Kechang Electric's oil immersed transformers lead the industry's energy efficiency upgrade with excellent  

Baoding, Hebei, October 20, 2025 - In the context of global energy transformation and energy efficiency improvement, Kechang Electric Co., Ltd. is bringing revolutionary energy efficiency breakthroughs to the power industry with its advanced oil-immersed transformer product series. The newly launched S22 series oil-immersed transformers have demonstrated excellent energy-saving performance, reliable operation stability and environmental protection characteristics, and have become the new focus of the Chinese market.

Energy efficiency performance is industry leading, energy saving benefits are significant

Kechang Electric oil-immersed transformers reach the top level in the industry in terms of energy efficiency. Taking a 10 kV/1000 kVA transformer as an example, the S22 series has a no-load loss of only 665 W and a load loss as low as 7415 W, far exceeding the requirements of world-class energy efficiency standards. Actual data shows that compared to the traditional S13 series transformers, the S22 series can save 23,080 kWh of electricity in 8,000 hours of operation per year, which can save a lot of electricity bills.

According to the chief engineer of Kechang Electric Technology, "Our transformers use high magnetic permeability silicon steel sheet and optimized iron core laminating process, which reduces the no-load loss by more than 30% on average compared to S11 type products, and the products cover 30-2500 KVA capacity range, meeting the needs of different application scenarios."

Innovative technologies for superior reliability

Structural design is strong and durable

Product passed China GB/T1094.5 short circuit test verification, strong resistance to short circuit. Iron core and winding fixed by oil immersion, high mechanical strength, design life of more than 30 years, far exceeding the average of 20-25 years of its peers. The structure of the fully sealed corrugated sheet fuel tank is not only beautiful, but also has excellent moisture-proof, dust-proof and corrosion-proof properties.

Advanced technology for noise control

Using laser processing technology, the core burr is controlled within 0.03 mm, combined with the five-step lamination process, making the product noise 20% lower than the current international standard JB/T10088-2004 average. The noise of the 20000kVA transformer was only 52dB(A) during the test, which is especially suitable for noise-sensitive areas such as residential areas and hospitals.

Environmental safety features stand out

The transformer uses high quality insulating oil with ignition point ≥140℃, equipped with pressure release valve (opening pressure 35 kPa) to achieve directional injection, ensuring safe operation. The fully sealed structure makes the oil age slowly, and the silicone replacement cycle of the hygroscope is up to more than 5 years, which greatly reduces the maintenance cost. Transformer oil is recyclable and has a significantly lower carbon footprint than dry-type transformers.

Authoritative certification guarantees quality

Kechang Electric's oil-immersed transformers have passed the comprehensive type test of China's National Electrical Product Quality Inspection and Testing Center, and models including SZ22-20000/35-NX1 have reached the first-level energy efficiency standard. The company has 56 national patents and has passed ISO9001 quality management system, ISO14001 environmental management system and other certifications to ensure the stability and reliability of product quality.

At present, Kechang Electric oil-immersed transformers have been widely used in key projects such as State Grid transformation, petrochemical industry, metallurgy and mining, and have been highly recognized by the market for their excellent durability and stability. As global energy efficiency requirements continue to improve, Kechang Electric will continue to work on technological innovation to provide customers with better quality and more efficient power equipment solutions.

About Ke Chang Electric:

Kechang Electric Co, Ltd is a high-tech enterprise specializing in manufacturing durable electrical equipment, integrating scientific research, design, production, sales and technical services, its products cover a full range of power equipment such as oil-immersed transformers, dry-type transformers, high and low voltage switch cabinets, etc.