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11KV Oil Immersed Transformer

11kV oil immersed transformer with high mechanical strength, efficient cooling, and reliable performance. OEM and global delivery available.

Description

As a professional 11kV Oil Immersed Transformer supplier, we provide medium voltage transformers for industrial, utility, and EPC projects. Our transformers ensure stable operation, efficient cooling, and long service life.

High-Reliability 11kV Oil Immersed Transformer Solutions

11kV oil immersed distribution transformer unit, designed for industrial and utility power applications.
High-quality 11kV oil immersed transformer for stable power distribution and industrial use.

Engineered for demanding industrial and commercial environments, our 11kV Oil Immersed Transformer delivers unmatched reliability and efficiency for power distribution in factories, commercial complexes, and critical utility networks. Designed as a high-performance industrial transformer, it features high-conductivity copper windings and a grain-oriented silicon steel core, combining premium materials to maximize energy efficiency, minimize electrical losses, and reduce operational costs.

Durability is built into every unit. The transformer includes advanced insulation systems and sealed tanks that maintain consistent performance under sustained peak loads and extreme conditions. Its robust, corrosion-resistant enclosure protects against harsh environmental factors such as coastal salt air, high humidity, and wide temperature variations, ensuring long-term stability and dependable operation.

In addition to reliability and efficiency, this high-voltage transformer is designed for low maintenance and extended service life, helping you achieve a lower Total Cost of Ownership over its operational lifespan. With superior thermal management, vibration resistance, and optimized cooling channels, the transformer maintains stable voltage regulation and prevents overheating, ensuring a safe and continuous power supply to your critical operations.

Whether used for industrial power distribution, utility networks, or commercial energy systems, our 11kV Oil Immersed Transformer combines cutting-edge materials, innovative design, and proven manufacturing practices to deliver consistent performance, reduced downtime, and long-term operational savings.

Why Partner with Solarasia for 11kV Power Distribution?

Six key advantages of 11kV oil immersed transformers: premium materials, impeccable craftsmanship, professional customization, meticulous quality, reinforced durability, and long-lasting performance.
Discover why our 11kV transformers outperform competitors with superior materials and craftsmanship.

Designed for industrial and utility leaders, our 11kV oil-immersed transformers deliver uncompromising reliability for your most critical operations. Discover the six engineering pillars that make us your trusted power partner:

  1. Premium Materials: Featuring high-conductivity copper windings and grain-oriented silicon steel cores, we ensure maximum efficiency, minimal energy loss, and unwavering long-term stability.

  2. Precision Craftsmanship: Each unit receives expert assembly in our advanced facilities, guaranteeing optimal electromagnetic performance and decades of reliable service through meticulous attention to detail.

  3. Customized Solutions: We provide tailored ODM/OEM configurations, adapting voltage ratings, cooling methods (ONAN/ONAF), and installation designs to perfectly match your specific operational requirements.

  4. Verified Quality: Every transformer undergoes comprehensive testing in compliance with IEC and IEEE standards, certifying superior safety, performance, and reliability through rigorous quality verification.

  5. Reinforced Construction: Engineered with corrosion-resistant tanks and robust structural designs, our transformers withstand harsh environments, seismic activity, and continuous heavy loads.

  6. Optimized Lifetime Value: By combining high energy efficiency with ultra-durable components, we significantly reduce operating costs and maintenance needs, delivering exceptional long-term ROI and lower total cost of ownership.

Versatile Applications: From Industrial Grids to Solar PV Plants

The 11kV oil immersed transformer is a reliable and cost-effective solution for medium voltage power distribution projects. Designed for stable operation, efficient cooling, and long service life, it is widely applied across various utility, industrial, and infrastructure scenarios, including:

Power grid renovation and upgrade projects
Ideal for replacing aging transformers in existing substations, the 11kV oil immersed transformer ensures accurate voltage regulation, reduced power losses, and improved grid stability. Its robust insulation system supports continuous operation under fluctuating load conditions, making it suitable for grid modernization initiatives.

