, ensuring no noise interference in commercial or residential applications.
This product requires no replacement of insulating oil or oil level checks. The epoxy resin-cast windings are moisture-proof, dust-proof, and corrosion-resistant, enabling maintenance-free operation in environments with humidity ≤85%. The overall design lifespan exceeds 30 years, making it suitable for various complex operating environments.
| Parameter | Details |
|---|---|
| Model | SCB13 / SCB18 series (epoxy-cast, copper winding) |
| Voltage Level | 6 kV, 10 kV, 20 kV, 35 kV |
| Capacity | 30 kVA – 25 MVA |
| Insulation Grade | H (180°C) |
| Cooling Method | AN (natural air) / AF (forced air) |
| Connection Group | Dyn11 (harmonic suppression, standard) |
| Noise | ≤50 dB (1000 kVA, AN cooling) |
| Certification | IEC 60076, CE, IECEx, ISO 9001/14001 |
Project Background: This 500-acre integrated industrial park required 10kV/0.4kV transformers for its production workshops and public power distribution system. The project had strict requirements for the fire resistance rating of the equipment.
Solution: Huajidian provided 20 SCB18-2000kVA dry-type transformers, equipped with IP23 protection rating and a forced air cooling system. The equipment was installed in an indoor substation, saving 40% of the floor space compared to oil-immersed equipment.
Application Results: The equipment operated continuously and stably for 18 months with zero failures. The low-noise design fully complies with the factory's environmental regulations, and its excellent energy-saving performance reduces the park's electricity costs by approximately $120,000 annually.
A: Dry-type transformers use epoxy resin insulation and air cooling, eliminating the need for insulating oil. This results in better fire resistance, lower noise, and simpler daily maintenance. Oil-immersed transformers rely on insulating oil for insulation and heat dissipation, leading to lower procurement costs but posing a fire risk and requiring regular maintenance. Dry type transformers are the preferred choice for indoor locations and densely populated areas.
A: Our products hold international certifications such as IEC 60076 type test report, CE, IECEx, and ATEX. We can also assist customers with specific market certifications in countries such as Saudi Arabia (SABER) and Indonesia (SNI) to ensure product compliance with local standards.
A: All products come with a two-year warranty, and core spare parts are readily available in stock for quick replacement. A multilingual service team provides 24/7 technical support, including remote troubleshooting and on-site service when necessary. Equipment operation manuals are provided, and maintenance training can be conducted for partners.
Wenzhou Huajidian Technology Co., Ltd. is a professional exporter of medium and high voltage power distribution equipment. Leveraging the well-developed electrical industry cluster in Yueqing, Wenzhou, we offer a one-stop service from product selection, technical configuration, certification processing, quality control to international logistics.
Our dry type transformers, based on standardized production, rigorous three-stage quality control process (IQC, IPQC, and FAT), and a complete international certification system, are a trustworthy choice for power companies, EPC contractors, and industrial customers.
Power System 500kVA, 50Hz/60Hz, Three Phase
Certifications IEC 62271-200, IEC 694, GB3906, DIN VDE 0670
Power System 750kVA, 50Hz/60Hz, Three Phase
Certifications IEC 62271-200, IEC 694, GB3906, DIN VDE 0670
Power System 630kVA, 50Hz/60Hz, Three Phase
Certifications IEC 62271-200, IEC 694, GB3906, DIN VDE 0670
Power System 1000kVA, 11kV/0.4kV, 50Hz/60Hz
Certifications IEC 62271-200, IEC 694, GB3906, DIN VDE 0670
Power System 63kVA, 33kV/0.433kV, 50Hz/60Hz
Certifications IEC 62271-200, IEC 694, GB3906, DIN VDE 0670
Power System 250kVA, 13.8kV/0.4kV, 50Hz/60Hz
Certifications IEC 62271-200, IEC 694, GB3906, DIN VDE 0670
