The role of three-phase dry-type transformer_how to wire three-phase dry-type transformer

Three-phase refers to the voltage rise and fall of a three-phase system. Dry type is for the classification of cooling methods. Transformers can be divided into dry type and oil-immersed type according to the cooling method. The former is air convection natural cooling or fan cooling, and the latter is oil-immersed. Cooling and cooling methods are different, and the application field and scope are also different.
Three-phase dry-type transformers are mainly used as some small-capacity transformers, such as local lighting and electronic circuits of equipment, precision machine tools, experimental devices, electronic computers, and electricity for high-rise buildings. They can be used as communication on industrial production lines. Regulated power supply is used, and low-voltage power distribution for special purposes often fluctuates greatly, which is also more applicable. Customers buy this type of transformer, which is mainly used as an important component in various power supplies, and its safety protection and voltage transformation effects are very good.
There are many types of transformers. If you want to buy a device you are satisfied with, the most important thing is to understand the type of transformer, such as the characteristics and main uses of three-phase dry-type transformers.
How to wire a three-phase dry-type transformer
1. Connection of three-phase dry-type transformer: connect the ends, X, Y, and Z of the three windings of the three-phase power supply together to form a common point O, and draw out three terminal wires from the start ends A, B, and C. This connection method It is called “star connection” or “Y connection”. A three-phase power supply is a system in which three sinusoidal power supplies with the same frequency, the same amplitude and the phases differ by 120° are connected in a certain way to supply power to the outside. The three-phase power connection has two types: Y-shaped and △-shaped.
2. Both star connection and delta connection refer to the winding connection of the dry-type isolation transformer itself. The star connection refers to connecting the three-phase ends of the windings together, and the three-phase first end is the power supply end; the delta connection refers to connecting the three-phase ends of the windings together. The three-phase windings are connected end to end, and the three end points are the power terminals; no matter what kind of connection, there must be a three-phase sine with a phase difference of 120 degrees.
3. Three-phase dry connection: 1 connection 6, 2 connection 4, 3 connection 5, and it becomes the three outlets of the dry isolation transformer.

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