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How the oil-immersed transformer performs oil treatment

Views: 0     Author: Site Editor     Publish Time: 2021-10-12      Origin: Site

The Oil-immersed transformer can be used indoors (outdoors) and can be installed on poles when the capacity is 315kVA and below. The ambient temperature is not higher than 40℃ and not lower than -25℃. The highest daily average temperature of an transformer is 30℃. The highest annual average temperature is 20℃, the relative humidity does not exceed 90% (ambient temperature is 25℃), and the altitude does not exceed 1000m. In daily production and life, how does the Oil-immersed transformer process oil? Let's take a look together next.

This is the content list:

l Oil-immersed transformer pressure filtration method

l Oil-immersed transformer for charged oil filtering

On-load Capacity Adjustment Series Transformer

Oil-immersed transformer pressure filtration method


The insulating oil used in the Oil-immersed transformer must have insulating properties and thermal conductivity (national standards). At the installation site, the transformer usually uses pressure filtration to complete the general drying (removal of moisture) and purification (removal of dirt) of the insulating oil.

When the Oil-immersed transformer is working normally, the pressure gauge works normally under the pressure of 3*10 ~ 4*10 Pa. If the transformer is blocked by impurities and oil paper, the pressure will increase. When the pressure reaches 6*10 Pa, it must be stopped and the filter paper must be replaced. The transformer filter paper is dried in an oven at 80-90℃ for 24 hours before use, and placed in a clean container. The filter screen of the transformer needs to be cleaned every 10~15 hours. In the beginning, the oil is filtered within 3-5 minutes, and the oil outlet is sent back to the dirty oil tank through the valve to filter the oil stored in the oil filter again, and then pass the transformer. The valve is sent back to the dirty oil system and filtered again. The above oil filter should be refined and dried many times until it is qualified.


Oil-immersed transformer for charged oil filtering


When the voltage of the transformer is higher than 10V, the charged oil filter is not suitable. Because when the oil-immersed transformer is filtered, more bubbles are generated, and the bubbles will be freed under the action of the higher voltage of the oil-immersed transformer, which will deteriorate the insulation performance of the oil and cause internal discharge. When the oil-immersed transformer is charged to filter the oil, the gas released from the oil in the relay is periodically discharged. When the transformer is charged to filter the oil, the Oil-immersed transformer oil pipe and the oil filter should be reliably grounded to protect the personal safety of the staff. The staff should be professional, supervised, and wear insulating supplies.

Zhejiang Shuntong Electric Co., Ltd. is a professional manufacturing enterprise integrating development, production, sales, and service. The company was established in 2009 and is located in Liushi Town, "China's Power Capital", specializing in the production of various high and low voltage equipment. The above is about how the Oil-immersed transformer performs oil processing. If you are interested in the Oil-immersed transformer, you can contact us and we will provide you with the equipment. Our website is www.sntoom.com.

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Zhejiang Shuntong Electric Co., Ltd. was established in2009 , specializes in the production of various high-low-voltage equipment.

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