Ring main unit (RMU) and distribution network construction
Commonly used in ring network systems, this transformer enables flexible power distribution and enhances supply reliability. It supports load transfer and fault isolation, helping utilities maintain uninterrupted power supply in urban and suburban distribution networks.

Transformer substations and distribution stations
With excellent oil-based cooling performance, the transformer efficiently dissipates heat during long-term operation. This makes it well suited for indoor or outdoor transformer substations, ensuring consistent performance, extended service life, and reduced maintenance requirements.

Industrial and commercial power distribution
Widely applied in manufacturing plants, mining facilities, and heavy industrial sites, the 11kV oil immersed transformer provides safe, stable, and continuous power for high-demand equipment. Its strong overload capability and high insulation reliability support harsh operating environments and critical industrial processes.

11kV Oil Immersed Transformer Technical Specs & Price Guide

Rated Capacity (kVA)Rated Voltage (kV)Loss (W)On Load Current (A)Total Weight (kg)Dimension (L*W*H) mm
H.V.L.V.No LoadOn Load
306 / 6.3 / 10 / 110.4 / 0.4151006002.1305750*500*990
501308702.0405800*480*1030
10020015001.8530890*645*1145
25040030501.410201285*730*1290
50068051001.216451365*765*1540
80098075001.024551640*930*1590
10001150103001.028001860*1120*1630
16001640145000.841751975*1175*1900

Technical specification table for 11kV oil immersed transformers showing voltage ratings, capacity, dimensions, and performance data.
Detailed specifications for our 11kV oil immersed transformer series.

Core Component Analysis: Premium Materials for 11kV Units

Advanced radiator and heat sink design on an 11kV oil immersed transformer, showcasing cooling fins for rapid heat dissipation and stable performance.
The scientifically arranged heat sink and radiator fins on our 11kV oil transformers optimize airflow, dissipate heat rapidly, and maintain stable temperature for consistent performance under heavy loads.

This detailed visual highlights the engineered excellence of the cooling system in our 11kV Oil-Immersed Transformer, a defining feature that ensures both performance and reliability. The precisely arranged radiator fins create optimized airflow channels while maximizing heat exchange surface area, allowing the transformer oil to dissipate heat quickly and efficiently. This intelligent design maintains consistently safe operating temperatures, even under continuous heavy load, making it ideal for industrial, commercial, and utility applications.

Our advanced thermal management system forms the backbone of transformer dependability. By preventing overheating and maintaining uniform temperature distribution across the windings and core, it guarantees stable voltage regulation, reliable energy delivery, and consistent performance during peak demand periods. These characteristics not only extend the operational lifespan but also reduce the likelihood of unexpected downtime and minimize long-term maintenance costs, delivering a lower Total Cost of Ownership.

In addition to thermal efficiency, the cooling system enhances overall transformer durability. The robust design ensures resistance to environmental stresses, including high ambient temperatures, dust, and humidity. Combined with high-quality oil insulation and corrosion-resistant enclosures, this allows our oil-filled high-voltage transformers to withstand demanding conditions while delivering uninterrupted power.

This demonstration of precision engineering enables our 11kV Oil-Immersed Transformers to provide exceptional reliability, energy efficiency, and long-term performance, fulfilling our commitment to protecting your investment and ensuring dependable power supply year after year.

High-Grade Ceramic Insulating Sleeves: Safety & Durability

High-quality ceramic insulating sleeve and bushings on an 11kV oil immersed transformer, providing superior electrical insulation and preventing breakdown.
Our 11kV transformers feature high-voltage ceramic insulating sleeves that significantly enhance dielectric strength and resistance to electrical breakdown, ensuring ultimate safety and reliability.

This detailed product image zooms in on a vital safety guardian within our 11kV oil-immersed transformer: the High-Strength Ceramic Insulating Sleeve. Crafted from premium-grade, high-purity ceramic material, these sleeves are engineered to deliver exceptional dielectric strength and superior insulation. They form a critical barrier, effectively preventing arc flashes, tracking, and electrical breakdown even under extreme high-voltage stress and fluctuating environmental conditions.

