Dongguan Juke Transformer - Wiring Group for Double Winding Power Transformers

2019-04-27 14:53:43 JuKe Technology (DongGuan) Co., Ltd. Read

Dongguan Juke Transformer - Wiring Group for Double Winding Power Transformers

The three-phase transformer and the three-phase transformer group can be connected in a star shape, a triangle shape, and a zigzag shape. They are represented by Y, D, and Z symbols on the high voltage side, and are represented by y, d, and z symbols on the low voltage side, respectively. The high voltage is represented by the YN and ZN symbols, and the low voltage is represented by the yn and zn symbols. There are 12 types of wiring groups depending on the different wiring combinations of the three-phase windings. However, in order to facilitate the manufacture and use, China has originally specified five types of wiring groups: Y, Yn0 (Y/Y0-12); Y, Yn (Y/Y-12); YN, Yn (Y0/Y-12) ; Y, d11 (Y / △ -11); YN, d11 (Y0 / △ -11).
Y, Yn0 (Y/Y0-12): For distribution transformers. The primary windings are star-shaped and the secondary windings are neutral grounding.
YN, d11 (Y0/△-11) are used for high-voltage transmission lines, so that the high-voltage side of the power system may be grounded.
Y, zn11: The primary winding is a star connection, and the secondary winding is a zigzag connection (neighbor connection) with a neutral point grounding.
However, the above several wirings do not include D, yn11. In the distribution industry of the communication industry, urban power grid, industrial and mining enterprises and civil buildings 10/0.4/0.23kV, the three-phase transformers that have been wired by the national stereotyped products Y and Yn0 for many years are the standards adopted before the former Soviet Union. However, distribution transformers imported from abroad have two kinds of wiring methods (D, Yn0; D, yn11). The transformers selected by domestic and foreign enterprises and the distribution transformers of most countries use D, Yn11 wiring.
China's national standard JGJ16-2008 "Electrical Design Code for Civil Buildings" has the following provisions for the selection of transformer wiring groups:
If one of the following conditions is concerned, the wiring group should be D, Yn11 type transformer:
2 Three-phase unbalanced load exceeds the rated power of each phase of the transformer by more than 15%.
2 It is necessary to increase the single-phase short-circuit current value to ensure the sensitivity of the low-voltage single-phase grounding protection device.
2 Those who need to limit the third harmonic content.

Wiring Group for Double Winding Power Transformers.jpg

I am here at Dongguan Juke Industrial Development Co., Ltd., our Juke Industrial is a transformer automation production equipment supplier/Transformer OEM. If you need to buy or customize transformer automation production equipment, you can contact our business staff to customize or purchase, thank you.

Dongguan Juke Industrial Development Co., Ltd. is a professional automation workshop production line solution provider for high frequency transformer peripheral equipment.

Juke Industry is dominated by Taiwanese technology, and all raw materials are selected and processed in strict accordance with Taiwan Standard Huai, and with the excellent technology and professional services to create maximum value for customers, and determined to become the world's high-frequency transformer automation equipment program The leading brand.
Juke Industry adheres to European standards. The product series include: Transformer EI type automatic inserter, ei type transformer inserter, transformer core inserter, transformer automatic casing machine, transformer automatic core assembly machine, (all Automatic core assembly + bag tape + test + wobble plate), transformer core wrap machine, transformer automatic winding machine, CNC winding machine, CNC coil winding machine, single-axis winding machine, multi-axis winding machine , 12-axis automatic winding machine, automatic winding + tape machine, (USB charger automatic film machine), automatic rubberizing machine, semi-automatic tape machine, vacuum impregnation machine, (different single and double cylinders) , transformer automatic flip soldering machine, automatic soldering machine and semi-automatic soldering machine (also called flip soldering machine), magnetic ring inductor automatic foot machine, infrared tunnel furnace, ultraviolet curing oven, baking line and other high-frequency transformer peripheral automation equipment The products are widely used in high and low frequency transformers, ballasts and motor manufacturers. In order to meet the needs of the market, in 2008, in Yixiu District, Anqing City, Anhui Province, a group of professional and technical personnel to provide quality services to customers.

If you need to customize or purchase the above products, you need to buy or customize the transformer automatic production equipment, you can contact our business staff. Below is the contact information of our business staff, if you need to buy or customize the product, please contact, thank you.
Dongguan Juke business staff contact information:
Phone: 18819603799
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Manufacturer Tel: 0769-89870552
Company Name: Dongguan Juke Industrial Development Co., Ltd.
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Address: Room 406, 4th Floor, Jufeng Qinlai Industrial Park, No. 53 Shangnan Road, Shangjiao Community, Chang'an Town, Dongguan City