Related content of oil-immersion transformer
As the saying goes, develop the economy, electric power first. As an essential part of the power transmission business, the market demand has only been increasing, electricity also involves all aspects of our life, so next we will learn about oil-immersed transformer knowledge, I believe that after reading this article, you will have a more comprehensive understanding of oil-immersed transformer.
What is an oil-immersed transformer?
Oil-immersed transformer is one of the important equipment in the power supply and distribution system of industrial and mining enterprises and civil buildings. It reduces the 10 (6) KV or 35KV network voltage to the 230 / 400V bus voltage used by users. Can be used in households (outside), can be installed on the rod in 315kVA and below, ambient temperature not higher than 40℃, not less than-25℃, maximum daily average temperature 30℃, maximum annual average temperature 20℃, relative humidity not exceeding 90% (ambient temperature 25℃), altitude not exceeding 1000m. If inconsistent with the above use conditions, the appropriate quota adjustment shall be made according to the relevant provisions of GB6450-86.
The Structure and Application of the Oil-immersed Transformer
Oil-immersed transformer is a more reasonable structure, better performance of a new high-performance transformer, the three-dimensional core because of its three core is equal triangle stereo arrangement, no air gap, the winding closer, three magnetic road length, and the shortest, core column cross section area closer to the circle, so the performance is further improved, loss, noise reduction, three balance, reduce the three harmonic components, the product is more suitable for urban and rural, industrial and mining enterprise grid transformation, more suitable for combined transformer and pre-installed substation transformer.
Performance characteristics of oil-immersed transformer
1.Oil-immersed transformer relies on oil as a cooling medium, which includes oil immersed self-cooling, oil immersed air cooling, oil immersed water cooling and forced oil circulation. The oil-immersed transformer adopts the fully oil-filled seal type. Rirugated oil tank housing with its own elasticity to the expansion of oil is permanently sealed oil tank, oil immersed transformer has been widely used in the distribution equipment.
2.In addition to the small capacity, the oil-immersed transformer low-voltage winding generally adopts the copper foil winding cylinder structure: the high-voltage winding adopts the multi-layer cylinder structure, so that the Ann turn distribution of the winding is balanced, with small magnetic leakage, high mechanical strength and strong short-circuit resistance.
3.The core and the winding have each adopted the fastening measures, the device height, low pressure leads and other fastening parts are equipped with self-locked anti-loosening nuts, using the non-lifting structure, can withstand the turbulence of transportation.
4.The coil and the iron core are vacuum-dried, and the transformer oil adopts the vacuum oil filtration and oil injection process to minimize the moisture inside the transformer.
5.The fuel tank uses corrugated sheet, which has the breathing function to compensate for the oil volume change due to the temperature changes, so the product has no oil storage tank, which obviously reduces the height of the transformer.
Because the corrugated sheet replaces the oil storage tank, the transformer oil is isolated from the outside world, which effectively prevents the entry of oxygen and water and leads to the decline of insulation performance, greatly reduces the maintenance cost of the transformer, and extends the service life of the transformer.
At present, the price of oil immersed transformer on the market is mainly affected by the market supply and demand requirements, but also affected by the specifications and process level of raw materials used by different manufacturers. The market price of oil immersed transformer is about $14,138, but this quotation can only be used as a reference, the specific price needs to ask the manufacturer.
There are many Chinese manufacturers of oil immersed transformer technology is very mature, there are a lot of advanced manufacturers, such as SHZ Power is a professional oil immersed transformer Chinese manufacturer, if you want to know more about oil immersed transformer, want to find high quality oil immersed transformer, welcome to send email inquiries at any time.
