Specifically designed for indoor power distribution, the Usune 1500 1600kVA Three-Phase Dry Type Transformer differs from traditional oil-immersed transformers by eliminating insulating oil entirely, thereby fundamentally preventing safety hazards such as oil leaks, fires, and explosions. The unit features a compact structure, easy installation, eco-friendly low-noise operation, and reduced energy consumption. It requires no complex daily maintenance and ensures long-term, stable operation, making it suitable for various indoor power supply scenarios—including densely populated areas, complex operating environments, and locations with limited maintenance access.
Constructed using high-temperature resistant insulation materials and containing no insulating oil, the unit completely eliminates risks associated with oil leaks, spontaneous combustion, and explosions. It operates stably under overload and high-temperature conditions and requires no dedicated oil pits or fire-isolation facilities. With a high safety rating, it is well-suited for densely populated areas such as hospitals and schools.
The 1500 1600kVA Three-Phase Dry Type Transformer operates without oil pollution or harmful gas emissions, meeting green building standards for power distribution. It can be installed directly in enclosed spaces—such as indoor areas, underground equipment rooms, and subway tunnels—without the need for additional pollution-control infrastructure, offering excellent environmental adaptability.
Optimized core and winding structures effectively reduce electromagnetic vibration and operating noise, achieving levels superior to industry standards. Additionally, the extremely low partial discharge rate effectively slows insulation aging, ensuring long-term stable operation without interfering with the performance of sensitive electrical equipment. 4 Low Energy Consumption and High Cost-Efficiency
The equipment utilizes high-quality silicon steel sheets, significantly reducing both no-load and load losses. With high energy conversion efficiency, it effectively lowers long-term energy consumption and operational electricity costs for buildings and industrial sites, delivering substantial energy-saving benefits.
Featuring an integrated air-insulation and air-cooling structure, the unit eliminates the need for periodic inspection or replacement of insulating oil; only simple routine checks are required, resulting in extremely low operation and maintenance costs. It is suitable for complex operating conditions, including temperatures ranging from -20°C to +40°C, high humidity, dusty environments, and altitudes up to 1,000 meters.
The 1500 1600kVA Three-Phase Dry Type Transformer is compact and lightweight, requiring minimal installation space. It facilitates easy transport, hoisting, and on-site commissioning, making it ideal for space-constrained locations such as basements, subway tunnels, and small equipment rooms, as well as for various new construction and renovation power distribution projects.
The Usune 1500 1600kVA Three-Phase Dry Type Transformer operates on the principle of electromagnetic induction to achieve voltage conversion and power transmission, featuring fully upgraded insulation and heat dissipation methods compared to traditional transformers.
When alternating current (AC) flows through the primary winding, it generates an alternating magnetic flux within the iron core. This flux penetrates the secondary winding, inducing an electromotive force through electromagnetic induction. By adjusting the turn ratio between the primary and secondary windings, the unit steps AC voltage up or down and ensures stable power transmission.
The equipment uses air as the insulation and cooling medium between the windings and the iron core; it contains no insulating oil and dissipates heat via natural or forced air cooling. It operates safely without hidden hazards, ensuring stable, long-term power distribution.
| Parameter Item | Technical Specification |
| Rated Capacity | 30～2500 kVA (Main specifications: 1500/1600kVA) |
| HV Rated Voltage | 10kV / 10.5kV |
| LV Rated Voltage | 0.4kV |
| Rated Frequency | 50/60Hz |
| Vector Group | Dyn11 |
| Impedance Voltage | 4%～6% (standard: 6%) |
| Ambient Temperature | -20℃～+40℃ |
| Altitude | ≤1000m |
| Relative Humidity | ≤95% (no condensation) |
| Installation Site | Indoor use only |
A subway renovation project in Hangzhou selected the Usune 1600kVA dry-type transformer as its core power distribution equipment. The underground subway environment is characterized by enclosed spaces, high humidity, and dust, making operation and maintenance challenging, while also imposing strict requirements for fire safety and noise reduction. With advantages such as being oil-free, fire-resistant, maintenance-free, and compact, this product is perfectly suited for these operating conditions. Once commissioned, it ensures a stable power supply without safety hazards, effectively guaranteeing the continuous operation of subway lighting, signaling, and ventilation systems while reducing the burden of operation and maintenance.
