The Usune 2000kVA Three-Phase Dry Type Transformer is a core product of Zhejiang Usune Electric Co., Ltd., a specialized manufacturer dedicated to the R&D and production of power transmission and distribution equipment. The unit eliminates the need for insulating oil for cooling or insulation, instead employing an air-insulated, air-cooled design that completely removes safety risks such as oil leakage, fire, and explosion.
The transformer features a compact, lightweight design with a small footprint, facilitating easy transport and installation. As a professional transformer supplier, Usune adheres strictly to both domestic and international electrical standards throughout the entire process, exercising rigorous control over materials and craftsmanship to meet the high safety and environmental standards required for indoor power distribution applications.
The unit utilizes high-temperature-resistant insulating materials and contains no insulating oil; it eliminates risks of oil leakage, fire, and explosion, ensuring a high safety factor for use in confined spaces.
Operation generates no oil contamination or harmful gas emissions. Indoor installation requires no oil pits or fire-isolation facilities, making it ideal for low-carbon building power distribution needs.
Optimized core and winding structures ensure low operating noise. Low partial discharge levels guarantee insulation stability during long-term operation and minimize the risk of failure.
High-grade, premium silicon steel sheets are used to reduce no-load and load losses, effectively lowering electricity costs over the long term.
The oil-free design eliminates the need for periodic oil replacement or filtration; routine maintenance requires only simple dust removal and inspection.
Operates reliably in high-humidity, high-altitude, and dusty environments; suitable for specialized locations such as underground spaces, subways, hospitals, and schools.
Small footprint and lightweight design save space, while enhancing efficiency during transport and on-site hoisting/installation.
Silicon steel sheets, high-temperature resistant insulation materials, and copper wires undergo rigorous sampling inspections to prevent substandard materials from entering the production line.
Dedicated personnel conduct inspections during critical stages—such as core stacking, winding, and casting/curing—to correct process deviations in real-time.
Every unit undergoes withstand voltage tests, partial discharge tests, temperature rise tests, noise tests, and loss tests; units are released for shipment only after meeting all specifications.
Products meet domestic power grid standards and international electrical safety codes; complete test reports are archived and available for project acceptance review.
| Item | Technical parameter |
| Rated Capacity | 30～2500 kVA |
| HV Rated Voltage | 10kV / 10.5kV |
| LV Rated Voltage | 0.4kV |
| Rated Frequency | 50/60Hz |
| Vector Group | Dyn11 |
| Impedance Voltage | 4%～6%（normal6%） |
| Item | Technical parameter |
| Ambient Temperature | -20℃～+40℃ |
| Altitude | ≤1000m |
| Relative Humidity | ≤95%（no condensation） |
| Installation Site | indoor |
A subway line in an East Chinese city procured 12 Usune 2000kVA Three-Phase Dry Type Transformers for indoor station power supply. Given the enclosed, humid subway environment—which demands strict fire safety and environmental compliance—the equipment has operated fault-free for three years. Stable noise and partial discharge metrics ensure the continuous, safe operation of the subway's power supply system.
A comprehensive Grade-A tertiary hospital selected eight of these transformers to upgrade its power distribution facilities. Medical facilities require high standards for environmental cleanliness and equipment stability; the maintenance-free nature of these transformers avoids frequent inspections that could disrupt medical services. Their low-noise, pollution-free operation suits the hospital environment, while low-loss performance delivers long-term electricity cost savings.
A manufacturing industrial park in Zhejiang Province installed 15 Usune 2000kVA dry-type transformers to power workshop production and office facilities. Designed to withstand heavy dust and frequent load fluctuations, this product’s robust environmental adaptability ensures stable performance under complex operating conditions, while its energy-saving features help facilities meet green production and emission reduction targets.
Ensure adequate ventilation and heat dissipation space around the installation site and keep the area free of flammable or explosive materials. For high-altitude or high-humidity regions, simple ventilation fans can be added to ensure effective heat dissipation; in dusty factory environments, the use of dust-proof protective mesh is recommended.
The unit features an integrated base for direct floor mounting, eliminating the need for a dedicated oil pit. Wiring terminals are positioned with ample clearance for easy future inspection. When installing multiple units side-by-side, maintain sufficient spacing to prevent heat accumulation.
The unit supports continuous 24-hour operation under normal loads; avoid prolonged operation exceeding the rated capacity. During rainy or humid seasons, regularly clean accumulated dust from the unit's surface to prevent condensation from compromising insulation performance.
Q1: What are the key differences between the Usune 2000kVA Three-Phase Dry Type Transformer and oil-immersed transformers?
A1: The primary difference lies in the insulation and cooling medium. This dry-type transformer relies on air for insulation and heat dissipation and contains no insulating oil, thereby eliminating risks such as oil leaks, fires, and explosions at the source. It is eco-friendly, virtually maintenance-free, and ideal for enclosed indoor environments, whereas oil-immersed transformers are typically used for outdoor open-air power distribution.
Q2: What applications are suitable for the 2000kVA dry-type transformer?
A2: With strong environmental adaptability, this product is ideal for indoor power supply scenarios requiring safety, environmental compliance, and low noise levels—such as commercial complexes, schools, hospitals, factories, subways, and underground utility tunnels. It operates stably over the long term in high-humidity, high-altitude, and dusty environments, making it a preferred choice for green power grids in modern cities.
Q3: Does the Usune dry-type transformer require frequent maintenance?
A3: No; the unit features an oil-free design with air-based cooling, making it essentially maintenance-free. Unlike oil-filled transformers, there is no need for periodic replacement or testing of insulating oil; routine maintenance requires only occasional dust removal and inspection of wiring terminals. This significantly reduces the manpower and financial investment required for ongoing operations and maintenance, making it ideal for scenarios requiring long-term, continuous power supply at unmanned sites.
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No. 298, Wei 17th Road, Yueqing Economic Development Zone, Yueqing, Wenzhou City, Zhejiang Province, China
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