What Adverse Effects Does The Transformer Manufacturer Tell You About The High Temperature Of The Transformer？

According to the technical parameters of the cooler fan, the calculation results show that the effect of scaling of the cooling system of the strong oil air-cooled transformer on its cooling capacity and maintenance is the air volume.

s is the marked area and t is the time.

Model Full pressure /PA voltage /V impeller diameter rotation speed /(Rmin current /a air volume /(m) power /kW noise /DB2) Use Ta-Si640 anemometer to continuously measure the wind speed at the outlet of the cooler for 1 minute.

Compared with the theoretical calculation of the outlet wind speed, the output wind speed of the transformer cooler is 10.21, and the cleaned cooler is detected from the numerical and measured values.

The measured values of the wind velocity are consistent with the theoretical values.
The results show that under the same operating conditions, the cooling effect of the cooling system is significantly improved.

The routine inspection site is located at a higher altitude and the air is thin.

The transformer is immersed in cold oil with air, which reduces the cooling effect in self-cooling.

The temperature rise limit of transformer is mainly based on the service life of transformer.

For every liter of 6K, the service life of the transformer insulation material will be reduced by half.

Oil-immersed transformers generally use Class a insulation materials.

The temperature is 105℃ and the life is 98℃.

The service life of Class a insulation material is guaranteed for 20 years.

According to iec76-2 standard, when the altitude exceeds 1000 meters, the oil temperature rise boundary of the cold transformer decreases by 2%, and the oil temperature rise boundary of the oil into the air-cooled transformer decreases by 3%.