oil immersed power transformer

1.Product Introduction 

The 10kV S18 series transformer is a Class I energy-efficient ultra-high efficiency distribution transformer compliant with National Standard GB 20052-2024. As one of the most energy-efficient standard oil-immersed transformers available, it is specifically designed for 10kV distribution networks. Featuring high-permeability oriented silicon steel sheets, optimized core structure, and fully sealed construction, this product delivers exceptional low-loss performance, minimal noise levels, high reliability, and extended service life. It serves as an ideal solution for new power grid projects, energy-saving retrofits, high-end industrial parks, and densely populated urban power supply areas.

2. Technical Specifications （customizable）

• Rated Voltage: 10kV±2×2.5%/0.4kV • Rated Frequency: 50Hz • Connection Group: Dyn11 • Cooling Method: ONAN oil-immersed self-cooling • Capacity Range: 30kVA to 2500kVA • Impedance Voltage: 4% • Insulation Class: Class A • Protective Structure: Fully sealed corrugated oil tank • Operating Temperature: -25℃ to +40℃ 

3. Key Features 

1. Tier 1 energy efficiency with ultra-low losses. No-load losses are significantly lower than S11 and S13 standards, delivering exceptional energy savings and reduced long-term operational costs.

Optimized ultra-low noise core structure with uniform magnetic circuit and low operating noise, suitable for quiet environments such as residential areas, schools, and hospitals.

Fully sealed, maintenance-free design without oil storage tank, ensuring transformer oil remains isolated from air to prevent oxidation and moisture absorption, eliminating the need for core lifting and routine maintenance.

The coil features strong short-circuit resistance, high mechanical strength, and stable insulation, capable of withstanding grid surges and load fluctuations.

Features long service life, excellent heat dissipation, strong corrosion resistance, extended overall lifespan, low failure rate, and high cost-performance ratio.

Compact in size and flexible in installation, it can be applied to various scenarios such as outdoor platforms, distribution rooms, and box-type substations.

4. Application Scenarios 

• New construction and energy-efficient retrofitting projects for urban and rural power grids • Residential communities, schools, hospitals, commercial complexes, and office buildings • Power supply for factories, mines, industrial parks, and data centers • Municipal, water conservancy, transportation, and communication infrastructure • Box-type substations, photovoltaic/wind power systems, and temporary construction power supply