A renovation and expansion project for a Grade-A tertiary hospital in East China utilized Usune 1500kVA dry-type transformers in key areas such as operating rooms, ICUs, and radiology departments. Precision medical equipment demands strict standards for power stability and safety; the product’s characteristics—low partial discharge, low noise, and zero pollution—prevent electromagnetic interference from affecting medical equipment, while its oil-free design eliminates fire hazards, ensuring a stable and safe power supply for critical hospital areas.
Yes. The product is designed for complex indoor operating conditions and can operate continuously in environments with humidity up to 95% (non-condensing), high dust levels, and altitudes up to 1,000 meters. Its well-sealed insulation structure effectively resists moisture and dust erosion, minimizing the risk of insulation aging or short circuits, making it suitable for subways, factories, basements, and similar locations.
No replacement of insulation media is required, and maintenance costs are extremely low. The product utilizes an air-insulated, air-cooled structure without consumable insulation components, eliminating tedious procedures like oil changes and oil quality testing; only basic routine inspections are needed, significantly saving on labor and material costs.
Its core advantages include fire safety, eco-friendliness, maintenance-free operation, and suitability for enclosed spaces. Traditional oil-immersed transformers carry risks of oil leaks and fires and require extensive auxiliary facilities and complex maintenance. In contrast, Usune dry-type transformers are oil-free, pollution-free, quiet, energy-efficient, and offer superior safety. This product is designed for indoor use, specifically targeting high-safety power distribution scenarios such as hospitals, schools, subways, commercial buildings, and indoor factory facilities.
This Usune dry-type transformer is designed for indoor use. The installation site must be well-ventilated and free from flammable or explosive gases and corrosive dust. The installation surface must be level, solid, and capable of supporting the equipment's weight. Adequate space for heat dissipation must be reserved; the unit must not be enclosed or sealed off, and outdoor installation is strictly prohibited. For installations at altitudes exceeding 1,000 meters or in environments with excessive humidity, prior adjustments and testing are required to ensure safe operation.
The equipment must be operated within its rated voltage and frequency specifications; prolonged overload operation is prohibited. Before startup, inspect all wiring connections and grounding devices to ensure they are secure and free from loose connections or short-circuit risks. No dedicated on-site attendant is required during normal operation; however, regular checks of the equipment's temperature and operating noise are necessary, and the heat dissipation areas must be kept free of debris.
When not installed or in use, the equipment must be stored in a dry, ventilated, and dust-free indoor warehouse. Protect it from prolonged exposure to moisture, direct sunlight, impacts, or crushing forces. Maintain the storage temperature between -20°C and +40°C to prevent the aging or damage of insulation components.
As a reliable supplier and professional manufacturer leveraging a mature quality control system from our own factory, Usune offers standard warranty services for its entire range of dry-type transformers. Should any quality-related issues (excluding man-made damage) arise during the warranty period, the manufacturer provides free repairs and parts replacement, fully safeguarding customer interests. All products fully comply with China's domestic power industry acceptance standards.
The brand provides comprehensive one-on-one technical services, including a one-stop solution covering preliminary model selection, on-site installation guidance, equipment commissioning, and operation and maintenance training. Customized technical solutions are available for project retrofits and specialized operating environments, ensuring rapid resolution of issues encountered during installation, operation, and commissioning.
We have established a nationwide rapid-response after-sales system. Upon receiving a service request, professional technicians promptly coordinate to provide on-site inspection and troubleshooting services. We efficiently resolve operational faults, minimize downtime losses, and ensure the continuous, stable operation of the power distribution system.
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No. 298, Wei 17th Road, Yueqing Economic Development Zone, Yueqing, Wenzhou City, Zhejiang Province, China
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