S11-10kV 1600kVA oil immersed transformer

The operation of the whole ZHENGRUI system is strictly controlled and managed. This ensures the quality of products and material in all stages, from receiving customer requests to design, materials, production, installation, testing, packaging, delivery, after-sales, all of which operate under strict and logically linked processes.

2.Accreditation certificate CE

LOW VOLTAGE DIRECTIVE,ELECTROMAGNETIC COMPATIBILITY DIRECTIVE ATTESTATION OF CONFORMITY
GENERAL PRODUCT SAFETY REGULATION ATTESTATION OF CONFORMITY

confirms that ZHENGRUI technical quality meets the requirements of all specific international standards for testing and calibration laboratories. All ZHENGRUI products are fully tested in a qualified testing room before leaving the factory, ensuring stable quality and providing absolute peace of mind for customers.

Zhengrui Oil-Immersed Transformer: Pioneering Innovation for Modern Power Infrastructure

Zhengrui Oil-Immersed Transformers (OITs) are at the forefront of power distribution technology, delivering unparalleled performance for mission-critical applications. Engineered to address the evolving demands of industries, smart grids, and sustainable energy systems, these transformers combine advanced materials, intelligent features, and energy-efficient design to ensure reliability, cost-effectiveness, and environmental compliance.

Advanced Core and Winding Technology

Zhengrui’s OITs utilize a proprietary core design that minimizes energy loss through reduced magnetic flux leakage. The cores are manufactured using high-grade, non-oriented silicon steel laminations, which are laser-cut to precision tolerances, ensuring minimal eddy current losses. The windings are crafted from vacuum-pressure-treated copper alloys, enhancing conductivity and thermal stability. This combination achieves an ultra-low no-load loss rate, making the transformers ideal for high-frequency switching environments such as data centers and electric vehicle charging stations.

​Innovative Cooling Solutions

The hybrid cooling system in Zhengrui OITs integrates both natural convection and forced oil-air cooling, tailored to dynamic load conditions. For baseline operations, the transformer relies on ambient oil circulation, reducing energy consumption during low-demand periods. Under peak loads, smart thermostatic controls activate axial fans that direct airflow precisely over critical hotspots, optimizing散热效率 while avoiding unnecessary energy use. This dual-mode approach ensures a 15% reduction in cooling-related power consumption compared to conventional systems.

​Eco-Compliant Fluids and Materials

Zhengrui prioritizes environmental responsibility by adopting bio-based insulating fluids with zero halogen content. These fluids not only meet international fire safety standards (e.g., UL 94 V-0) but also decompose naturally in soil, minimizing ecological impact. The transformer enclosures are constructed from 100% recycled steel and corrosion-resistant coatings, reducing carbon emissions by up to 30% during manufacturing. Additionally, the design eliminates polychlorinated biphenyls (PCBs), aligning with global regulations such as REACH and RoHS.

​Integration with Renewable Energy Systems

Zhengrui OITs are optimized for grid-tied and off-grid renewable energy applications. They support bidirectional power flow, enabling efficient energy storage management for solar PV and wind farms. The transformers operate seamlessly within a wide input voltage range (8kV–50kV) and feature a high fault withstand capacity, making them suitable for rural electrification projects and isolated grids. For instance, in solar farms, they help stabilize power output fluctuations and extend the lifespan of inverters by mitigating voltage surges.

​AI-Driven Condition Monitoring

Each Zhengrue OIT is equipped with an IoT-enabled monitoring system that leverages machine learning algorithms to predict potential failures. Sensors track parameters such as oil temperature, dissolved gas analysis (DGA), and acoustic emissions, providing real-time insights into transformer health. The cloud-based platform generates automated maintenance recommendations, reducing downtime by 40% and extending the equipment’s service life by 10–15 years. Users can access predictive analytics via a secure mobile interface, enabling proactive decision-making.

​Customizable and Scalable Solutions

Zhengrui offers a modular design approach, allowing customers to configure transformers based on specific requirements. Units can be combined in parallel to meet higher power demands, and optional accessories such as phase-shifting reactors or harmonic filters can be integrated to address power quality issues. This flexibility supports a broad range of applications, from small-scale commercial buildings to large industrial complexes.

​Global Compliance and Certification

All products undergo rigorous testing at ISO 17025-certified facilities, ensuring compliance with international standards including IEC 60076-1, IEEE Std 115, and GB/T 1094. Zhengrui holds certifications such as CE, UL, and KEMA, facilitating market entry in regions like Europe, North America, and Southeast Asia.

​Why Zhengrui Stands Out

Beyond technical excellence, Zhengrui delivers competitive pricing, a 10-year warranty, and 24/7 global technical support. The company partners with local distributors to provide fast turnaround times and customized after-sales services, making it a preferred choice for utilities, engineers, and EPC contractors worldwide.

Conclusion​

Zhengrui Oil-Immersed Transformers redefine power distribution through their blend of innovation, sustainability, and adaptability. Whether powering tomorrow’s smart cities or today’s critical infrastructure, these transformers deliver unmatched performance and value in an era of energy transformation.