Components of oil immersed power transformer

The iron core and winding are immersed in the oil tank filled with transformer oil, and the end points of each winding are led to the outside of the oil tank through insulating bushings, so as to connect with the external lines. Therefore,Oil immersed power transformer is mainly composed of five parts: 1. iron core; 2. Winding with insulation; 3. Transformer oil; 4. Oil tank; 5. Insulating sleeve.

Iron core: The iron core of the transformer is the magnetic circuit of the transformer. Since the magnetic flux in the transformer core is an alternating magnetic flux, in order to reduce eddy current loss, the transformer core is laminated with electrical steel sheets.

Transformer Core

Winding: according to the arrangement method of windings in the iron core, transformers can be divided into iron core type and iron shell type. The basic types of transformer windings are the same core type and overlapping type. The iron core type transformer is commonly used with the same core type winding, and the iron shell type transformer is commonly used with the overlapping type winding.

3 Phase Transformer

Transformer oil: transformer oil has dual functions: 1. It can enhance insulation; 2. Heat is generated in the iron core and winding due to loss. The heat is transferred to the surface of the iron box through the convection of oil after heating, and then spread around the iron box surface.

transformer oil

Oil tank: the purpose of oil tank is to reduce the contact area between oil and air, so as to reduce the oxidation rate of oil and the water intrusion into the transformer;

Photobank 58

Insulating sleeve: the insulating sleeve is composed of central conductive copper rod, porcelain bushing, Transformer Accessories,Transformer Breather,Pointer Oil Level Gauge,Electric Contact Pressure Relief Valve.etc