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Transformer routine maintenance

Transformer routine maintenance

  • Categories:Industry News
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  • Time of issue:2019-10-09
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(Summary description)(1) Look at the appearance. Mainly check whether there is oil leakage outside the transformer, whether there is smoke or discharge of parts. Because the transformer shell is not tightly welded or the rubber pad is not good, it may cause transformer oil leakage.

Transformer routine maintenance

(Summary description)(1) Look at the appearance. Mainly check whether there is oil leakage outside the transformer, whether there is smoke or discharge of parts. Because the transformer shell is not tightly welded or the rubber pad is not good, it may cause transformer oil leakage.

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2019-10-09
  • Views:0
Information

(1) Look at the appearance. Mainly check whether there is oil leakage outside the transformer, whether there is smoke or discharge of parts. Because the transformer shell is not tightly welded or the rubber pad is not good, it may cause transformer oil leakage. If the oil level is too low, the insulation protection will be lost, which will cause electrical discharge between the conductive parts or between the conductive part and the shell, which will burn the transformer in severe cases. Therefore, faults and oil replenishment should be eliminated in time to ensure that the oil level is maintained at 1 / 4-3 / 4 of the oil level. For loose parts, poor contact and even discharge, disconnect the transformer drop insurance in time to eliminate hidden dangers.

(2) Listen to the sound. Normally running transformers will emit uniform and subtle buzzing sounds. When the transformer has different faults, the sound will change. At this time, measures should be taken according to the site conditions to find the cause of the failure.

(3) Check the oil pollution and dust on the high and low voltage bushings, and clean and wipe the oil stains and dust in time to prevent the flashover discharge when the weather is wet or rainy, causing short-circuits between the bushings and the high voltage fuses. Become unable to operate normally. I require inspectors to clean up at least every two months.

(4) Observe the oil color and regularly check the oil temperature, especially to increase the number of inspections in weather with large load changes, large temperature differences, and bad weather. The top oil temperature in the operation of oil-immersed distribution transformers must not be higher than 95 ° C. To prevent the winding and oil from deteriorating too quickly, the temperature rise of the top oil should not often exceed 45 ° C.

(5) Shake to measure the insulation resistance of the distribution transformer, and check whether each lead is firm. Pay special attention to whether the connection of the low-voltage outlet is good and the temperature is abnormal.

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