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What are the abnormal phenomena of transformers in diesel generator group?

Views: 0     Author: Site Editor     Publish Time: 2018-04-13      Origin: Site

When the Cummins diesel transformer is running, it must keep the normal oil level. Operation duty should check the indication of the oil level meter on time. When the oil level is too high (such as summer), it should be put on the oil; when the oil level is too low (such as winter), it should be kept in time to maintain the normal oil level to ensure safe operation of the transformer.
The oil level is too high. The oil level is higher than the oil level line due to the increase in oil temperature, and sometimes the oil level can not be seen in the top. The reason for the oil level is: the transformer cooler is not working properly, so that the temperature of the transformer is increased, the oil is thermally expanded, resulting in rising oil level; the transformer is high, the oil level is higher, once the environment temperature is obvious, causing oil level high. If the oil level is absent due to the operation of the cooler, it should be checked whether there is no gray ash, the cooler surface, the lower valve is opened, the pipe has no clogging, the fan, the dubwater pump is normal, cooling media Whether the temperature is suitable, whether the flow is sufficient. If the oil level is too high, it is caused by excessive cooking. It should be put to appropriate height. If the oil level is not seen, it should be judged that the oil level is indeed higher than the ZUI oil level line, and then put oil to appropriate height.
The oil level is too low. When the oil level corresponding to the oil temperature in the transformer is significantly decreased, the oil level should be judged that the oil level is too low when the oil level is below the ZUI low oil level. The reason why the oil level is low is: transformer oil leakage; the original oil level of the transformer is not high, and when the transformer load suddenly decreases, when the external ambient temperature is significantly reduced, the oil level is too low; strong oil water cooling transformer oil flows into the cold oil For longer, the oil level will be too low. The oil level is too low, which will cause light gas protection. If it is a float relay, it will also cause heavy gas protection trip. When severe iswise deficiency, the transformer core and winding will be exposed to air, which is not only easy to reduce the insulation capacity, but may cause insulation breakdown. Therefore, the transformer has a low oil level or the oil level is significantly reduced, and it should be kept to normal oil level as soon as possible. If the oil leakage is severe, the oil level is significantly reduced, and gas protection should be prohibited from being changed from the trip to signal, eliminating oil leaks, and returning the oil level. If a large amount of oil, the oil level is low below the gas relay or continues to decline, the transformer should be discontinued immediately.
Pseudo bit. The cause of pseudo-oil positions may be: When the non-capsule sealing oil pillow oil label is blocked, the respirator is blocked or explosion-proof tube pores, there will be a fake position. When there is a number of air in the capsule sealing oil pillow, the capsule is blocked, the capsule is unreasonable and the capsule bag is broken, and the capsule is broken. When processing, the heavy gas protection should be released first.


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