Hermetically sealed oil-cooled transformer
Advantagesoil-immersed transformerS20
1. High energy efficiency, low losses, energy-saving and power-saving.
2. Fully sealed structure, maintenance-free and oil-proof.
3. High short-circuit resistance and stable operation.
4. Low noise level, suitable for residential areas and schools.
5. Good overload capacity and effective heat dissipation.
6. Cost-effective solution, suitable for new construction and renovation.
Technical specifications of the SM series 10 kV fully sealed oil-immersed distribution transformer.
Ⅰ. Product introduction
The three-phase oil-immersed fully sealed distribution transformer of the SM series is a high-efficiency and energy-saving transformer. By using high-permeability grain-oriented silicon steel sheets, all-copper windings, and a fully sealed corrugated oil tank structure, this product ensures low energy loss, stable operation, long service life, and maintenance-free performance. It is widely used in power grid distribution systems, industrial, commercial, and public buildings, serving as a cost-effective energy-saving transformer for both new construction and renovation projects.
II. Main Technical Specifications (Customizable)
• Rated Power: 10 kVA-5000 kVA • Rated Voltage: 10 kV ±2 × 2.5%/0.4 kV • Phase Configuration: Three-phase • Connection Group: Dyn11/Yyn0 • Cooling Method: Natural oil circulation self-cooling ONAN • Insulation Class: Class A • Voltage Impedance: 4%–6% (depends on power) • Protection Level: IP54 • Energy Efficiency: Energy-saving and economical • Operating Conditions: Outdoor temperatures from -25°C to +40°C
III. Key Features
1. Fully sealed structure, maintenance-free. The sealed corrugated oil tank design effectively isolates air and moisture, preventing oxidation and aging of the insulating oil. This ensures long-term operation without maintenance and oil leakage, significantly reducing labor costs.
2. Excellent short-circuit resistance: fully copper windings combined with a robust support structure provide exceptional mechanical strength, effectively withstanding sudden voltage surges, ensuring safe and stable operation.
3. Low noise and vibration are achieved by optimizing the core structure and lamination process, effectively reducing magnetic hysteresis losses and vibration noise. This makes it suitable for noise-sensitive areas such as residential areas, schools, and hospitals.
4. High environmental adaptability allows installation in various conditions, including open spaces, container substations, and platforms. It is resistant to extreme temperatures, moisture, and dust, making it suitable for operation in diverse and challenging environments.
5. High cost-performance ratio, wide range of applications, ensuring a balance between energy efficiency and cost. It is an economically advantageous choice for new projects, power grid upgrades, and industrial and commercial power distribution.
IV. Application scenarios
• New construction and renovation projects for urban and rural power grids • Industrial parks, factories, mines, and enterprise distribution centers • Residential complexes, shopping malls, hotels, and office buildings • Public buildings, including schools, hospitals, train stations, and municipal facilities • Box-type substations and outdoor distribution systems • Various distribution network projects requiring energy efficiency and reliability within moderate budgets. Could you provide comparative brief versions of the S20/S22/S23 standards for direct use in documentation?
