Quality standards of product

 

  
1.Quality management system GB/T 19001-2016 ISO 9001: 2015

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.

Products Description

Zhengrui Oil-Immersed Transformer: A Comprehensive Overview

Zhengrui Oil-Immersion Transformers (OITs) are cutting-edge power distribution solutions designed to meet the growing energy demands of modern industries, commercial complexes, and renewable energy systems. These robust devices combine advanced engineering with energy-efficient technology to deliver reliable performance under diverse operational conditions.

 

​Key Technical Advancements

Zhengrui OITs feature a meticulously engineered core and winding design optimized for minimal energy loss. Utilizing high-grade silicon steel laminations, the core reduces magnetic flux leakage, ensuring efficiency ratings exceeding industry standards. The windings are crafted from vacuum-pressure-treated copper conductors, which enhance conductivity and thermal stability. This combination minimizes copper losses and extends the transformer’s lifespan.

Its cooling system adopts a hybrid mode: relying on natural oil circulation for heat dissipation at room temperature, and switching to forced oil circulation (equipped with directional fans) during peak loads. This dual-mode operation takes into account both energy efficiency and heat dissipation efficiency, and performs particularly well in high-load scenarios. In addition, the transformer uses 220kV-class insulating materials to ensure safe operation in extreme environments.

​Sustainable and Eco-Friendly Design

Zhengrui prioritizes sustainability by using non-toxic, biodegradable insulating fluids that comply with international environmental regulations. These fluids not only reduce fire risks but also minimize environmental contamination in case of leaks. The transformer enclosures are constructed from recycled steel and corrosion-resistant alloys, further reducing the carbon footprint.

Energy efficiency is a cornerstone of Zhengrui’s design philosophy. Compliance with international standards such as IEC 60076 and EN 50156 ensures that these transformers achieve up to 98% efficiency, significantly lowering operational costs for end-users. For instance, a 1000kVA unit can save approximately 15,000 kWh annually compared to conventional models.

​Adaptability to Renewable Energy Systems

With the global energy transition, Zhengrui OIT is specifically optimized and designed for photovoltaic power plants, wind farms, and energy storage systems. Its wide voltage range (10kV–35kV) and the capability of supporting bidirectional power flow make it suitable for both grid-connected and off-grid scenarios, enabling efficient energy storage and power allocation.

​Smart Monitoring and Maintenance

Zhengrui incorporates IoT-enabled sensors and cloud-based analytics to provide real-time monitoring of critical parameters such as temperature, oil level, and vibration. This predictive maintenance capability allows operators to detect anomalies early, reducing downtime and extending service life. Users can access detailed insights via a user-friendly mobile app or web portal, streamlining operations and minimizing maintenance costs.

​Applications Across Industries

Zhengrui OITs cater to a broad spectrum of sectors:

  • ​Industrial Manufacturing: Powers heavy machinery and high-voltage equipment in factories.
  • ​Commercial Buildings: Ensures stable power supply for data centers, hospitals, and skyscrapers.
  • ​Renewable Energy: Supports solar parks, wind farms, and energy storage systems.
  • ​Infrastructure Projects: Used in substations and transportation networks for reliable power distribution.

​Quality Assurance and Compliance

Each transformer undergoes rigorous testing at Zhengrui’s state-of-the-art facilities, including withstand voltage tests, load tests, and environmental simulations. The products comply with global certifications such as CE, UL, and CCC, ensuring compliance with regional safety standards.

​Why Choose Zhengrui?

Beyond technical superiority, Zhengrui OITs offer competitive pricing, flexible customization options, and a 25-year warranty. The company provides end-to-end support, from design consultation to installation and maintenance, empowering customers to optimize their energy infrastructure.

Conclusion

Zhengrui Oil-Immersion Transformers represent a paradigm shift in power distribution technology, combining efficiency, reliability, and sustainability to address the challenges of tomorrow’s energy landscape. Whether for legacy systems or next-generation renewable projects, these transformers deliver unmatched performance and value.