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What is a dry type transformer?

Release time: December 31, 2020 Source: Huaxing Xiaoyu Number of hits:

What is a dry type transformer? What is the function of dry type transformer? In what situations? Dry type transformer is widely used in local lighting, high-rise buildings, airports, and other places. Simply speaking, dry-type transformer refers to the transformer whose core and winding are not immersed in insulating oil. The cooling methods are divided into natural air cooling (an) and forced air cooling (AF). Under natural air cooling, the transformer can operate continuously for a long time under rated capacity. When forced air cooling, the output capacity of the transformer can be increased by 50%. It is suitable for intermittent overload operation or emergency overload operation; due to the large increase of load loss and impedance voltage during overload, it is in non economic operation state, so it should not be in continuous overload operation for a long time. The structural characteristics of dry-type transformer are: due to its strong short-circuit resistance, small maintenance workload, high operation efficiency, small volume and low noise, it is often used in places with high performance requirements such as fire prevention and explosion-proof. The characteristics of dry-type transformer are as follows:
1. It is safe, fireproof and pollution-free, and can operate directly in the load center;
2. It adopts domestic advanced technology, high mechanical strength, strong short circuit resistance, small partial discharge, good thermal stability, high reliability and long service life;
3. Low loss, low noise, obvious energy saving effect and maintenance free;
4. It has good heat dissipation performance and strong overload capacity. When forced air cooling, it can improve the capacity operation;
5. Good moisture-proof performance, suitable for operation in high humidity and other harsh environment;
6. Dry type transformer can be equipped with perfect temperature detection and protection system. The intelligent signal temperature control system can automatically detect and display the working temperature of the three-phase winding, start and stop the fan automatically, and set alarm and trip functions;
7. Small size, light weight, less space occupied and low installation cost. The above is about dry-type transformer related knowledge, you need to know more about transformer knowledge, please log in to the official website of Huaxing special transformer.