How to judge the fault of the dry type transformer through t

      The dry transformer in operation is a little noise is not, this is a very normal phenomenon, but sometimes there will be a lot of noise, which shows that you can judge whether the transformer has a fault through the sound. In fact, the sound of the dry transformer can also be seen whether there is a damage phenomenon. In general, the dry type transformer in the sound of such a few problems will show that the dry type transformer has a fault, must be repaired. Common dry type transformer in operation when these sound problems mean that your dry type transformer is broken, the following we have a specific look:

 

There is a noise in the dry-type transformer. If the sound of the transformer is greater than normal and there is obvious noise, but the current and voltage are not obviously abnormal, it may be the internal clamp or screw loosening of the core, resulting in the increase of the vibration of the silicon steel sheet.

 

The dry-type transformer has a discharge sound. If partial discharge occurs inside or on the surface of the transformer, the sound green will be mixed with "crackling" discharge sound. When this happens, if at night or rainy weather, can be seen near the transformer bushing blue corona or spark, it shows that the porcelain pollution is serious or equipment line clamp contact is bad; If the internal discharge of the transformer is electrostatic discharge of ungrounded parts, or the tap switch is not in good contact with the discharge, then the transformer should be further detected or stopped.

 

The dry type transformer has the sound of boiling water. If the sound of the transformer is mixed with the sound of water boiling and the temperature changes sharply and the oil level rises, it should be judged that the transformer winding has a short circuit fault, or the tap switch is seriously overheating due to poor contact. At this time, the transformer should be stopped immediately for inspection.

 

The dry-type transformer crackles. If the transformer sound is mixed with uneven cracking sound, it is the transformer internal or surface insulation breakdown, at this time should immediately stop the transformer inspection.

 

The problem of the above sound is a detail that cannot be ignored, we should grasp it well, otherwise it is really not good to use, not only the use of dry type transformer is not good, but also may shorten the service life!