1600KVA Oil Immersed Distribution Transformer

The Usune 1600kVA oil immersed distribution transformer is optimized to address common issues found in traditional transformers, such as high losses, excessive noise, three-phase imbalance, and poor environmental adaptability. The core utilizes a 3D wound layout forming an equilateral triangle; the magnetic circuit is gapless, with three equal-length magnetic paths that are minimized in distance. The core column cross-section approaches a circular shape, significantly enhancing magnetic permeability efficiency, fundamentally reducing no-load losses and operating noise, achieving precise three-phase balance, and mitigating harmonic interference.

Suitable for 10kV, 20kV, and 36kV voltage applications, the product is precision-manufactured in standardized facilities and undergoes rigorous, comprehensive testing. It features stable performance, strong overload resistance, and high operational safety, making it an ideal choice for integration with prefabricated or modular substations and a preferred solution for modern smart grid upgrades.

Core Structural Features

1. Core System

The core utilizes high-permeability, low-loss grain-oriented silicon steel sheets, processed using imported West German Georg transverse cutting equipment and a 45° seamless splicing technique. The silicon steel sheets are formed into a multi-step circular cross-section structure, completely eliminating magnetic circuit air gaps and reducing leakage flux losses, thereby effectively lowering operating noise and no-load power consumption. The overall core structure is compact and stable with high magnetic saturation resistance, ensuring long-term, smooth equipment operation.

2. Winding Structure

The 1600kVA oil immersed distribution transformer employs a differentiated winding design: the high-voltage winding features a cylindrical structure, while the low-voltage winding supports both cylindrical and foil-type configurations. This design significantly enhances the equipment's resistance to short circuits and lightning strikes, preventing coil deformation or damage caused by current surges. The concentric arrangement of high- and low-voltage coils optimizes magnetic circuit distribution, ensuring more uniform power transmission and comprehensively improving overall operational efficiency.

3. Tank Structure

The tank is fabricated from high-precision cold-rolled steel using a specialized corrugated tank production line. Its surface is finished with a petrochemical-grade anti-corrosion coating, offering long-term resistance to oil and chemical erosion, making it suitable for various harsh industrial environments. The corrugated structure serves a dual purpose: it facilitates efficient heat dissipation to stabilize temperature rise during full-load operation while also accommodating the thermal expansion and contraction of the transformer oil. The fully sealed structure isolates the unit from air, slowing the aging of the insulating oil and significantly extending the equipment's service life.

4. Insulation Structure

The unit employs a Class A insulation system, characterized by high dielectric strength and excellent high-temperature resistance. With the high- and low-voltage coils arranged concentrically, the inter-coil gap utilizes a composite structure—combining paper tube sheathing with small oil gaps—to optimize the internal insulation layout and eliminate insulation "dead zones." This effectively enhances voltage withstand capability and insulation stability, preventing dielectric breakdown and discharge faults, thereby ensuring safe and reliable long-term operation.

Product Type

Economic Benefits and Energy Conservation/Emission Reduction

The Usune 1600kVA oil immersed distribution transformer offers outstanding energy-saving performance, significantly reducing annual electricity costs and carbon emissions for users. The following core formulas allow for the precise quantification of the equipment's operational value:
1. Annual Electricity Cost Formula: Annual Cost (CNY/year) = [No-load Loss (kW) + Load Loss (kW) × (Average Load Factor)²] × 365 days × 24 hours × Electricity Price
2. Carbon Emission Formula: Annual CO₂ Emissions = [No-load Loss (kW) + Load Loss (kW) × (Average Load Factor)²] × 365 days × 24 hours × Carbon Emission Factor (kg-CO₂/kWh)
Compared to traditional transformers of the same specifications, this product features lower no-load and load losses. Under typical industrial operating conditions with a 60% average load factor, this unit achieves significant electricity savings, directly reducing corporate energy costs and lowering carbon emissions. It aligns with "Dual Carbon" policy requirements, creating both economic and environmental value for users.

Technical Parameters

10kV S11 series three-phase oil-immersed distribution transformer

Note: For transfomers with rated capacity of 500 kVA and below,the load loss above the ramp in the table is applicable to the Dyn11 connection group,and the load loss below the ramp is applicable to the Yyn0 connection group.

10kV S13 series three-phase ol-immersed distribution transformer

10kV S14 series three-phase oil-immersed distribution transformer

Project Reference

Cas-space Rocket Launch Project

Test Report

Real-World Application Case

As a professional and reliable power equipment supplier, Usune’s 1600kVA 10kV oil-immersed distribution transformer was successfully deployed in an urban-rural grid renovation project in Donghai Town, Lufeng, Guangdong. The installation effectively resolved local issues regarding insufficient power capacity and unstable supply.

Prior to the upgrade, the area's traditional distribution equipment lacked sufficient capacity; during peak summer demand, issues such as voltage drops and overload-induced trips were common, severely affecting residential electricity use and the operations of small and micro-enterprises. In 2026, the local power supply bureau initiated a grid upgrade project. After a multi-dimensional comparison of product performance, energy-saving capabilities, and operational stability, they selected Usune’s high-efficiency oil-immersed distribution transformer.

The project utilized a prefabricated substation installation model. Once commissioned, the equipment—characterized by low losses, low noise, and excellent three-phase balance—effectively eliminated the region's power supply bottlenecks. The unit operates stably under high-temperature, high-load summer conditions without abnormal noise or harmonic interference. Measured data shows that equipment losses are far lower than those of standard transformers meeting national benchmarks; annual grid electricity costs dropped by over 18%, accompanied by a reduction in carbon emissions. This stable power supply ensures reliable electricity for residents and continuous production for local processing enterprises, establishing the project as a benchmark for energy-saving grid renovations in eastern Guangdong.

FAQ

Q1: What scenarios is the Usune 1600kVA oil immersed distribution transformer suitable for?

The product line covers voltage levels of 10kV, 20kV, and 36kV, offering exceptional adaptability. It is primarily used for urban-rural grid upgrades, power distribution for industrial and mining enterprises, and deployment in harsh industrial environments such as chemical and food processing plants. It is compatible with prefabricated enclosures and combined substations, and meets the high-power supply demands of scenarios such as tunnel engineering projects and large commercial complexes.

Q2: What are the core advantages of this transformer compared to traditional products?

Compared to traditional transformers of the same capacity, this product offers four key advantages: first, the 3D wound core design with a gapless magnetic circuit results in lower losses and reduced noise; second, the optimized coil and insulation structure provide superior short-circuit resistance and enhanced operational safety; third, the industrial-grade, corrosion-resistant corrugated oil tank is suitable for harsh operating conditions and ensures a longer service life; and fourth, precise three-phase balancing suppresses third-order harmonics, ensuring more stable power supply quality.

Q3: What is the service life and long-term maintenance cost of the 1600kVA oil immersed distribution transformer?

The equipment features a fully sealed oil tank structure that isolates the unit from air, thereby delaying the aging of the insulating oil and enabling a service life of over 20 years. With a mature, reliable design and an extremely low failure rate, the unit requires no frequent maintenance—only periodic checks of the oil level and operating noise are needed. Compared to traditional transformers, it significantly reduces labor and material costs associated with operation and maintenance, offering superior cost-effectiveness over its entire lifecycle.