Temperature setting of dry-type transformer

Dry-type transformer now for different high-rise buildings, terminals, stations, airports and other places with lighting needs to play a very critical role. Now the industry is very concerned about the temperature of dry-type transformers and other information. Because the temperature of dry-type transformer can be said to have a direct impact on the operation and efficiency of the whole equipment.

　　

Dry-type transformer introduction: dry-type transformer is widely used in local lighting, high-rise buildings, airports, terminals CNC mechanical equipment and other places, simply said that dry-type transformer refers to the core and winding is not immersed in insulating oil in the transformer. Cooling methods are divided into Natural Air Cooling (AN) and forced air cooling (AF) . When the air is cooled naturally, the transformer can run continuously for a long time under the rated capacity. When forced air cooling, the output capacity of the transformer can be increased by 50% . The utility model is suitable for intermittent overload operation or emergency overload operation, and should not be in continuous overload operation for a long time due to the large increase of load loss and impedance voltage.

　　Structural characteristics

　　1. SAFE, fire-proof, no pollution, can be directly run in the load center;
2. Using domestic advanced technology, high mechanical strength, short-circuit resistance, small partial discharge, good thermal stability, high reliability, Long Service Life;
3. Low loss, low noise, energy-saving effect, maintenance-free;
4. Good heat dissipation, strong over-load capacity, forced air cooling can improve capacity operation.
5. Good moisture-proof performance, adapt to high humidity and other harsh environment operation;
6. The 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 windings, Start and stop the Fan, alarm, trip and other functions. Small volume, light weight, less space, low installation cost.

　　Iron core

　　The dry-type isolation transformer adopts high quality cold-rolled grain-oriented silicon steel sheet, and the iron-core silicon steel sheet adopts 45 degree all-inclined Joint, which makes the magnetic flux pass along the joint direction of the silicon steel sheet.

　　Winding form

　　Winding; Epoxy Filling with Quartz Sand; glass fiber reinforced epoxy Casting (I. E. Thin Insulation) ; Multi-strand glass filament impregnated epoxy winding type (generally used 3, because it can effectively prevent casting resin cracking, improve the reliability of equipment) .

　　High Voltage winding

　　Generally, multi-layer cylinder structure or multi-layer segmented structure is adopted.

　　1. The new generation of dry-type transformers will not only be more flexible in their temperature regulation, but also have lower relative losses. In addition, the overload capacity is also very powerful.
2. The next generation of dry type transformers are safer to operate than conventional equipment. In addition, the energy-saving effect is very obvious, in the late maintenance is also more convenient.
3, the new generation of dry-type transformer using the most advanced technology, has a strong anti-short-circuit performance. For thermal stability is better, in the partial discharge time is very small.
4, in addition, now on the market brand dry-type transformer also has a very good moisture-proof performance, high reliability, the use of time has been improved.
5. Today, the most advanced dry-type transformer temperature detection for traditional equipment, not only has a more perfect set and technical indicators, the relevant protection system has also been improved. With intelligent start and stop, but also for different failures and abnormal phenomena have an alarm function and other settings.
6. The various types of dry-type transformers on the market are not only light in volume and weight, but also better than in installation costs and procedures.

　　Now there are different types of dry-type transformer on the market, we only understand the characteristics and performance of each equipment, to better grasp the dry-type transformer temperature regulation.

　　For now on the market in general dry-type transformer temperature, different industries have different standards. Usually, the dry-type transformer normal operation period usually reaches 95 degrees, has been considered as the higher dry-type transformer temperature standard. Usually low-voltage equipment for the setting of temperature standards, usually do not exceed 60 degrees.

　　It is very important to know how to set the temperature of dry-type transformer. Because if the setting temperature is too high, it will lead to dry-type transformer equipment accelerated insulation aging and so on, thus reducing the use of long-term equipment time. The above is our dry-type transformer temperature summary of the relevant knowledge. A good piece of equipment also needs to be operated correctly. For more information on dry-type transformer temperature regulation, please stay tuned to our website.