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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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EngineeringShowcasing Yawei Electrical's successful applications across multiple sectors, including grid projects, industrial parks, photovoltaic power plants, and transportation infrastructure. Through tangible project outcomes, we highlight the equipment performance, engineering capabilities, and strength in delivering services to the global market.
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BlogsFocusing on company updates, product and technology upgrades, industry trends, and engineering insights. Providing timely updates on Yawei Electric’s global market strategy, innovation achievements, and project progress.
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Contact UsProviding multi-channel, highly responsive technical support and business consulting services. Whether it’s product selection, project planning, or after-sales support, we’ll deliver comprehensive assistance with a professional and efficient approach.
10kV, 20kV / S13, S20, S22 Oil-Immersed Distribution Transformers
Keywords:
10kV, 20kV / S13, S20, S22 Oil-Immersed Distribution Transformers
The S13, S20, and S22 series fully sealed oil-immersed transformers are designed for use in AC power systems with a frequency of 50 Hz and rated operating voltages of 20 kV or lower. They serve as distribution transformers in industries such as petroleum, metallurgy, chemical processing, textiles, and light manufacturing, as well as in environments with high dust levels.
Product Features
. Iron core
The core is made from high-permeability, grain-oriented cold-rolled silicon steel sheets. It features a modern core design—a fully sloped-joint, stacked-type core, with multi-level stepped circular cross-sections for the core columns and uniform cross-sections for both the yoke and the core itself.
· Winding
The windings feature corrugated oil channels and are assembled without varnish impregnation, secured tightly with compression bands. All windings consist of concentric coils. The high-voltage winding includes taps corresponding to the required tap voltages, which are connected to the tap changer mounted on the tank cover—note that the tap voltage can only be adjusted after the power supply has been disconnected.
·Safety Protection Device
Transformers ranging from 30 to 2000 kVA are equipped with pressure relief valves;
A gas relay with alarm and trip terminals can be installed according to user requirements; · Oil temperature measuring device
Transformers are all equipped with glass thermometer bushings, which are mounted at the top of the oil tank and extend 120 ± 10 mm into the oil.
Transformers ranging from 1000 to 2000 kVA are equipped with outdoor-type signal thermometers.
, transformer oil tank
The transformer oil tank features corrugated walls with a dust-coated surface.
The coating application ensures a durable, firmly adhered paint film. The corrugated heat sink not only provides cooling but also acts like a "breathing" mechanism—its elasticity compensates for changes in transformer oil volume caused by temperature fluctuations. As a result, fully sealed transformers eliminate the need for an oil conservator tank, significantly reducing the overall height of the transformer.
The transformer undergoes a vacuum oil-filling process during encapsulation, which completely removes moisture from inside the transformer and ensures that the transformer oil remains isolated from air. This effectively prevents oxygen and moisture from entering the transformer—conditions that could otherwise degrade the transformer's insulation performance and accelerate oil aging. As a result, routine oil sampling tests are not required on an ongoing basis.
Technical specifications
Technical Specifications for S13-M Type 10kV Class Oil-Immersed Three-Phase Dual-Winding Non-Excitation Voltage-Regulating Distribution Transformer
Technical Specifications for S20-M Type 10kV Class Oil-Immersed Three-Phase Dual-Winding Non-Excitation Voltage-Regulating Distribution Transformer
Technical Specifications for S22-M Type 10kV Class Oil-Immersed Three-Phase Dual-Winding Non-Excitation Voltage-Regulating Distribution Transformer
Technical Specifications for S13-M Type 20kV Class Oil-Immersed Three-Phase Dual-Winding Non-Excitation Voltage-Regulating Distribution Transformer
Technical Specifications for S20-M Type 20kV-Class Oil-Immersed Three-Phase Dual-Winding Non-Excitation Voltage-Regulating Distribution Transformer
Technical Specifications for S22-M Type 20kV Class Oil-Immersed Three-Phase Dual-Winding Non-Excitation Voltage-Regulating Distribution Transformer
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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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