Detailed introduction of dry type transformer

GNEE Steel cast resin dry type transformer

Transformers are divided into dry-type transformers and oil-immersed transformers according to cooling methods. Next, the dry-type transformer manufacturer will introduce dry-type transformers to you in detail!

Dry-type transformer is a transformer that does not rely on natural air cooling of other cooling media. Simply put, dry-type transformer refers to a transformer whose core and windings are not immersed in insulating oil. Dry-type transformer manufacturers introduce that dry-type transformers are mainly composed of iron cores made of silicon steel sheets and coils cast by epoxy resin. Insulating cylinders are placed between high and low voltage coils to increase electrical insulation, and the coils are supported and restrained by pads. All connected fasteners have anti-loosening properties.

dry type distribution transformer

Dry-type transformer cooling methods are divided into natural air cooling (AN) and forced air cooling (AF). When naturally air-cooled, the transformer can operate continuously for a long time at rated capacity. When forced air cooling is used, the output capacity of the transformer can be increased by 50%.

The overload capacity of a dry-type transformer is related to the ambient temperature, the load condition before overload (initial load), the insulation heat dissipation condition of the transformer and the heating time constant, etc.

Functions of dry-type transformers: safe, fire-proof and non-polluting, can run directly in load centers; low loss, low noise, good energy saving effect; strong short-circuit resistance, small partial discharge, good thermal stability, high reliability and long service life; Good heat dissipation performance, strong overload capacity, and can increase capacity operation when forced air cooling; good moisture-proof performance, suitable for operation in high humidity and other harsh environments; small size, light weight, small footprint, and low installation cost; dry-type transformer Can be equipped with complete temperature detection and protection system. It adopts an intelligent signal temperature control system that can automatically detect and display the respective operating temperatures of the three-phase windings. It can automatically start and stop the fan, and has alarm, trip and other function settings.