S11-10kV 100kVA 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.

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.

Zhengrui Oil-Immersed Transformer: Delivering Resilient Power for Off-Grid and Standalone Stations​

In the evolving landscape of energy infrastructure, oil-immersed transformers (OITs) remain a cornerstone for high-capacity, reliable power distribution in off-grid and standalone applications. ​Zhengrui Electric​ has advanced its OIT technology to address the unique challenges of modern independent power stations—such as rural electrification, hybrid renewable projects, and critical facilities requiring uninterrupted.

Advanced Technological Features for Off-Grid Challenges​

Zhengrui OITs are engineered to thrive in isolated and resource-constrained environments:

• ​Off-Grid Voltage Stability: Incorporating ​​ tap-changing mechanisms, they maintain consistent output voltage even during fluctuations in input power from renewables like solar or wind.
• ​Low-Temperature Operation: Modified transformer oils and insulation materials enable reliable performance in sub-zero climates, critical for arctic research stations or mountainous regions.
• ​Portability and Lightweight Design: Compact, skid-mounted units simplify transportation and installation in remote areas with limited infrastructure.

 Synergy with Renewable Energy Systems​

Zhengrui’s OITs play a pivotal role in optimizing renewable energy integration:

• ​Solar PV Integration: High-voltage step-up transformers (up to 110 kV) efficiently convert DC power from solar arrays into grid-compatible AC.
• ​Wind Farm Compatibility: They handle variable-frequency inputs from turbines while minimizing harmonics distortion, ensuring stable grid connection.
• ​储能 System Integration: Combined with lithium-ion batteries, they balance intermittent generation and provide peak-load support, reducing curtailment of renewable energy.

 Enhanced Safety and Compliance​

• ​Fire Prevention: Double-wall oil tanks with automatic fire suppression systems meet international standards like ​IEC 60079-1​ for explosion-proof performance in hazardous environments.
• ​Leak Detection: Real-time monitoring systems detect oil leaks early, triggering alarms and automatic containment protocols to prevent environmental contamination.
• ​Eco-Compliant Design: Use of ​recyclable transformer oil​ and biodegradable materials reduces environmental footprint, aligning with EU regulations such as REACH.

Intelligent Operations and Maintenance​

Zhengrui OITs leverage ​AI-driven digital tools​ for streamlined management:

• ​Predictive Analytics: Machine learning algorithms analyze historical data to forecast failures, reducing unplanned downtime by 60%.
• ​Remote Telemetry: Operators can monitor real-time parameters (voltage, current, temperature) via cloud platforms and adjust operations remotely.
• ​Automated Lubrication: Smart systems schedule maintenance based on wear analysis, extending equipment lifespan.

 Cost-Effective and Scalable Solutions​

• ​Modular Expansion: Plug-and-play secondary windings allow incremental capacity upgrades without overhauling existing infrastructure, ideal for growing renewable projects.
• ​Reduced Operational Costs: Energy-efficient designs (up to 99% efficiency) and extended maintenance intervals (15–20 years) lower long-term expenses.
• ​Rapid Deployment: Pre-fabricated solutions enable 72-hour installation for emergency projects or temporary power needs.

 Unique Applications in Standalone Stations​

• ​Rural Electrification: Lightweight, cost-effective units power remote villages with minimal grid dependency.
• ​Military and Defense Facilities: Rugged designs withstand extreme weather, electromagnetic interference, and physical shocks.
• ​Offshore Platforms: Marine-grade enclosures resist saltwater corrosion and vibration, ensuring reliable operation in offshore wind farms.

Competitive Advantages Over Alternatives​While dry-type transformers are preferred in fire-prone indoor settings, Zhengrui OITs offer distinct benefits for standalone stations:

• ​Higher Power Density: Suitable for large-scale energy transmission where space is limited.
• ​Lower Total Cost of Ownership (TCO): Reduced material costs and simplified maintenance lower lifetime expenses.
• ​Unmatched Reliability: Proven track record in extreme environments and mission-critical applications.

Conclusion​

Zhengrui oil-immersed transformers are redefining the standards for standalone power stations through their adaptability to off-grid challenges, integration with renewables, and commitment to safety and sustainability. By combining cutting-edge technology with user-centric design, they empower operators to build resilient, cost-effective, and eco-friendly energy infrastructure. As the world transitions toward decentralized energy systems, Zhengrui’s OITs will remain a vital enabler of reliable power access for isolated and underserved regions.