This robust insulation system is fundamental to the secure and fault-free operation of the transformer. It serves as the first line of defense, protecting equipment integrity and the safety of surrounding personnel and environment. By reducing catastrophic failure risk and unplanned downtime, this engineered component ensures safety, long-lasting performance, and superior ROI.

Precision Manufacturing & Quality Control of 11kV Transformers

11kV oil immersed transformers used in large industrial plants, medical facilities, and construction sites.
Versatile 11kV transformers for various industrial applications.

Our 11kV oil-immersed transformers are engineered to deliver unwavering performance where it matters most. Built with robust insulation and corrosion-resistant materials, they guarantee safety and operational continuity across diverse and challenging sectors. Discover how our solutions provide the resilient power foundation for your critical operations.

• Large Industrial Plants & Manufacturing Hubs
Ensure your production lines and heavy machinery operate without interruption. Our transformers deliver stable, high-capacity power for smelters and automated lines. This minimizes costly downtime while maximizing productivity in 24/7 industrial operations.

• Hospitals & Critical Medical Facilities
Where power quality is non-negotiable, we deliver absolute reliability. Our units deliver uninterrupted, precise power for critical medical equipment. This ensures patient safety and supports vital healthcare infrastructure.

• Large-Scale Construction & Remote Projects
Power your project from the ground up, no matter how harsh or isolated the site. Designed for mobile substations, our transformers resist dust, moisture, and temperature extremes, ensuring reliable temporary power.

• Utilities & Renewable Energy Integration
As a cornerstone of public and private infrastructure, our transformers facilitate efficient power distribution for utilities and enable the seamless integration of solar and wind farms into the grid. They ensure stable voltage transformation, supporting the transition to sustainable energy.

11kV Oil Transformer Certifications

Logos of international quality and safety certifications for our 11KV oil immersed transformers.
Our 11KV oil immersed transformer meets all required international certifications, ensuring quality, safety, and compliance.

We hold multiple international certifications that guarantee the quality and reliability of our 11kV oil immersed transformers. These certifications confirm our products not only meet but consistently exceed the highest global standards for safety and performance.

Global Project Cases: Reliable Power Supply in 50+ Regions

We take pride in our close collaboration with clients and partners across the globe to deliver fully customized transformer solutions.

Our team meeting with international clients and partners discussing transformer projects.
Collaborating with global partners to deliver quality transformers.

FAQs: 11kV Oil Immersed Transformer Price, Maintenance & Use

What is an oil immersed transformer?

Oil immersed transformers use high-grade insulating oil as coolant and dielectric medium. Our design ensures efficient heat dissipation through natural convection. This makes it ideal for industrial and residential power distribution.

Which transformer is used in 11kV networks?

Engineers install step-down oil immersed transformers in 11kV networks. These units convert 11kV primary voltage to 400V, 415V, or 433V. This provides safe power for end-user consumption. We manufacture these units in various capacities, from 50kVA up to 2500kVA, to suit different load requirements.

How much does an 11kV oil immersed transformer price vary?

11kV oil immersed transformer prices depend on kVA capacity and winding materials. Loss requirements like S11 or S13 also affect the cost. Contact our sales team for a customized quote and the latest 2026 price list tailored to your project needs.

What is the principle of an 11kV transformer?

An 11kV transformer operates on the principle of electromagnetic induction. Primary and secondary coils wound around a silicon steel core transfer energy. Magnetic fields move electricity between circuits. Our high-permeability cores minimize energy loss and maximize transmission efficiency.

What is the difference between 11kV and 33kV transformers?

The primary difference lies in the insulation level and application. 11kV transformers serve local grids. 33kV units act as sub-transmission for larger distances. 33kV models require more insulation and higher prices.

Why choose Solarasia as your 11kV oil immersed transformer manufacturer?

As a professional 11kV oil immersed transformer manufacturer, we adhere strictly to IEC 60076 and ISO standards. We test every unit for ratio, polarity, and dielectric strength to ensure reliability in harsh solar PV environments.

Get a Quote for 11kV Oil Immersed Transformer

Contact us today for technical specifications, pricing, and project support.

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