In the process of operation, the dry-type transformer is also constantly improving its use efficiency. The dry-type transformer is also constantly heating during its operation and work. The body heat of the dry-type transformer is also constantly increasing. At this time, when the heat reaches a certain level, it needs to be cooled. However, the cooling mode of dry-type transformer is different from the main mode, and the transformer manufacturer shall make specific determination according to the structure and model of dry-type transformer. What are the cooling modes and characteristics of common dry-type transformers?
What are the cooling methods of dry-type transformer:
1. Open type: it is a common way. Its body contacts with the atmosphere, and it is suitable for dry and clean rooms (when the working temperature is 20 degrees, the relative humidity cannot exceed 85%). Generally, there are two cooling ways: gas self cooling and air cooling.
2. Closed type: the device is located in a closed enclosure and does not contact the atmosphere (because of poor sealing and heat discharge conditions, it is mainly used in mines and belongs to explosion-proof type).
3. Pouring type: epoxy resin or other resins are poured as the main insulation, which is compact in structure and small in size, and suitable for dry type transformers with small capacity.
Cooling mode characteristics of dry-type transformer:
1. Safe, fireproof, zero pollution, can directly operate in the load center;
2. It adopts domestic advanced technology, with high impact toughness, strong short-circuit resistance, small partial discharge, good thermal stability, high stability and durability;
3. Low loss, low noise, remarkable energy-saving effect, maintenance free;
4. Good thermal conductivity, strong overload capacity, can increase the volume of operation when forced air cooling;
5. Good moisture-proof performance, suitable for operation in high humidity and other extreme environments;
6. The dry-type transformer can be equipped with a perfect temperature measurement and protection system. The intelligent signal temperature control system is adopted, which can automatically identify and indicate the respective operating temperature of the three-phase winding, automatically start and stop the fan, and has such function settings as reporting and tripping;
7. Small size, light weight, less floor space and low installation cost.
HENGFENGSHUAI ELECTRIC, is an electrical enterprise with transmission and distribution industry as its main business, integrating product research and development, manufacturing and trade. Designated suppliers for the world's top 500 enterprises .Its main products include power transformers, medium and low voltage switchgear, distribution panel ,circuit breakers, transmission tower ,Cable and other power distribution equipment .The group has five department: Transformer department, Panel department, power transmission tower department, cable department and electrical engineering department. HENGFENGSHUAI ELECTRIC, has been working hard to provide the best transmission, distribution solutions for users all over the world.【WhatsApp：+86158 5325 2696（Jack） hfs@hengfengshuai.com https://www.hengfengshuai.com 】
