In various industrial applications, maintaining consistent power supply under high ambient temperatures is a significant challenge. Traditional oil-immersed transformers often struggle in these conditions, operating at only 81% load under an ambient temperature of 40°C. This limitation poses a risk of high-temperature tripping, potentially leading to power outages and operational inefficiencies. High-temperature-resistant products, on the other hand, can operate at 100% full load under the same conditions, ensuring the safety and reliability of power supply during periods of high demand, particularly in the summer months.
High-temperature resistant liquid-filled transformers provide a robust solution for industries requiring consistent power under high-temperature conditions. These transformers are designed to operate at full load without the risk of tripping, ensuring continuous power supply. The use of high-temperature resistant liquid enhances their performance, providing superior oxidation resistance and a slower aging rate compared to conventional mineral oil. Additionally, the coils are insulated with NOMEX insulation paper, which offers stable mechanical and electrical performance under high temperatures and has a long lifespan.
The benefits of the distribution transformer
Conventional oil-immersed transformers typically use mineral oil, which requires testing and filtration every two to three years. In comparison, high-temperature resistant liquids exhibit superior oxidation resistance and age more slowly, necessitating testing only once every ten years. The coils in these transformers are insulated with unique NOMEX® insulation paper, providing more stable mechanical and electrical performance under high temperatures. This insulation material has a long lifespan, even at elevated temperatures.
High-temperature resistant transformers are designed with sustainability in mind. The materials used can be recycled and reused at the end of the transformer's service life, aligning with environmental protection goals. NOMEX insulation paper is biodegradable, and the high temperature-resistant oil operates well below its temperature resistance level, making it recyclable after proper treatment. The treated waste can be decomposed by soil microorganisms without toxicity, preventing long-term environmental pollution.
For industries such as cement, steel, coal, and papermaking, high-temperature-resistant products are designed to handle fluctuating and unstable loads. The insulation system in these transformers remains intact under these conditions, ensuring safe and reliable long-term operation.
4. FR3 oil
Using natural ester insulating oil, specially designed to cope with the heat, with excellent high heat resistance, fire prevention ability, for the safe operation of power equipment escort.
Varelen transformers are renowned for their reliable insulation technology. The development process includes extensive research, from initial two-dimensional electric field simulations and three-dimensional electric field measurements to theoretical analysis and simulated experiments on various insulation aspects. This thorough verification process ensures the reliability of transformer insulation, enhancing their safety and performance in high-temperature conditions.
Varelen dedicates specialized efforts to calculating and measuring transformer leakage magnetic fields. This research encompasses shielding structures for leakage magnetic fields, calculations for transformer dynamics and thermal stability, and improvements in these areas. Accurate calculations and reduced stray losses contribute to enhanced transformer dynamic stability, making Varelen transformers highly efficient and reliable.
Collaborating with numerous universities, Varelen has developed programs for calculating coil temperature fields. These programs consider loss distribution in coils, including resistive losses, eddy current losses, and circulating losses between parallel conductors, as well as flow field cooling conditions. This precise analysis enables effective control of hotspot temperature rises, significantly extending the transformer’s lifespan.
During the design phase, Varelen conducts numerical analysis of electric field strengths at various locations, ensuring strict control over local discharges. Adherence to manufacturing quality, reliable processing methods, and reasonable operating techniques further control local discharges, enhancing the overall reliability of Varelen transformers.
High-temperature resistant transformers are designed with energy-saving and environmental protection in mind. At the end of their service life, the materials used in these transformers can be recycled and reused, supporting sustainable development. NOMEX insulation paper biodegrades after its service life, and the high-temperature resistant oil can be treated and recycled. The treated waste decomposes through soil microorganisms without toxicity, preventing long-term environmental pollution.
Varelen's high-temperature resistant oil-immersed power transformers offer numerous advantages, including full load operation under high temperatures, reduced maintenance costs, energy savings, and enhanced environmental protection. Their robust design ensures safety and reliability, even under fluctuating and unstable loads. By choosing Varelen transformers, customers benefit from advanced insulation technology, precise temperature control, and reduced local discharge, making them a superior choice for various industrial applications.
In this hot summer, Huarui Eneng transformer is undoubtedly your best power solution partner. Our equipment performs particularly well in extreme weather conditions, ensuring the stable operation of the power system and constantly innovating to provide customers with safer and more reliable products and services.
