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About UsJiangxi Yawei Electrical is dedicated to providing high-quality transformers and power distribution equipment for global energy infrastructure. Backed by a robust R&D system, a state-of-the-art intelligent manufacturing platform, and stringent quality management practices, we deliver reliable power solutions tailored for sectors such as power grids, industry, transportation, and new energy.
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ProductsA comprehensive product portfolio covering transformers, switchgear, packaged substations, and PV & energy storage distribution systems. Backed by customized design solutions, high-efficiency standards, and robust adaptability to international industrial conditions, we meet the specialized needs of diverse countries and projects.
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10kV Class SCB13, SCB14, SCB18 Epoxy Resin-Encapsulated Dry-Type Power Transformers
Keywords:
10kV Class SCB13, SCB14, SCB18 Epoxy Resin-Encapsulated Dry-Type Power Transformers
The 10kV-class SCB13, SCB14, and SCB18 epoxy-resin cast dry-type power transformers serve as advanced replacements for oil-immersed distribution transformers. They represent the highest-performing products among all dry-type transformers, making them ideal for critical applications such as urban power grids, high-rise buildings, business centers, theaters, hospitals, hotels, tunnels, subways, stations, ports, airports, underground power plants, laboratories, and prefabricated substations—ensuring reliable operation in even the most demanding environments.
Enclosure protection device
The enclosure is made from either stainless steel or aluminum alloy. It meets protection ratings of IP20 and IP23. The IP20-rated enclosure prevents solid objects larger than 12mm in diameter from entering, providing enhanced safety protection for the transformer. The IP23-rated enclosure additionally safeguards against water droplets falling at an angle of up to 60° from the vertical, making it suitable for outdoor operation.
Note: The IP23 enclosure reduces the transformer's cooling capacity—by approximately 5% for smaller capacities and about 10% for larger ones.
Product Features
Our factory produces SCB13, SCB14, and SCB18 10kV-class power transformers—low-noise, low-loss resin-encapsulated dry-type transformers that were among the first in China to receive product model certification. Thanks to advanced design, premium-quality materials, a scientifically optimized formulation, rigorous manufacturing processes, and stringent testing standards, these products boast the following key features:
· The high-voltage winding is wound with copper wire, while the low-voltage winding is wound with either copper wire or copper foil. Both windings are then filled and wrapped with glass fiber mats, after which they are cast under vacuum conditions using pure epoxy resin—without any additional fillers. Once cured, this process forms a robust, cylindrical monolithic structure characterized by high mechanical strength, minimal partial discharge, and exceptional reliability.
· Flame-retardant, explosion-proof, and environmentally friendly. Insulating materials like glass fibers used in winding coils have self-extinguishing properties, preventing arc formation even in the event of a short circuit, and the resin remains safe, emitting no toxic or harmful gases under high heat.
· The coil is non-hygroscopic, and the iron core clamps feature a special anti-corrosion protective layer, enabling operation in 100% relative humidity and other harsh environments. No dehumidification is required during intermittent operation.
· High short-circuit and lightning surge resistance
· The resin layers on both the inner and outer sides of the coil are thin, providing excellent heat dissipation. Cooling is typically achieved through natural air cooling (AN). For transformers of any protection class, an air-forced cooling system (AF) can be optionally installed to enhance short-term overload capacity and ensure safe operation.
· Low loss, excellent energy-saving performance, economical operation, and maintenance-free. · Compact size, lightweight design, minimal footprint, and low installation costs—eliminating the need to account for oil drainage systems, fire protection facilities, or backup power sources.
· Since there is no risk of fire or explosion, these can be installed in a distributed manner near load centers, bringing them close to the points of electricity usage—thereby reducing wiring costs and minimizing expenses associated with costly low-voltage equipment.
Temperature control, temperature display
The temperature control system consists of a temperature controller and a PTC temperature-sensing element installed at the hottest point of the product—specifically, the top end of the low-voltage winding. This setup enables precise measurement and control of the transformer's temperature. If the winding temperature rises excessively due to overload operation or a fault, the temperature controller will trigger an alarm signal; if the temperature exceeds safe limits, the system will automatically trip. In cases where forced air cooling is employed, the temperature controller determines whether to activate or switch the cooling fans based on the current winding temperature.
The temperature monitoring system directly displays the hot-spot temperatures of the transformer windings during operation and can be used in conjunction with a temperature control system.
The temperature control and temperature display systems can be installed at a certain distance from the transformer body, with lead lengths for their temperature-sensing elements as follows:
Temperature control: <20m / Temperature display: <10m (two-wire system) / <100m (two-wire system with compensation leads)
Technical specifications
SCB13 Epoxy Resin Cast Dry-Type Power Transformer Technical Specifications
SCB14 Epoxy Resin Cast Dry-Type Power Transformer Technical Specifications
SCB18 Epoxy Resin Cast Dry-Type Power Transformer Technical Specifications
Note: Dimensions are for reference only; please refer to the actual drawings and dimensions provided.
Product Inquiry
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Welcome to the official website of Jiangxi Yawei Electrical Co., Ltd.
If you're interested in our products and services, please don’t hesitate to contact us or leave us a message—we’ll be happy to assist you!
Company Address:
Chongren County, Fuzhou City, Jiangxi Province, Industrial Park (Yongkang Industrial Park)
Phone:+86-794-6372688/6372866
Email:tina@gxhgdl.com
WhatsApp: 8613321702397
Official website:www.cnywdq.com
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