The structure characteristics of dry type transformer1

Dry type transformer is a transformer, a kind of common types of local lighting, is widely used in high-rise buildings, wharf, mechanical equipment, etc. The structure characteristics of dry type transformer is very important for users, is a must to master the knowledge of the following project is to introduce the structure characteristics of dry type transformer.

the structure characteristics of dry type transformer:

1 safety, fire prevention, no pollution, can be run directly in the center of the load;

2 USES the domestic advanced technology, high mechanical strength, anti-short circuit ability, partial discharge is small, good thermal stability, high reliability, long service life.

3 low loss, low noise, energy saving effect is obvious, free maintenance;

4 good heat dissipation performance, load capacity, forced air cooling can improve the capacity of the operation;

5 moistureproof performance is good, adapt to the high humidity and other harsh environment;

6 dry type transformer can be equipped with perfect temperature detection and protection system. Adopt intelligent signal control system, can automatically detect and display circuit three-phase winding their working temperature, can automatically start and stop the fan, and has the functions such as alarm and trip set;

7 small volume, light weight, covers an area of less space, low cost of installation. Core for

dry isolation transformer is made of high quality cold rolled grain oriented silicon steel sheet, iron core silicon steel sheet USES 45 degrees of inclined seam, the magnetic flux through in the direction of the silicon steel sheet joints.

winding form

(1) coil;

2 epoxy resin and quartz sand filling;

(3) glass fiber reinforced epoxy resin casting ( The thin insulation structure) ;

(4) more strands of glass epoxy resin impregnated winding type ( Use 3 more commonly, because it can effectively prevent casting resin crack, improve the reliability of the equipment) 。

high voltage winding

generally USES multilayer cylindrical or multilayer sectional structure.

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key words: thermal resistance, thermocouple, thermal resistance, platinum resistance, PT100, PT1000, pressure sensor and digital temperature sensor