Three-Phase High Voltage Power Transformer

Yawei's power transformers have rated high voltage levels of 500KV, 330KV, 220KV, 110KV, and 66KV

• Rated Capacity: 2500kVA～120000kVA
• Rated Voltage: 35kV, 66kV, 110kV, 132kV, 220kV, 500kV
• Phase: Three-Phase
• Frequency: 50Hz / 60Hz
• Short circuit impedance (Uk,%):14-18%
• Voltage Regulation: Off-Circuit Tap Changer / On-Load Tap Changer
• Cooling: ONAN,ONAF,OFAF
• Connection Group: YNd11,YNynd11

Low loss, high efficiency, reliable insulation performance, strong short-circuit resistance, suitable for long-distance power transmission systems. Compact structure, good sealing, suitable for long-term outdoor operation.

Power plants, substations, regional power grids, main step-down stations of large industrial and mining enterprises.

GB1094, GB/T6451, IEC60076

Transformers are the most numerous and crucial electrical equipment in the power system, with a total capacity approximately 6 to 8 times that of generators. Its main function is to increase or decrease the voltage of electrical energy, thereby supporting efficient transmission, distribution, and use of electrical energy.

In the power system, when transmitting the same power, the higher the voltage, the smaller the current, and the lower the power loss on the line. At the same time, it can reduce the cross-sectional area of the transmission wire and save the amount of metal materials used.

Due to manufacturing process limitations, the output voltage of generators usually does not exceed 20kV. In order to achieve long-distance and high-capacity transmission, power plants need to use step-up transformers to increase the voltage to high voltage levels such as 35kV, 66kV, 110kV, 220kV, 330kV, 500kV, 750kV, etc; On the power side, the voltage is then reduced to a safe range suitable for various electrical equipment by a step-down transformer.

Power transformers generate a small amount of active power loss during the transmission of electrical energy, but their overall efficiency is extremely high: the efficiency of small and medium-sized transformers is not less than 95%, and that of large transformers can reach over 98%.

In addition to the power system, transformers are widely used in various industrial scenarios, such as electric furnaces, rectification equipment, welding devices, mining machinery, rail transit, etc., all of which require dedicated transformers. In addition, various types of transformer products are also used in experimental equipment, radio devices, measuring instruments, and control systems (such as small capacity control transformers).