Product Overview
The 10kV oil-immersed distribution transformer is a general-purpose indoor/outdoor core equipment for high-voltage power distribution. It is suitable for three-phase AC 50Hz, rated voltage 10kV power transmission and distribution systems. Widely used in urban power grid renovation, industrial and mining enterprises, industrial parks, residential areas, water conservancy projects, rail transit, petrochemical, metallurgical and mining, and other high-voltage power distribution locations. Its main functions include voltage transformation, power distribution, system voltage stabilization, and power transmission. It can adapt to various applications such as high-voltage power distribution, motor power supply, lighting distribution, and reactive power compensation, making it key equipment for efficient power transmission in 10kV distribution networks.
The product adopts a fully sealed structure (non-sealed structure optional). The core uses high-quality, high-permeability cold-rolled grain-oriented silicon steel sheets. The windings use high-strength enameled copper wire (aluminum wire optional). Equipped with an efficient heat dissipation system and specialized insulating oil, it features low loss, low noise, strong overload capacity, excellent insulation performance, stable operation, and long service life. It complies with national standards GB 1094.1～1094.5, GB/T 6451, GB 20052, and has passed CCC compulsory certification and ISO quality system certification, ensuring reliable performance and quality, suitable for various complex high-voltage distribution environments.
Operating Environment
1. Ambient temperature: -30℃～+40℃, 24-hour average temperature ≤ +35℃; anti-freezing design customizable for low-temperature environments.
2. Altitude: ≤1000m; customizable for high-altitude adaptation up to 4000m under special conditions.
3. Relative humidity: Daily average ≤ 95%, monthly average ≤ 90%; avoid severe condensation or standing water; anti-condensation devices can be provided for humid environments.
4. Installation site: No violent vibration, no corrosive gases, no flammable or explosive dust, no conductive dust; keep away from strong electromagnetic interference.
5. Outdoor units can withstand rain, snow, sand, sunlight, severe cold, and other natural environments; indoor units require good ventilation and no standing water.
Installation inclination: Angle between the unit body and vertical plane ≤ 3° to ensure stable operation and even oil distribution.
Technical Parameters
Item | Unit | Parameters |
|---|---|---|
Rated Voltage | kV | 10±5%/0.4 (±2.5% customizable) |
Rated Frequency | Hz | 50 |
Rated Capacity | kVA | 50, 80, 100, 125, 160, 200, 250, 315, 400, 500, 630, 800, 1000, 1250, 1600, 2000, 2500 |
Number of Phases | --- | Three-phase |
Connection Symbol | --- | Dyn11 (common), Yyn0 (customizable) |
Cooling Method | --- | ONAN (Oil Natural Air Natural), ONAF (Oil Natural Air Forced - customizable) |
Insulation Level | kV | Power frequency withstand voltage 42kV/1min; induced withstand voltage 75kV (10s) |
Impedance Voltage | % | 4.0%, 4.5%, 6.0% (matched according to capacity, customizable) |
Noise Level | dB | ≤58～70 (depending on capacity, low-noise type customizable) |
Protection Grade | --- | Indoor IP20; Outdoor IP33, IP54 (customizable) |
Insulating Oil | --- | 25# transformer oil (45# low-temperature type customizable) |
Product Features
1. High Efficiency, Low Loss, Outstanding Energy Savings: Uses high-permeability cold-rolled grain-oriented silicon steel sheets, stepped core joints, and fully inclined core structure to effectively reduce no-load loss and operating noise. Optimized winding conductor cross-sections and arrangement reduce load loss, significantly saving electricity costs over long-term operation, meeting national energy efficiency standards, and suitable for green energy-saving distribution needs.
2.Excellent Insulation, High Safety Margin: Multiple insulation structures for windings and core using high-quality insulating materials, paired with specialized transformer oil, providing three functions: insulation, heat dissipation, and arc extinguishing. The overall vacuum oil filling process thoroughly removes bubbles and impurities from the oil, resulting in high insulation strength, strong short-circuit withstand capability, resistance to aging during long-term high-voltage operation, and eliminating safety hazards like electric leakage and oil leakage.
3. Efficient Heat Dissipation, Strong Overload Capacity: Uses corrugated tank, tube, or fin-type radiator design, providing large cooling surface area and low temperature rise, with heat dissipation efficiency exceeding industry standards. Allows stable long-term operation at rated load, with strong short-term overload capacity to easily handle sudden peak power demands, suitable for complex operating conditions.
4. Robust Structure, Comprehensive Protection: Tank made from high-quality cold-rolled steel plates welded for high strength and good sealing, effectively preventing oil leakage and impact from external vibration. Outdoor units feature rain, dust, and anti-oil-fouling protection; indoor units are compact and aesthetically pleasing, adaptable to different installation environments with strong durability.
5. Maintenance-Free Design, Long Service Life: Fully sealed structure effectively isolates air and moisture, slowing down the oxidation rate of the insulating oil, significantly reducing maintenance frequency. The overall design meets long-term operation standards for high-voltage equipment. Under normal maintenance conditions, the service life can exceed 25 years, reducing equipment replacement costs.
6. Easy Installation, Wide Versatility: Moderate size and stable center of gravity, supporting various installation methods: indoor/outdoor, floor/pole mounting. Can be directly connected to 10kV distribution networks, used with 10kV switchgear and distribution cabinets, offering strong system compatibility and flexible adjustment according to site conditions, adapting to different switchgear room layout requirements.
Our Advantages
1.Strong Customization Capability: Products can be customized according to customer requirements for different capacities, voltage levels, connection types, cooling methods, and protection grades, precisely adapting to special conditions such as high altitude, low temperature, and corrosion protection.
2.Standardized Production & Strict Quality Control: Standardized production line operations with an established, stringent quality management system. Multiple inspections throughout the entire process, from raw material procurement, core processing, winding manufacturing to final assembly and testing, ensure consistent product performance and reliable quality.
3.Complete Qualifications: Provides complete type test reports, factory test reports, CCC certification, and other authoritative documents, fully meeting grid connection and project acceptance requirements without needing to prepare additional qualification materials.
4.Stable Delivery & Comprehensive Support: Stable delivery times, supporting expedited orders. Provides professional transportation, on-site installation guidance, and equipment commissioning services, ensuring rapid deployment.
5.Complete After-Sales Service System: Provides full lifecycle support including technical training, regular inspections, emergency fault handling, oil testing and replacement, ensuring stable equipment operation and peace of mind for customers.
Ordering Guide
Please provide the following detailed information when ordering to enable precise product customization and solution optimization:
1. Specify the required rated capacity, input voltage (10kV), output voltage, frequency, and connection symbol to define core power requirements.
2. Describe the operating environment, including indoor/outdoor, altitude, ambient temperature, humidity, and any special requirements like corrosion protection or anti-freezing.
3. Determine the cooling method, insulating oil type, impedance voltage, and energy efficiency level to clarify equipment performance requirements.
4. Provide installation method (floor/pole mounting), cable entry/exit method, and any relevant switchgear room layout requirements for optimized installation planning.
Specify any special functional requirements, such as tap-changer positions, temperature measurement devices, pressure relief valves, oil level gauges, thermostats, low-noise design, etc.
