Oil immersed power transformers are energy-saving and low-noise, suitable for installation in power grid distribution projects

Description :

  Power transformer is a static electrical equipment that uses the principle of electromagnetic induction to change the AC voltage, mainly solving the problem of voltage transformation and distribution in the process of power transmission. In the construction and renovation of power grids in Chenzhou and Hunan regions, power transformers are the core node equipment, widely used in substations, industrial and mining enterprise distribution rooms in Guiyang, Rucheng, Zixing, Yongxing, Anren, Linwu, Jiahe, Anren, Guidong County, and civil building power supply systems. This device can achieve efficient conversion from high voltage to low voltage or low voltage to high voltage, ensuring stable operation of terminal electrical equipment at rated voltage, while also having electrical isolation function to ensure the safety of the power grid. Typical working conditions include outdoor pole installation, indoor substation floor installation, and internal integration of box type substations, which need to adapt to different environmental temperatures and load fluctuations.

The core specifications of power transformers in Changsha, Zhuzhou, Xiangtan, Loudi, Huaihua, Yongzhou, Yueyang, Yiyang, Changde, Shaoyang, Xiangxi, Zhangjiajie, and Chenzhou cities involve key indicators such as rated capacity, voltage level, connection group number, and impedance voltage. Common voltage levels include 10kV/0.4kV, 35kV/10kV, etc., with rated capacities ranging from 30kVA to 2500kVA, depending on load requirements. The iron core is usually made by stacking high magnetic conductivity cold-rolled silicon steel sheets, and the coil is made of high-quality oxygen free copper wire, which is vacuum dried to enhance insulation performance. The shell is mostly a corrugated oil tank or a plate type radiator structure, which complies with the GB 1094 series national standards and JB/T 10088 industry standards. Before leaving the factory, it is necessary to pass voltage withstand tests, no-load loss tests, and load loss tests to ensure that the local discharge capacity is within the specified range and meets long-term operational reliability requirements.

  When selecting power transformers, it is necessary to clarify the usage scenarios and load characteristics. For residential areas and commercial centers, priority should be given to using low-noise, low loss amorphous alloys or S13/S20 series energy-saving power transformers to reduce operating costs; For industrial and mining enterprises with high impact loads, conventional oil immersed power transformers with strong overload capacity and high mechanical strength need to be considered. If the installation space is limited, a compact design or dry-type power transformer can be chosen as a substitute, but attention should be paid to differences in heat dissipation conditions. Not suitable for high-frequency power conversion or DC transmission scenarios. When purchasing, it is necessary to check the matching degree between the nameplate parameters and the actual requirements, and pay special attention to the adjustment range of the tap changer gear to adapt to the voltage fluctuations of the power grid and ensure the stability of the output voltage.

  The installation of power transformers must strictly follow the electrical equipment installation engineering specifications. The levelness error of the foundation channel steel should be controlled within the allowable range, and the grounding resistance value should be less than 4 ohms. Before operation, check whether the oil level and color are normal, whether the silicone of the respirator has changed color, and whether there are cracks in the sleeve. Regular infrared temperature measurement is recommended for daily maintenance to monitor abnormal temperatures of joints and the body; Conduct a preventive test once a year, including insulation resistance measurement, DC resistance testing, and oil chromatography analysis. Common faults such as oil leakage, high temperature rise, or abnormal noise require timely investigation of the causes of seal aging, overload, or internal looseness. Reasonable maintenance can extend the service life of power transformers, ensure continuous and stable power supply to the grid, and reduce the risk of unplanned power outages.

AfterSalesService :