10kV Three-phase oil-immersed distribution transformer in China

The 10kV Three-phase Oil-immersed Low-loss Energy-saving Distribution Transformer, supplied by a professional China Manufacturer with flexible OEM/ODM customization, is a core component of modern power distribution networks, engineered for superior efficiency and reliability. Utilizing advanced core materials and an optimized design, it significantly reduces no-load and load losses compared to standard models. Custom specifications can be realized through our OEM/ODM service.

This transformer delivers substantial energy savings and lower operating costs over its lifespan, making it an economically smart and environmentally responsible choice for utilities and industries aiming to enhance the sustainability of their power infrastructure.

Product Showcase Video

Product model

• S: Three-phase Oil-immersed
• 11: Performance Level
• M: Fully Sealed
• □: Rated Capacity (kVA)
• □: Voltage Class (kV)

Conditions of use

• Altitude: No more than 1000m, indoor or outdoor.
• Ambient temperature: The highest ambient air temperature is +40℃, the highest daily average temperature is +30℃
• maximum annual average temperature is +20℃, and the minimum temperature is -25℃.
• Transformers can be provided to operate under special conditions according to user requirements.

Key Technical Features

• Advanced Low-Loss Core Design:Constructed with high-grade, low-loss amorphous alloy or high-permeability silicon steel core, which dramatically reduces no-load (core) losses, the primary source of energy waste in transformers.
• Optimized Energy Efficiency:Meets or exceeds stringent energy efficiency standards (such as IE3, IE4 or Chinese GB Standard). Its design minimizes total ownership cost by prioritizing high performance at both full and partial loads.
• Robust Oil-Immersed Construction:The time-tested oil-immersed design provides excellent insulation and heat dissipation, ensuring stable operation, a long service life, and reliable performance under fluctuating load conditions.
• Reduced Operating Costs:The significant reduction in energy losses translates directly into lower electricity bills, offering a rapid return on investment and a smaller carbon footprint.
• Durable and Reliable Performance:Features a fully sealed tank to prevent oil oxidation, corrugated radiators for effective cooling, and high-quality components to ensure minimal maintenance and maximum uptime.

Performance Parameters

Note: for transformers rated at 500 kva and below, the load loss values above the diagonal lines in the table apply to dyn 11 or yzn 11 connection groups, and the load loss values below the diagonal lines apply to yyno connection groups.

Typical Application Scenarios

• Public Utility Grids: Widely used in 10kV distribution substations for stepping down voltage to supply residential communities, commercial districts, and public facilities.
• Industrial Power Supply: Serves as a dedicated power source for factories, manufacturing plants, and industrial parks where continuous operation and energy cost control are critical.
• Renewable Energy Integration: Functions as a grid-connection point for distributed generation sources like solar and wind farms, where high efficiency is crucial for maximizing energy yield.
• Infrastructure Projects: Provides reliable power for key infrastructure such as water pumping stations, railway systems, and airports, ensuring operational stability and energy savings.

Why choose Rockwill?

• 20+ years experienced China Manufacturer, full production chain, OEM/ODM available
• IEC / ANSI / IEEE certified, third-party lab verified, ISO management system
• Digital quality control, stable performance & competitive cost
• Global service network across 100+ countries, one-stop grid solution & technical support