40.5kV Heavy Current OIP Transformer Bushing

| Company Profile

Nanjing Rainbow Electric Co., Ltd. (NJREC) stands as a specialized manufacturer and global supplier of high-voltage electrical insulation solutions, focusing on the engineering and supply of transformer bushings and substation equipment. By prioritizing rigorous manufacturing standards and comprehensive supply chain management, the company ensures that every component facilitates safe and efficient power grid operations. With a deep commitment to infrastructure reliability, NJREC provides technical expertise and customized products for power utility projects, industrial power distribution, and heavy-duty electrical substations across international markets, emphasizing long-term operational success and asset protection.

| 40.5kV Heavy Current OIP Transformer Bushing Features and Insulation Technology

The 40.5kV heavy current Oil-Impregnated Paper (OIP) transformer bushing is engineered for high-demand power environments, integrating advanced insulation materials and refined production processes. The core utilizes high-purity electrical insulation paper wrapped around a central conductor, impregnated with high-grade transformer oil under vacuum conditions to achieve exceptional dielectric strength and minimize partial discharge levels. This sophisticated capacitor core design ensures uniform voltage distribution across the insulation structure, effectively mitigating the risk of breakdown during high-voltage surges or transient events.

To handle heavy current requirements, the conductive path is optimized for minimal contact resistance and superior thermal dissipation, maintaining low operating temperatures even under continuous full-load conditions. The bushing features a multi-stage sealing system composed of high-performance, weather-resistant materials to prevent oil seepage and moisture ingress, significantly enhancing the operational lifespan of the transformer. Whether integrated into traditional porcelain housings or modern composite insulators, the design offers superior resistance against environmental pollutants and extreme weather conditions, ensuring consistent performance in both indoor and outdoor utility installations.

Technical Specifications of 40.5kV Heavy Current OIP Transformer Bushing

| OIP Condenser Bushing Model Variations

OIP Condenser Bushing	40.5kV ~2000kV OIP Condenser Transformer/Reactor Bushing
	40.5kV ~800kV OIP Condenser Transformer/Reactor Bushing with composite envelope
	40.5kV ~252kV Oil-Oil OIP Condenser Transformer Bushing
	126kV ~550kV Oil-SF6 OIP Condenser Transformer Bushing
	24kV ~40.5kV Heavy Current OIP Transformer Bushing
	72.5kV ~800kV OIP Condenser Wall Bushing

| Custom Engineering and Design Support

| Manufacturing Quality and Facility Standards

At NJREC, the production of OIP condenser bushings follows an exacting quality control protocol that aligns with IEC60137 standards. Every unit undergoes comprehensive testing in our facility, including partial discharge measurements, dielectric loss testing, and lightning impulse withstand verification. This meticulous process ensures that every bushing delivered provides reliable, long-term performance within complex power systems. Our manufacturing environment is temperature and humidity controlled to preserve the integrity of the insulating paper and the precision of the capacitance core winding, resulting in a product that guarantees consistent structural stability and electrical performance.

| Global Deployment and Operational Reliability

The reliability of our OIP bushings has been proven through large-scale installations across North America, Australia, Southeast Asia, and various European utility sectors. By providing equipment that effectively handles diverse environmental stressors, we assist power grid operators in maintaining continuous, uninterrupted power supply. Our solutions are designed for seamless integration into existing transformer architectures, simplifying the maintenance and monitoring process via standardized oil-level indicators and intuitive installation designs.

| Standardized Packaging and Logistics

Recognizing the importance of transit safety for high-voltage bushings, we utilize specialized, shock-absorbent packaging that protects the structural and dielectric integrity of the equipment from the factory to the job site. Each consignment is documented to ensure traceability, allowing our clients to manage their procurement projects with complete visibility and confidence in delivery timelines.

| Industry Certifications and Compliance

Our commitment to professional excellence is evidenced by our adherence to international standards and continuous process improvement. By integrating design innovation with rigorous testing, NJREC maintains a leadership position in providing transformer insulation components that meet the stringent requirements of modern electrical infrastructure. Our dedicated service team works closely with procurement engineers to ensure that every technical and regulatory requirement is met, fostering long-term partnerships with esteemed clients across the utility sector.

| International Client Trust