Single phase capacity 5 to 333kVA Oil Immersed Transformer three phase power distribution solution for industrial applications

Product Description:

The Oil Immersed Transformer is a highly reliable and efficient electrical device designed to transfer electrical energy between circuits through electromagnetic induction. This transformer is ideal for a wide range of industrial, commercial, and utility applications, offering robust performance and long service life. Engineered to meet the rigorous standards of IEC 60076 transformers, this product ensures safety, efficiency, and durability in various electrical distribution systems.

One of the standout features of this oil immersed transformer is its versatile voltage rating. It is available in standard configurations such as 12.47kV/7.2kV and 13.8kV/480V, with customizable options to suit specific project requirements. This flexibility allows users to select the perfect transformer that matches their operational voltage needs, optimizing energy distribution and minimizing losses.

The capacity of the transformer is designed to cater to both single-phase and three-phase power systems. For single-phase applications, the transformer capacity ranges from 5kVA to 333kVA, making it suitable for smaller loads and localized power distribution. For larger three-phase systems, the capacity extends from 45kVA up to an impressive 3750kVA, accommodating heavy industrial loads and extensive electrical networks. This broad capacity range ensures that customers can find the ideal solution for a variety of power distribution scenarios.

This fully sealed oil-immersed transformer utilizes oil insulation, which plays a critical role in its operational efficiency and safety. The oil acts as an excellent insulating medium, providing superior dielectric strength and cooling properties. The oil insulation helps in effectively dissipating heat generated during the transformer's operation, preventing overheating and enhancing the longevity of the equipment. The fully sealed construction ensures that the insulating oil remains uncontaminated and prevents moisture ingress, thereby maintaining the transformer's performance and reliability over time.

Cooling in this transformer is achieved through the oil immersion method, where the transformer windings and core are submerged in insulating oil. This oil immersion cooling method is highly effective in maintaining optimal operating temperatures, reducing thermal stresses, and enhancing the overall durability of the transformer. The self-cooling capability reduces the need for external cooling systems, making the transformer more compact and easier to maintain.

Additionally, this oil immersed transformer complies with CE certification requirements, reflecting its adherence to strict European safety, health, and environmental protection standards. The CE transformer designation assures users of the product’s quality, reliability, and conformity to international regulations, making it a trustworthy choice for global markets.

Designed with precision and manufactured using high-quality materials, this oil immersed transformer is a dependable component in electrical power distribution. Its adherence to IEC 60076 standards guarantees that it meets international benchmarks for performance, safety, and testing, ensuring peace of mind for engineers and end-users alike. Whether for upgrading existing electrical infrastructure or installing new systems, this transformer delivers consistent performance with minimal maintenance.

In summary, the Oil Immersed Transformer offers a combination of customizable voltage ratings, a wide range of capacity options for both single-phase and three-phase systems, and advanced oil insulation and cooling technologies. Its fully sealed oil-immersed design, compliance with CE standards, and alignment with IEC 60076 transformer specifications make it an optimal choice for reliable and efficient power distribution across various applications.

Features:

Our transformers offer a wide capacity range from 50kVA to 2500kVA, with primary voltages of 12.47kV, 13.8kV, and 25kV, and secondary voltages including 480V, 277V, 208V, and 120V. This versatility makes them ideal for use in commercial, industrial, and utility distribution networks.

Constructed with high-purity copper windings, these transformers ensure low electrical resistance and minimal copper loss. This results in excellent conductivity, supporting long-term stable and efficient operation.

All products comply with international standards such as ANSI C57, IEC 60076, and UL, and are certified for global markets. This guarantees adherence to strict quality and safety regulations worldwide.

We provide strong customization capabilities, allowing you to specify the capacity, voltage ratio, tap changer settings, and enclosure details. This flexibility ensures the transformer perfectly fits your unique project requirements.

Featuring a fully sealed oil-immersed design housed in a corrosion-resistant steel tank, these transformers are oil-leakage proof, weatherproof, and tamper-resistant. They are especially suited for outdoor pad-mounted installations.

