
Oil-Immersed Transformer Solutions for Power Systems
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Oil-Immersed Transformers Overview
Huachen oil-immersed transformers use transformer oil as the primary insulation and cooling medium, supporting stable heat dissipation and reliable electrical insulation. The product range is designed for dependable operation with low loss, low noise and strong mechanical performance.
Different series are available for distribution networks, industrial power systems, substations and renewable energy projects. Optimized core, winding and structural designs help improve operating stability and energy efficiency under different load conditions. Multiple voltage levels and capacity options allow the transformers to meet the requirements of both distribution and high-voltage power applications. Huachen also provides dedicated transformer solutions for wind, solar and energy storage systems.
Product Range
Core Functional Features of Oil-Immersed Transformers
Efficient Oil Insulation and Cooling
Transformer oil provides both electrical insulation and heat transfer within the transformer. Properly designed oil circulation and cooling structures help maintain stable operating temperatures under continuous service.
Low-Loss Energy-Saving Design
Huachen offers multiple energy-efficient oil-immersed transformer series, including S13, S18, S20 and S22. Optimized magnetic cores, winding structures and manufacturing processes help reduce unnecessary electrical losses.
Strong Short-Circuit Resistance
Reinforced core clamping and winding structures improve mechanical stability under electrical stress. This is especially important for medium- and high-voltage transformers operating in demanding power networks.
Low-Noise and Stable Operation
Optimized core and coil structures help control vibration and operating noise. The result is stable transformer performance for utility, industrial and distribution applications.
Oil-Immersed Transformer Applications
Huachen oil-immersed transformers serve a wide range of power distribution and transmission applications. Different transformer series can be selected according to voltage level, load conditions and project requirements.

Urban and Rural Power Distribution
S13, S18, S20 and S22 oil-immersed distribution transformers provide solutions for urban and rural distribution networks where reliable and continuous power supply is required. Their energy-efficient designs help reduce power losses during long-term operation. Different series can be selected according to local grid conditions, capacity requirements and distribution needs.
Wind, Solar and Energy Storage Projects
Huachen also provides specialized oil-immersed transformer products for renewable energy systems, including offshore wind transformers, new energy transformers and SF series dual-split transformers for photovoltaic and energy storage projects. These products support power conversion and grid connection in renewable energy systems. Dedicated transformer configurations can be selected according to project voltage levels, system layouts and operating requirements.


Industrial Power Systems
Oil-immersed transformers can support manufacturing facilities, industrial parks and other industrial distribution systems that require stable power transformation under continuous operating conditions. Their robust structure and reliable insulation help maintain stable operation under varying industrial loads. Multiple voltage and capacity options also allow the transformer configuration to match different production and facility requirements.
Why choose Huachen
Extensive Transformer Manufacturing Experience
Founded in 2007, Huachen has years of experience in the R&D and manufacturing of power transmission and distribution equipment. Its product portfolio covers distribution transformers, power transformers and renewable energy solutions for diverse project requirements.
Large-Scale Manufacturing Capability
Huachen operates three manufacturing bases covering approximately 333,000 m², supported by 12 modern production workshops. This manufacturing capacity enables the company to handle different transformer types, voltage levels and project requirements for customers worldwide.
Strong Quality Control and Certification
Huachen applies quality control throughout R&D, engineering, manufacturing and testing. The company has obtained ISO quality, environmental and occupational health and safety certifications, while its transformer products have also received PCCC and CQC energy-saving certifications.
Engineering Support for Different Projects
Huachen supports customers with transformer selection and project configuration based on drawings, electrical parameters and application requirements. Its product experience covers utility networks, industrial facilities, substations and renewable energy projects across different markets.
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FAQs
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Looking for the right oil-immersed transformer for your project? Share your required capacity, voltage level, application and installation conditions with Huachen. Our team can assist with product selection, technical configuration and quotation based on your project requirements.
