Transformer installed temperature control device in the operation of the main purpose is to facilitate the monitoring of transformer temperature changes of each part, this is because the transformer in operation, due to the electrical energy into heat energy in the core and winding loss, and can cause fever, the parts make the transformer temperature rise. When the quantity of heat to the surrounding radiation, conduction, transformer temperature rise gradually, after the transformer temperature over saturation state, would be a serious threat to the operation safety and service life of the transformer, therefore, the cooling system of transformer runtime must adopt necessary, to ensure that the transformer temperature rise within the prescribed scope. So what is the maximum temperature of the transformer and what is the permissible temperature range? Baoding oil immersed transformer supplier for your solution.
In operation, transformer temperature and temperature rise are required. The difference between the temperature of the transformer and the surrounding air temperature is called the temperature rise of the transformer. When the temperature of the transformer is raised, the resistance of the winding will increase and the copper loss will be increased. Therefore, the temperature rise of the transformer at the rated load will be allowed to rise.
When the quantity of heat to the surrounding radiation, conduction, transformer fever and heat balance, the temperature of each part tends to be stable, to facilitate the monitoring of each part in the operation of the transformer temperature conditions, stipulated above layer allows the temperature of the oil temperature to determine the transformer operation, allows the temperature of the transformer is mainly determined by the winding insulation.
The allowable temperature rise range of the oil-immersed transformer is as follows:
1, forced to guide oil circulating air-cooled transformer, the highest temperature cooling air is not more than 40 ℃, the highest top oil temperature shall not exceed 85 ℃, the temperature rise of less than 45 ℃.
2, oil-immersed natural cooling, air cooling baoding oil-immersed transformer, the highest temperature cooling air is not more than 40 ℃, the highest top oil temperature is 95 ℃, the upper oil the permissible temperature rise of 55 ℃. In order to prevent the accelerated ageing of the insulation oil, natural circulation transformer top oil temperature should not be commonly often exceed 85 ℃.
3, forced oil circulation air-cooled transformer, when cooling device all stopped, if the upper oil temperature of 85 ℃; Allowed to run for 20 minutes under rated load. Full stops and exit the protection linking piece can run cooler, when the transformer top oil temperature shall not exceed 85 ℃, running time may not exceed 60 minutes.
In conclusion, the range of temperature rise allowed by different types of baoding oil-immersed transformers is different. But no matter what type of transformer, its allowed temperature rise range is stipulated, cannot exceed. At the same time, it is necessary to monitor the temperature of each part of the transformer at any time during the operation of the transformer, so as to ensure the normal temperature control system of the transformer and ensure the safety of the transformer.
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