This ONAF cooling oil-immersed power transformer adopts low-loss high-permeability silicon steel core and high-temperature resistant composite insulating winding. Equipped with professional forced air cooling radiator assembly, it accelerates the internal insulating oil circulation and quickly takes away accumulated operating heat. The whole machine adopts fully sealed vacuum oil injection process, with excellent tightness and insulation performance. It can stably operate under long-term full-load, peak load and high-temperature ambient conditions, effectively solving the heat accumulation problem of conventional oil-immersed transformers in high-intensity power supply scenarios.
Product Details
ONAF professional cooling system
Matched with high-power axial flow fans and enhanced heat dissipation fins, it realizes forced air cooling, greatly improving heat exchange efficiency and avoiding high-temperature derating operation.
High-temperature resistant insulating structure
Adopts new composite insulating materials with high thermal stability, which can withstand long-term high-temperature operation and delay insulation aging.
Optimized internal oil circuit
The internal oil flow channel is reasonably optimized to make the insulating oil circulate evenly and rapidly, ensuring balanced heat dissipation of all parts of the transformer.
Anti-vibration and noise reduction structure
Precision core stacking and fixed damping design reduce operating vibration and wind noise of the cooling system, achieving low-noise operation.
Product Advantages
Super efficient heat dissipation
ONAF forced cooling mode breaks the heat dissipation limit of traditional self-cooling transformers, with 30% higher heat dissipation efficiency, supporting long-term peak load operation.
Strong overload resistance
Under high-temperature environment and sudden load increase, the equipment will not generate excessive heat, with strong impact resistance and operation stability.
Flexible load adaptability
It can adapt to fluctuating peak power consumption of industrial equipment and power grid impact load, with wide operating condition coverage.
Extended service life
Effective temperature control reduces insulation aging rate and equipment loss, significantly prolonging the overall service life of the transformer.
Company Strength

1.Complete Production System: We own a modern standardized manufacturing base with a full industrial process, covering core processing, precision coil winding, vacuum drying, vacuum oil injection sealing and strict finished product testing. The standardized production flow ensures stable and consistent product quality.
2.Strong Production Capacity: With an annual production capacity of 5 million KVA, the factory supports batch production and personalized customization of ONAF cooling oil-immersed transformers of various voltage levels and capacities, meeting bulk orders and project customized demands.
3.Strict Quality Inspection: Equipped with complete professional testing equipment, all transformers pass national routine tests, type tests and special performance verification, fully complying with international power equipment quality standards.
4.Professional R&D Strength: We have an independent professional R&D team, continuously optimizing ONAF cooling structure, energy-saving design and high-load adaptive performance to upgrade product competitiveness.
5.One-stop Global Service: We provide integrated services including technical solution customization, OEM manufacturing, on-site technical guidance and after-sales maintenance, serving global power engineering and industrial power supply projects.
FAQ
Q: What is the essential difference between ONAF Cooling Oil-Immersed Power Transformer and ordinary ONAN transformers?
A: The core difference lies in the cooling method. The ONAF Cooling Oil-Immersed Power Transformer adopts forced air auxiliary cooling on the basis of natural oil circulation, with faster heat dissipation speed and stronger overload capacity. It is suitable for high-temperature and high-load intensive scenarios, while ordinary ONAN self-cooling transformers are only applicable for conventional steady-load operation.
Q: What scenarios is the ONAF Cooling Oil-Immersed Power Transformer mainly suitable for?
A: The ONAF Cooling Oil-Immersed Power Transformer is ideal for high-temperature workshops, peak-load industrial parks, regional power grid hub stations, large new energy power stations and other scenarios with high heat generation and intensive power consumption. It can solve the heat dissipation bottleneck of conventional transformers in high-intensity power supply environments.
Q: Does the ONAF cooling system increase daily maintenance difficulty?
A: No. The cooling fan assembly of the ONAF Cooling Oil-Immersed Power Transformer adopts modular design, which is easy to disassemble and maintain. With regular dust cleaning and fan operation inspection, the system can operate stably for a long time without complex maintenance procedures.
Hot Tags: onaf cooling oil-immersed power transformer, China onaf cooling oil-immersed power transformer manufacturers, suppliers, factory, 2000 kva oil filled transformer, 3 phase oil transformer, 750 kva oil filled transformer, amorphous core type distribution transformer, Oil Immersed Hermetically Sealed Type Transformer, transformer oil immersed type


