What Are The Characteristics Of Cast Resin Transformers?

Compared with oil-immersed transformers, dry-type transformers have no oil, so there are no problems such as fire accidents, explosions, and environmental pollution. Therefore, electrical equipment standards and technical specifications do not require dry-type transformers to be placed in independent rooms.

Dry-type transformer temperature controller.

The safe operation and service life of dry-type transformers depend on the reliability of the transformer winding insulation. An important reason is that the winding temperature exceeds the insulation resistance temperature and destroys the insulation layer, and the transformer becomes abnormal. Therefore, the measurement of the working temperature of the transformer and the working alarm are very important.

Safety protection methods for dry-type transformers.

Dry-type transformers can choose different peripherals according to the characteristics of the natural environment and the application of safety protection regulations. IP 23 safety shields are generally used to prevent solid dirt with a diameter of more than 12mm and animals such as mice, snakes, cats, birds, etc. from entering, and common faults such as short-circuit obstacles, power failures and other malignant changes occur, and provide a natural safety barrier for the induced generator. If the transformer needs to be set up externally, an IP 23 safety cover can be used. In addition to the safety protection function of IP 20, water droplets at line points and 60° angles can also be avoided. However, the outer packaging of IP 23 should reduce the water-cooling operation capacity of the transformer, and attention should be paid to reducing the working volume during use.

The water cooling method of dry-type transformers.

The water cooling methods of SCB10 dry-type transformers are divided into natural evaporative cooling (AN) and forced evaporative cooling (AF). When the air is cooled naturally, the transformer can operate continuously for a long time with the short-circuit capacity. If forced air cooling is adopted, the output capacity of the transformer will be increased by 50%. It can be used for intermittent overload driving or emergency safety accident overload driving. Due to the load loss during overload and the substantial increase in the characteristic impedance operating voltage, it is not economical to run under overload for a long time.