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

Oil-immersed transformers (OITs) are widely recognized for their high power density, cost-effectiveness, and reliability in medium-to-large-scale power distribution systems. ​Zhengrui Electric​ has developed advanced oil-immersed transformer solutions tailored for standalone power stations—critical facilities such as utility substations, industrial plants, renewable energy hubs, and remote power generation sites.

Key Features:

  1. Working Principle: An oil-immersed transformer operates on the principle of electromagnetic induction, where electrical energy is converted from one voltage level to another. The core is made of high-quality magnetic material, and the windings are typically made of copper or aluminum. The entire internal structure is immersed in transformer oil, which acts as both insulation and cooling.

  2. Oil as Insulation and Cooling Medium: The transformer oil insulates the internal electrical components and prevents electrical breakdown. It also absorbs and dissipates the heat generated during operation, ensuring that the transformer stays within a safe temperature range.

  3. Sealed Structure: Oil-immersed transformers usually feature a sealed tank that prevents moisture or air from contaminating the oil. This helps maintain the insulating properties of the oil and prevents oxidation or degradation.

Oil Level Monitoring: These transformers are typically equipped with an oil-level indicator, making it easier to check the oil level and ensure that it is within the recommended range. Oil temperature indicators are also common to monitor the operational temperature.

Core Technology and Design Principles​

Zhengrui dry-type transformers utilize ​high-grade insulation materials​ (e.g., epoxy resin, fiberglass) to encapsulate windings, eliminating the need for liquid coolant. This design ensures ​zero fire risk​ and minimizes environmental contamination, making it ideal for indoor installations. Key technological features include:

  • ​High Energy Efficiency: Adoption of low-loss silicon steel core and optimized winding configurations reduces copper and iron losses, achieving energy efficiency ratings up to ​IE5​ (superior to industry standards).
  • ​Thermal Management: Forced-air or water-cooled systems enhance heat dissipation, ensuring stable operation even under peak loads.
  • ​Modular Design: Plug-and-play modules allow scalable capacity upgrades without disrupting existing infrastructure.

Applications in Independent Stations​

Independent stations—such as data centers, solar farms, and microgrids—demand transformers that combine reliability, compactness, and low maintenance. Zhengrui’s solutions address these needs through:

  • ​Data Centers: Silent operation (low noise levels ≤ 40 dB) and vibration-free design prevent interference with sensitive IT equipment.
  • ​Renewable Energy Facilities: Compatibility with inverters and DC-AC conversion systems in solar/wind farms ensures efficient power conditioning.
  • ​Critical Infrastructure: Fire-resistant properties meet NFPA 101 standards, protecting against electrical fires in buildings like hospitals or laboratories.

Intelligent Monitoring and Connectivity​

Modern independent stations require real-time data insights for predictive maintenance. Zhengrui transformers integrate ​IoT-enabled sensors​ to monitor parameters such as temperature, voltage, and load. Features include:

  • ​Remote Diagnostics: Cloud-based platforms provide actionable insights, reducing downtime through proactive issue resolution.
  • ​Automated Alerts: Early warnings for overheating or insulation degradation prevent catastrophic failures.
  • ​Energy Management Integration: Seamless compatibility with smart building systems optimizes energy consumption.

Environmental and Regulatory Compliance​

Zhengrui prioritizes sustainability in its designs:

  • ​Eco-Friendly Materials: Lead-free soldering and recyclable components minimize environmental impact.
  • ​Low Emission Operations: No coolant leaks or toxic gas emissions align with global regulations (e.g., EU RoHS, REACH).
  • ​Carbon Footprint Reduction: High efficiency contributes to lower energy waste, supporting net-zero goals.