As a professional manufacturer of power transformers, Jiangsu Hualai Electrical Technology Co., Ltd. is committed to providing high-quality, durable oil-immersed transformers for global customers. Our oil-immersed transformers are designed with advanced technology and strict quality control, making them the preferred choice for medium and high-voltage power transmission and distribution systems worldwide.
Our oil-immersed transformers feature a core structure made of high-quality cold-rolled grain-oriented (CRGO) silicon steel, which effectively reduces core losses and improves energy efficiency, helping customers lower long-term operational costs. The windings are submerged in high-performance insulating mineral oil, which serves dual functions of electrical insulation and heat dissipation, ensuring stable operation even under high voltage and heavy load conditions. We offer two main cooling methods: ONAN (Oil Natural Air Natural) for smaller units and ONAF (Oil Natural Air Forced) for high-capacity transformers, adapting to different application scenarios flexibly.
With superior overload capacity, excellent heat dissipation performance, and a service life of 20-30+ years, our oil-immersed transformers are widely used in industrial plants, power substations, renewable energy farms (wind and solar), and large-scale power distribution networks. We strictly follow international standards in production and can provide customized solutions according to customer requirements, including voltage, capacity, and special environmental adaptations (such as high temperature, high humidity, and salt spray resistance).
Jiangsu Hualai has rich experience in manufacturing and exporting oil-immersed transformers, with products compliant with IEC, CE, and other international certifications. We have established a complete quality inspection system to ensure each product meets the highest standards before leaving the factory. Whether you need a standard model or a customized solution, we are here to provide you with professional support and reliable products.
Contact Jiangsu Hualai Electrical Technology Co., Ltd. today to get your tailored oil-immersed transformer solution!
