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Wuxi Jiade Transformer Co., Ltd.
Wuxi Jiade Transformer Co., Ltd. is China Custom Single Phase Transformer Manufacturers and Single Phase Isolation Transformer Suppliers with a long history and a certain scale. It is a high-tech enterprise specializing in the research and development, production, sales and service of transformers and reactors. Products are widely used in scientific research, petroleum, railways, chemicals, coal mines, industrial control systems, mechatronics devices, power electronic equipment, instrumentation, medical equipment, communication equipment, power monitoring and general electrical equipment and many other fields. We offer Single Phase Transformer.
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How is single-phase transformer oil vacuum filled? How to ensure the cleanliness and insulation performance of the oil?

At Wuxi Jiade Transformer Co., Ltd., we are well aware of the key role of transformer oil in transformer operation. It not only bears the dual responsibilities of insulation and cooling, but also directly affects the operating stability and safety of the transformer. Therefore, in the production process of single-phase transformers, we pay special attention to the vacuum oil filling treatment of transformer oil and the guarantee of oil cleanliness and insulation performance. The following is a detailed process of how our company performs vacuum oil filling treatment of single-phase transformer oil and ensures oil cleanliness and insulation performance:
Preliminary preparation:
Equipment preparation: We use the company's advanced equipment resources, including vacuum oil filter, precision oil filter, vacuum pump, etc., to ensure that all equipment is clean and free of debris, and connect the cooling water source required by the vacuum pump.
Material preparation: Prepare enough qualified new oil, and conduct chemical and electrical tests to ensure that the oil quality meets the standards. At the same time, prepare accessories such as oil drums, oil pipes, pipe joints, valves, vacuum gauges, etc.
Site layout: The site is equipped with sufficient lighting equipment and fire-fighting equipment to ensure safe operation.
Transformer preparation:
Work closely with the transformer manufacturer to clarify the construction date and implement relevant process measures, organizational measures and safety measures.
Transport the transformer to the designated location and carry out necessary inspections and preparations, such as draining oil, hanging covers, and body inspections.
Vacuum oil filling process:
Vacuuming: First, extract the air in the transformer tank to a certain vacuum degree (such as 1.3Kpa) and maintain it for a period of time (such as 30 minutes) to remove moisture and gas inside the transformer.
Oil filling: While maintaining the vacuum, slowly inject qualified transformer oil into the bottom of the transformer tank through a vacuum oil filter. The oil filling speed needs to be controlled at 4-6 tons per hour to ensure that the oil level gradually rises until it approaches the top of the tank (such as stopping when it is 100-150mm from the top of the tank).
Continue to vacuum: After the oil filling is completed, continue to vacuum, maintain the vacuum degree at ≤50Pa, and continue for a period of time (such as 6-8 hours) to ensure that the gas inside the transformer is completely discharged.
Subsequent processing:
Stop the vacuum pump, release the vacuum state, observe the oil level changes, and make necessary adjustments.
Continue to add oil to the transformer components (such as oil pillow, cooler, etc.) through the oil filter until the oil level reaches the standard position.
Let the transformer stand for at least 24 hours, and carefully check all parts of the transformer during this period to ensure that there are no abnormal conditions such as oil leakage and deformation.
Measures to ensure oil cleanliness and insulation performance
Oil quality selection:
Our company strictly selects high-quality and clean transformer oil to ensure that the oil quality meets national standards and industry requirements.
Regularly screen, decontaminate and replace transformer oil to ensure that the oil is clean and clean.
Filtration treatment:
Before oil filling, the transformer oil is filtered multiple times by vacuum oil filter and precision oil filter to remove impurities and moisture in the oil and improve the cleanliness and insulation performance of the oil.
During the filtration process, strictly control the filtration accuracy and temperature to ensure that the oil quality is not damaged.
Strict testing:
Chemical and electrical tests are carried out on the transformer oil, including the detection of indicators such as breakdown voltage, dielectric constant, and water content to ensure that the oil quality meets the standard requirements.
After the transformer is filled with oil, take another oil sample for testing to ensure that the oil quality remains in good condition inside the transformer.
Process control:
During the vacuum oil filling process, strictly control the speed, time and vacuum degree of vacuum and oil filling to ensure that the gas inside the transformer is completely discharged and the oil quality is fully guaranteed.
Strengthen the training and supervision of operators to ensure that the entire oil filling process is carried out in strict accordance with the process regulations.
Wuxi Jiade Transformer Co., Ltd. has accumulated rich experience and technical advantages in single-phase transformer oil vacuum oil filling treatment and oil cleanliness and insulation performance assurance with its strong R&D team and advanced production equipment. We are always customer-oriented and committed to providing customers with high-quality and high-performance transformer products.