How to judge the fault of high frequency transformer through various abnormalities of sound

2019-06-04 12:20:39 JUKE CHINA ODM OEM Transformer factory Read

How to judge the fault of high frequency transformer through various abnormalities of sound

When the high-frequency transformer is running, there is no noise at all. This is a very normal phenomenon, but sometimes there will be a lot of noise, which means that the transformer can be judged whether the transformer is faulty by sound. Generally speaking, the dry type transformer has such problems in the sound, which means that the dry type transformer has a fault and must be repaired. Let's take a look at it:

1. High frequency transformer has noise

   If the sound of the transformer is larger than normal and there is obvious noise, but the current and voltage are not obviously abnormal, it may be caused by loose internal screws or screws that press the core, which causes the vibration of the silicon steel sheet to increase.

2. High frequency transformer has discharge sound

   If a partial discharge occurs inside or on the surface of the transformer, there will be a “噼啪” discharge sound in the sound green. When this happens, if there is a blue corona or spark near the high-frequency transformer bushing at night or in rainy weather, it means that the porcelain is dirty or the equipment clamp is in poor contact; if the transformer is internally discharged The electrostatic discharge of the ungrounded component or the poor discharge of the tap changer should be further tested or deactivated.

3. High frequency transformer has water boiling sound

   If the sound of the transformer is mixed with water and the temperature changes abruptly, the oil level rises, it should be judged that the transformer winding has a short-circuit fault, or the tap-changer is seriously overheated due to poor contact. At this time, the transformer should be deactivated for inspection.

4. The high frequency transformer has a popping sound

   If the transformer sound is mixed with uneven cracking sound, it is the internal breakdown of the transformer or the surface insulation. At this time, the transformer should be deactivated and inspected immediately.

   The above sound problem is a detail that cannot be ignored. Everyone should take good care of it. Otherwise, it will be really difficult to use. Not only is the use of high-frequency transformers not good, but it may shorten the service life!

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