A simple core transformer consists of an iron core made of soft magnetic material and two coils with different numbers of turns wrapped around the iron core.
A transformer is a device that converts alternating voltage, current, and impedance. When AC current flows in the primary coil, AC magnetic flux is generated in the iron core and voltage is induced in the secondary coil. A transformer is a relatively static electrical device consisting of two or more windings wound on the same iron core. The windings are connected to each other by alternating magnetic flux.
According to dry-type transformer manufacturers, power transformers should be used for economical transmission, rational distribution and safe use of the electric energy generated by power plants. It is safe, fireproof and pollution-free, and can be operated directly in the load center; it adopts domestic advanced technology, has high mechanical strength, strong short-circuit resistance, small partial discharge, good thermal stability, high reliability and long service life. Low loss, low noise, obvious energy saving effect, and maintenance-free.
The main insulation of dry-type transformers often uses the same insulation structural components as oil-immersed transformers: insulating paper tubes, corner rings, component partitions, etc. When designing the insulation of dry-type transformers, in addition to ensuring the insulation strength, special attention should also be paid to ensuring that there are sufficient air cooling ducts between coils. And pay attention to the placement of insulating parts to ensure that air can smoothly contact the coil.
The safe operation and service life of dry-type transformers depend to a large extent on the safety and reliability of the transformer winding insulation. Insulation damage caused by the winding temperature exceeding the insulation tolerance temperature is one of the main reasons why dry-type transformers cannot operate normally. Therefore, monitoring and alarm control of the transformer operating temperature is very important.
dry-type transformer