The low noise and ultra-low iron loss design helps reduce energy consumption and operating costs, making these transformers an excellent choice for energy-saving initiatives.

Pre-wired and factory-tested, the units offer plug-and-play installation with no need for on-site assembly. This significantly saves labor and construction time during setup.

Maintenance requirements are minimal thanks to built-in features like a pressure relief valve and oil level indicator for easy monitoring. With proper care, the transformers can offer a service life exceeding 30 years.

Technical Parameters:

This transformer offers a capacity range from 50kVA to 2500kVA and operates on a three-phase system. It supports frequencies of 50Hz or 60Hz , making it suitable for various international power standards. The installation type is designed as a pad-mounted outdoor unit , ensuring convenient ground-level placement.

The primary voltage options include 12.47kV, 13.8kV, and 25kV , all customizable to meet specific requirements. On the secondary side, voltage outputs of 480V, 277V, 208V, and 120V are available, also customizable to fit various applications.

Constructed with high-purity oxygen-free copper windings, the transformer ensures superior conductivity and efficiency. It features minimal losses, with no-load loss capped at ≤ 0.2% and load loss at ≤ 1.0% of its rated capacity. The impedance voltage ranges from 4% to 6%, adjustable based on customer needs.

Cooling is managed through an oil-immersed (ONAN) method, while insulation is rated at ANSI FR3 / Class H . The unit is sealed hermetically to prevent oil leakage and is built with a corrosion-resistant galvanized steel tank for enhanced durability. Protection is provided with an IP54 rating , making the transformer both weatherproof and dustproof.

Safety features comply with the ANSI C57.12.00 short-circuit withstand standard, and noise levels remain low at ≤ 60dB measured from 1 meter distance. The transformer is equipped with essential accessories such as a pressure relief valve, oil level indicator, and temperature gauge, ensuring reliable operation and ease of maintenance.

Certifications cover major industry standards including ANSI C57, IEC 60076, UL, and CE . Additionally, customization options are available for voltage ratios, capacity, tap changers, and enclosure colors, allowing flexibility to meet specific project requirements.

Applications:

The TNNPI Oil Immersed Transformer, model PadMount, is a highly reliable and efficient electrical transformer designed for diverse application occasions and scenarios. Originating from Henan, this three-phase transformer boasts a single-phase capacity ranging from 5 to 333kVA, making it suitable for a wide spectrum of power distribution needs. Its oil insulation and oil immersion cooling method ensure superior thermal management, enhancing durability and operational stability in demanding environments.

One of the primary application occasions for the TNNPI PadMount transformer is in medium voltage power distribution networks. It is ideal for use as a transformer 25kV, providing a robust solution for stepping down voltage in urban, suburban, and rural electrical grids. Its ANSI/UL Certified transformer status guarantees compliance with stringent safety and performance standards, making it trusted by utilities and industrial users alike. Additionally, the transformer’s capability to operate as a 12.47kV transformer expands its versatility in various electrical infrastructure projects.

In industrial scenarios, the TNNPI oil immersed transformer is frequently deployed to serve manufacturing plants, commercial complexes, and large-scale facilities requiring stable and efficient power supply. Its customizable connection group label allows for tailoring to specific site requirements, ensuring seamless integration with existing electrical systems. The transformer is also well-suited for renewable energy applications, such as solar and wind farms, where reliable voltage regulation and insulation are critical.

The product’s packaging, consisting of a wooden crate combined with a steel frame, ensures safe transportation and delivery within 7-14 business days, with flexible payment terms including T/T and Western Union. With OEM/ODM supply ability, the TNNPI PadMount transformer offers tailored solutions to meet unique client specifications. Overall, this oil immersed transformer is an excellent choice for utility companies, industrial sectors, and infrastructure projects seeking a certified, efficient, and customizable transformer solution for medium voltage applications.