The global power transformer market is witnessing a paradigm shift driven by the "Electrification of Everything." As nations upgrade aging grids and integrate renewable energy sources, the demand for oil-immersed transformers—known for their superior cooling and longevity—is projected to grow at a CAGR of 6.5%. Henan Pirooz Power Co., Ltd. sits at the heart of this expansion, bridging the gap between traditional reliability and modern efficiency.
In the transition toward sustainable energy, oil-immersed transformers serve as the critical nodes in wind and solar farm substations. Our S20 and S22 series are specifically engineered to handle the harmonic fluctuations and intermittent loads characteristic of renewable power generation, ensuring a stable "Green Grid" for the future.
The industry is moving toward Smart Transformers. We are integrating IoT-based monitoring systems that track oil temperature, dissolved gas levels, and load performance in real-time. This predictive maintenance approach reduces unplanned downtime by 40% and extends the operational lifespan of the equipment beyond 30 years.
Henan Pirooz Power Co., Ltd. is a comprehensive electrical power equipment manufacturer integrating research and development, engineering design, production, sales, and after-sales service. The company specializes in customized solutions for power transformers and complete sets of transmission and distribution equipment, providing reliable and efficient electrical products for global energy infrastructure projects.
The company operates a modern manufacturing facility with a complete production system covering product design, precision machining, assembly, and full electrical testing. Equipped with advanced production lines and strict quality control procedures, Henan Pirooz Power Co., Ltd. ensures that all products meet international standards and customer-specific technical requirements, maintaining high performance, safety, and durability.













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Tailored power solutions for complex environments
Designed to withstand harsh environments with high dust and vibration. Our transformers provide stable power for heavy machinery, smelting furnaces, and deep-well pumps, featuring enhanced sealing and cooling.
Corrosion-resistant finishes and high-temperature insulation materials ensure safety in hazardous zones. These units meet strict explosion-proof and moisture-proof standards.
Low-noise, compact designs ideal for residential substations, subways, and high-rise commercial buildings. Our hermetically sealed units require zero maintenance in dense urban settings.
Step-up transformers specifically built for wind turbine nacelles or solar inverter stations, optimized for variable load profiles and high efficiency.
As a leading OEM Oil Immersed Transformer Manufacturer, Henan Pirooz Power Co., Ltd. understands that a one-size-fits-all approach is insufficient for modern power grids. Every installation site has unique challenges, from extreme ambient temperatures to specific space constraints.
Our OEM process begins with "Search Intent Mining" for our clients' engineering needs. We don't just supply hardware; we provide a technical roadmap. Whether you need a specific voltage ratio for a legacy grid in Southeast Asia or a high-altitude resistant transformer for a plateau project in South America, our R&D team utilizes advanced simulation software to model electromagnetic fields and thermal distribution before a single sheet of silicon steel is cut.
Information Gain in Transformer Design: Unlike generic suppliers, we provide detailed loss-calculation reports and "Total Cost of Ownership" (TCO) analysis. By optimizing the core-to-coil ratio, we can reduce no-load losses by up to 15% compared to standard models, translating to thousands of dollars in energy savings over the unit's lifecycle.
Our supply chain agility allows us to offer short lead times for custom-ordered S11 and S13 units, ensuring your infrastructure project remains on schedule. From 50kVA distribution units to 5000kVA power behemoths, our factory is equipped with the precision machinery—including laser cutting and robotic welding—necessary to maintain micron-level tolerances.
A: Oil-immersed transformers offer superior cooling efficiency through natural convection (ONAN) or forced cooling (ONAF). They typically have a higher overload capacity, better dielectric strength, and a longer lifespan in outdoor environments. Furthermore, they are generally more cost-effective for high-voltage applications above 35kV.
A: We utilize hermetically sealed corrugated tanks that eliminate the need for an oil conservator, preventing oil contact with air and moisture. This reduces oxidation and eliminates the risk of leaks. For eco-sensitive areas, we offer units filled with biodegradable vegetable-based ester oils.
A: All our products are designed and tested in accordance with IEC 60076 standards. We also hold ISO 9001, CE, and various regional certifications required for power grid entry in Europe, Africa, and the Americas.
A: Yes. Our engineering team can customize the short-circuit impedance and specific load/no-load loss values to match your system’s protection coordination and efficiency targets.
Looking ahead, Henan Pirooz Power Co., Ltd. is committed to innovation, energy efficiency, and smart manufacturing development. By continuously improving product performance and system integration capabilities, we aim to become a globally recognized provider of advanced power equipment solutions. Our roadmap includes the integration of graphene-enhanced cooling fluids and AI-driven load management systems to support the development of modern and sustainable energy infrastructure worldwide.