What is the difference between a three-phase core transformer and a three-phase transformer group?

1, the structure is different: the iron core in the iron core transformer is the magnetic circuit part of the transformer. It is the medium of energy conversion, which converts the electric energy of the primary circuit into magnetic energy, and then converts it from its own magnetic energy into the electric energy of the secondary circuit. The iron core includes two parts: the iron core column and the iron yoke. Core post upper sleeve

The win and that iron yoke are connected with the iron core column to form a closed magnetic circuit. The three-phase transformer is composed of three single-phase transformers connected in three phases, and the main magnetic flux of each phase forms an independent loop along its respective iron core, which is independent of each other.

2. Different scope of application: The structural feature of three-phase core transformer is that three-phase magnetic circuits are connected together, and each phase magnetic flux takes the other two-phase magnetic circuit as its own loop. In order to facilitate transportation and reduce standby capacity, three-phase group transformers are often used in large-capacity giant transformers. Three-phase transformers are widely used in circuits with alternating current from 50Hz to 60Hz and voltage below 660V V.

Import important equipment, precision machine tools, mechanical and electronic equipment, medical equipment, rectification devices, lighting equipment, etc. Various input and output voltages, wiring groups, the number and position of adjusting taps, the distribution of winding capacity, the equipment of secondary single-phase winding, the application of rectifier circuit, whether it is required to have a shell, etc. This product can be carefully designed and manufactured according to the requirements of users.

Extended data:

Operating conditions of transformer:

1. The altitude of the transformer installation site shall not exceed 5000m.

2. The ambient temperature should be between-15℃ and +45℃.

3. The relative humidity should be less than or equal to 90%.

4. The installation site should be free of gas, steam, chemical deposits, dirt, conductive dust and other explosive, flammable and corrosive substances that seriously affect the insulation strength of the transformer. In order to avoid abnormal operation of the transformer and cause accidents.

Reference source:

Baidu encyclopedia-iron core transformer

Baidu encyclopedia-three-phase transformer