JDC5-66

The JDC5-66 is a professional single-phase three-winding cascade insulation oil-immersed voltage transformer developed for 66kV, 50Hz AC power transmission and distribution systems. Manufactured in strict accordance with IEC 60044-2 and GB 1207 international standards, this outdoor potential transformer is specially designed for neutral non-effective grounding power grids, widely used in power substations, industrial power distribution systems and overhead line projects for precise voltage monitoring, electric energy metering and reliable relay protection.
Adopting mature oil-immersed insulation technology and high-purity insulating mineral oil, the JDC5-66 voltage transformer features excellent dielectric insulation and heat dissipation performance. The internal high-quality silicon steel sheet iron core ensures low magnetic loss, stable transformation ratio and high measurement accuracy up to 0.2S level. It effectively eliminates voltage fluctuation errors, guarantees accurate metering data and stable protection action, avoiding power system misoperation.
Built with a fully sealed integrated structure and equipped with a metal expander on the top, the JDC5-66 transformer completely prevents internal oil leakage, moisture ingress and dust pollution. The high-strength porcelain bushing undergoes anti-pollution, anti-corrosion and weatherproof treatment, meeting Class II anti-fouling grade standards. It adapts to harsh outdoor environments such as high altitude, low temperature, coastal salt fog and industrial pollution, realizing long-term stable all-weather operation.
With optimized cascade insulation structure and reasonable internal winding layout, this 66kV high voltage transformer boasts strong overload capacity, low operating noise and excellent excitation characteristics. The standardized voltage ratio ensures stable and consistent operational performance. The whole equipment requires almost no daily maintenance, greatly reducing later operation and maintenance costs for power grid projects and improving overall power system operational efficiency.
As essential core supporting equipment for 66kV medium and high voltage power grid construction and renovation, the JDC5-66 outdoor oil immersed voltage transformer is highly recognized for its high precision, strong environmental adaptability and superior stability. We provide global customers with factory direct sales, customized technical solutions, complete certification documents and professional one-stop after-sales service for various power engineering projects.