About dry-type transformers

Transformers work on the principle of electromagnetic induction. The transformer body is mainly composed of winding and iron core. When working, the winding is the "electrical" path, while the core is the "magnetic" path. After the input of electric energy on the primary side, because of its alternation, an alternating magnetic field is generated in the iron core (that is, from electric energy to magnetic field); Due to the turn chain (penetration), the magnetic force line of the secondary winding is constantly changing, so the secondary electromotive force is induced, when the external circuit is connected, the output of electrical energy (that is, the magnetic field energy is converted into electrical energy), this "electricity one magnetic one. The conversion process of "electricity" is based on the principle of electromagnetic induction, and this energy conversion process is the working process of the transformer. Characteristics of dry transformer
1. Safe, flame-proof, explosion-proof, pollution-free, can be directly installed in the load center.
2. Maintenance-free, low overall operating cost.
3. Good moisture-proof performance, it can operate normally under 100% humidity, and can be put into operation without pre-drying after shutdown.
4. Low loss, low local discharge, low noise, strong heat dissipation capacity, forced air cooling conditions can be 150% rated load operation.
5. Equipped with a perfect temperature protection control system to provide reliable guarantee for the safe operation of the transformer.
6. Small size, light weight, less space, low installation cost

Lack of dry transformer
1. Under the same capacity condition, the price of dry change is expensive, about 2 times that of oil change;
2. The application voltage level of dry transformer is limited, the current dry transformer voltage level has reached 35KV, and the highest voltage has reached 110KV;
3. Generally used in the house, when used outdoors, must be equipped with a higher level of protection cover;
4. For the molded coil, when it is damaged, it is often scrapped and difficult to repair.