Product Brief:

A Dry-Type Transformer refers to a transformer whose core and winding are not immersed in insulating oil. The cooling methods are divided into natural air cooling and forced air cooling. Dry-type power transformer are widely used in local lighting, high-rise buildings, airports, docks, etc. The transformers we saw at the entrance of the village when we were young were dry-type transformers.

The three-phase transformer is one of the commonly used equipment in the power system. It has many unique characteristics that make it perform well in various application scenarios. The following are the main features of the three-phase dry-type transformer: 1. Oil-free design High safety: Since transformer oil is not used, there is no risk of oil leakage, fire and explosion in the three-phase dry-type transformer. It is particularly suitable for places with high requirements for fire and explosion prevention, such as high-rise buildings, underground facilities, hospitals, schools, etc. Excellent environmental performance: No liquid insulating medium is used, which will not pollute the soil and water sources and is environmentally friendly. 2. Excellent insulation performance Solid insulation materials: Mainly use solid insulation materials such as epoxy resin, insulating cardboard, cable paper, etc. These materials have good insulation performance and mechanical strength, and can effectively protect the windings and cores. Heat resistance and moisture resistance: Epoxy resin cast dry-type transformers have high heat resistance and moisture resistance, and can operate stably in harsh environments. 3. Various cooling methods Natural cooling: Cooling relies on natural convection of air, which is suitable for transformers with small capacity or low load operation. Forced air cooling: equipped with cooling fans, which improve cooling efficiency through forced air convection, suitable for transformers with large capacity or high load. Temperature control system: Modern three-phase dry-type transformers are usually equipped with intelligent temperature control systems, which can automatically adjust the operation of cooling fans according to load and ambient temperature to ensure that the transformer operates within a safe temperature range. 4. Large volume and weight Structural characteristics: Compared with oil-immersed transformers of the same capacity, three-phase dry-type transformers are usually larger and heavier. This is because the insulation performance of solid insulating materials is not as good as that of liquid insulating media, and more materials are required to achieve the same insulation effect. Installation requirements: Due to the large volume and weight, space and load-bearing requirements need to be considered during installation, and a more solid foundation and supporting structure are usually required. 5. Low maintenance cost No liquid medium: No need to replace insulating oil regularly, reducing maintenance workload and cost. Simple maintenance: The structure of dry-type transformers is relatively simple, and maintenance work mainly focuses on the inspection and cleaning of windings, cores and cooling systems. 6. Wide range of applications High-rise buildings: Installed inside buildings, it can effectively reduce fire risks while meeting the power supply needs of high-rise buildings. Underground facilities: Such as subway stations, underground parking lots, etc., the fireproof and explosion-proof characteristics of dry-type transformers make them an ideal choice. Hospitals and schools: These places have high requirements for safety and reliability, and dry-type transformers can provide a stable power supply while ensuring environmental safety. Data centers: For data centers with strict fire protection and environmental protection requirements, dry-type transformers are the preferred equipment. 7. Low noise level Low noise design: Modern three-phase dry-type transformers focus on reducing operating noise in design, and reduce magnetostriction and electromagnetic noise by optimizing the core structure and winding arrangement. Noise control: Equipped with low-noise cooling fans to further reduce operating noise, suitable for noise-sensitive places. 8. Strong overload capacity High thermal stability: Due to the use of high-performance insulation materials, three-phase dry-type transformers have strong thermal stability when overloaded and can withstand higher loads in a short time. Short-term overload: It can withstand more than 1.5 times overload in a short time, suitable for occasions that require short-term high-load operation. 9. Intelligent monitoring and protection Intelligent monitoring system: Modern three-phase dry-type transformers are usually equipped with intelligent monitoring systems that can monitor the operating status of the transformer in real time, including parameters such as temperature, load, and voltage. Protection function: It has multiple protection functions such as overload protection, short circuit protection, and overheat protection to ensure that the transformer can automatically cut off the power supply under abnormal conditions to protect the safety of equipment and personnel. Summary: Three-phase dry-type transformers have been widely used in power systems due to their oil-free design, excellent insulation performance, diversified cooling methods, low maintenance costs, wide range of applications, low noise levels, strong overload capacity, intelligent monitoring and protection, etc. Although its manufacturing cost and price are relatively high, dry-type transformers are undoubtedly an ideal choice in situations where safety and environmental protection are required.

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