What does dry type transformer mean?

dry type transformers are often used in local lighting, in high-rise buildings, at airports, in terminal CNC machines and elsewhere. Simply put, a dry type transformer refers to a transformer whose iron cores and windings are not immersed in insulating oil.

What are the structural characteristics of dry type transformers?

What are the internal parts of the dry type transformer?

What types of dry type transformers are there?

What are the structural characteristics of dry type transformers?

Since dry type transformers have the advantages of high short circuit resistance, low maintenance, high operational efficiency, small size and low noise development. Since they can fit in the  in places with high-performance requirements such as fire protection and explosion protection.

1. It is safe, fire-resistant, non-polluting and can be operated directly in the load centre;

2. Using domestic advanced technology, high mechanical strength, strong short circuit resistance, low partial discharge, good thermal stability, high reliability and long service life;

3. Low loss, low noise, obvious energy saving effect, maintenance-free;

4. Good heat dissipation performance, strong overload capacity and capacity operation can be increased in case of forced air cooling;

5. Good moisture-resistant performance, adapts to high humidity and other harsh environments;

6. dry type transformers can be equipped with a complete temperature detection and protection system. With an intelligent signal temperature control system, it can automatically detect and display the respective operating temperatures of the three-phase developments, automatically start and stop the fan and have function settings such as alarms and triggers;

7. Low size, low weight, less space and low installation costs.

What are the internal parts of the dry type transformer?

Iron

The high-quality cold rolled silicon steel sheet is used, and the iron core silicon steel sheet assumes a completely curved seam of 45 degree, so that the magnetic flow runs along the seam direction of the silicon steel sheet.

Wrapping

winding;

fill and pour epoxy resin and quartz sand;

glass fibre reinforced epoxy resin (i.e. thin insulation structure);

Multi-stranded glass filament impregnated epoxy resin wrapping (generally used as it can effectively prevent casting resin tearing and improve equipment reliability).

High-voltage

Generally, assume multi-layer cylindrical or multi-layer segmented structure.

What types of dry type transformers are there?

1. Open dry type transformer: It is a frequently used form, its housing is in direct contact with the atmosphere and is suitable for relatively dry and clean interiors (at a 20-degree ambient temperature the relativ e humidity 85% should not exceed) There are two cooling methods: self-cooling and air cooling.

2. Closed dry type transformer: The enclosure is located in a closed enclosure and has no direct contact with the atmosphere (due to sealing and poor heat dissipation conditions it is mainly used for mining and belongs to the explosion-protected type).

3. dry type transformer casting: use epoxide resin or any other waste resin as main insulation. It has a simple structure and a small volume suitable for transformers with lower capacity.

Zhejiang Zhegui Electric Co., Ltd has been focusing on the development and production of dry type transformers for several years. And it strives to offer every customer from all over the world a perfect service.