Advanced Power Transformer Technology for Efficient Power Distribution

As a reliable manufacturer and supplier from China, Zhejiang Usune Electric Co., Ltd. (Usune) is a professional Chinese factory producing 10KV, 20KV, and 36KV power transformers. Usune Power Transformers are core static electrical devices in power systems, achieving AC power transmission between multiple circuits through electromagnetic induction without altering the fundamental frequency. They offer advantages such as high efficiency, stability, and low maintenance and are widely used in power transmission and distribution, new energy, and industrial production, providing safe and reliable power supply for global power projects.

Application Scenarios and Case Studies

Case Study

Usune's 20KV oil-immersed power transformer has been applied to a large-scale wind-solar hybrid power station in eastern China, achieving stable grid connection between the new energy source and the regional power grid, providing continuous power to surrounding industrial parks and residential communities.

Main Application Areas

1. Power Transmission and Distribution

Power plant step-up transmission, substation step-down for industrial and residential use

2. Industrial Production

Providing stable voltage for equipment in factories, smelting plants, mines, etc., matching the needs of large motors

3. Urban and Rural Power Supply

Providing safe low-voltage power for buildings, communities, and public facilities

4. New Energy Power Generation

Adapting to wind farms and photovoltaic power stations to achieve grid connection of new energy sources

5. Commercial and Infrastructure

Used in airports, hospitals, data centers, etc., ensuring reliable power supply

Core Functions

1. Voltage Transformation

Step-up to reduce transmission losses, step-down to ensure safe use

2. Current Transformation

Matching the current requirements of different circuits

3. Impedance Matching

Improving power transmission efficiency

4. Electrical Isolation

Isolating primary and secondary circuits, improving safety and reducing interference

Product Classification

1. By Application

Transmission Transformer, Distribution Transformer, Plant Transformer

2. By Cooling Method

Oil-immersed, Dry-type

3. By Phase

Single-phase, Three-phase

Core Components

Iron core (silicon steel sheets), windings (copper/aluminum coils), insulation system, cooling system, and protective accessories (gas relay, oil conservator, etc.).

Product Features

Efficiency ≥98%, no rotating parts, long service life, stable voltage regulation, and convenient maintenance.

FAQ

Q1: What voltage levels of power transformers does Usune mainly provide?

A1: We mainly produce 10KV, 20KV, and 36KV transformers and can provide customized parameter solutions according to project requirements.

Q2: What cooling types does Usune Power Transformer have, and what scenarios are they suitable for?

A2: They are divided into oil-immersed (good heat dissipation, suitable for outdoor and heavy-duty industrial scenarios) and dry-type (environmentally friendly and safe, suitable for indoor, hospital, and data center applications).

Q3: What are the energy efficiency and service life of Usune power transformers?

A3: Energy efficiency ≥98%, low loss due to no rotating parts, normal service life exceeding 20 years under standard operating conditions, and simple maintenance.

View as

3 Phase Onan Distribution Transformer

As a professional power transmission and transformation equipment manufacturer in China, USUNE is committed to the research and development and production of high-performance, energy-saving, and environmentally friendly power equipment. The USUNE 3 Phase Onan Distribution Transformer (ONAN) is a new generation of high-performance distribution transformers, featuring a reasonable structure, excellent performance, and reliable quality, covering voltage levels of 10KV, 20KV, and 36KV. The product adopts advanced three-dimensional wound core technology and precision manufacturing processes, effectively reducing energy consumption and noise, achieving three-phase balance, and offering significant energy-saving and environmental advantages. It is widely applicable to urban and rural power grid transformation, industrial and mining enterprises, combined substations, and prefabricated substations, making it a trusted supplier choice for global power distribution projects.

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1600KVA Oil Immersed Distribution Transformer

The Usune 1600kVA oil immersed distribution transformer covers voltage ratings of 10kV, 20kV, and 36kV, representing a new generation of high-performance power distribution equipment developed by Zhejiang Usune Electric Co., Ltd. Featuring a 3D wound core structure and utilizing mature manufacturing processes from West Germany, the unit offers a rational design, low losses, and quiet operation, while ensuring balanced three-phase power supply and suppressing third-order harmonics. As a premium manufacturer of power equipment, Usune adheres strictly to domestic and international electrical standards; the unit employs Class A insulation and a fully sealed corrugated oil tank, ensuring excellent environmental adaptability and a long service life.

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2500KVA Liquid Immersed Distribution Transformers

Usune 2500kVA liquid immersed distribution transformers cover voltage ratings of 10kV, 20kV, and 36kV, representing a new generation of high-performance distribution equipment launched by Zhejiang Usune Electric. These units feature a 3D wound core structure characterized by a gapless magnetic circuit and equal, minimized magnetic path lengths for all three phases. The core limb cross-section approaches a circular shape, effectively addressing common issues found in traditional transformers, such as high losses, excessive noise, three-phase imbalance, and elevated third-harmonic content. Backed by professional imported production lines and rigorous quality control systems, the equipment offers robust short-circuit resistance, excellent environmental adaptability, slow insulation oil aging, and a long service life.

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4000KVAThree Phase Oil Immersed Transformer

The Usune 4000kVA three phase oil immersed transformer is a new, high-performance power device independently developed by Zhejiang Usune Electric, compatible with 10kV, 20kV, and 36kV voltage levels. It features an innovative 3D wound core structure—characterized by a gapless magnetic circuit and equal, minimized magnetic path lengths across all three phases—offering advantages such as low loss, low noise, three-phase balance, and low third-harmonic content. As a professional Chinese manufacturer of power equipment, Usune has comprehensively optimized the design of the core, coils, tank, and insulation structure. The product delivers outstanding energy-saving and carbon-reduction performance, making it widely suitable for urban and rural grid upgrades, power distribution in industrial and mining enterprises, as well as applications in combined substations and prefabricated modular substations

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630kVA Oil Immersed Self Cooled Transformer

The Usune 630kVA oil immersed self cooled transformer is a high-performance power distribution unit launched by Zhejiang Usune Electric Co., Ltd., compatible with multiple voltage levels including 10kV, 20kV, and 36kV. Featuring a 3D wound core structure—characterized by a gapless magnetic circuit and compact windings—it offers advantages such as low loss, low noise, three-phase balance, and robust short-circuit resistance. Equipped with Class A insulation and a corrosion-resistant corrugated oil tank, it ensures stable operation and a long service life. As a quality manufacturer in China's power industry, Usune offers a product widely suited for urban and rural grid upgrades, industrial and mining power supplies, and modular or prefabricated substations; its outstanding energy-saving performance makes it a preferred choice for modern power infrastructure.

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Three Phase Cast Resin Distribution Transformer

Usune (Zhejiang Usune Electric Co., Ltd.), a professional electrical equipment manufacturer in China, offers its Three Phase Cast Resin Distribution Transformer, an oil-free, dry-type power transformer that uses air as both cooling and insulation. It boasts core advantages such as fire and explosion protection, environmental friendliness, energy efficiency, low noise, and maintenance-free operation. Utilizing advanced vacuum casting technology and high-quality silicon steel sheets, the product is suitable for indoor power supply scenarios in commercial buildings, hospitals, schools, industrial plants, and subways. Its reliable performance has made it a preferred supplier solution for global power distribution systems. Manufactured under strict quality control in a local factory, it meets international safety and environmental standards.

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Usune is a professional Power Transformer manufacturer and supplier in China. We have an experienced sales team, professional technicians, and an after-sales service team.

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