(1) If the sound mixed with single-phase transformer are water boiling sound, but also issued a boil bubbles Yat think out loud, which is likely to have more severe winding fault, causing severe fever nearby parts make OIL AND GAS. In fact, as long as the tap-poor contact between local point have serious overheating or single-phase transformer turn short circuit, will this sound. In this case, we should immediately stop single-phase transformer operation, maintenance.
(2) If the sound of a discharge in the folder "creak" sound, may be single-phase Transformer body or casing surface partial discharge occurs. If the casing of the problem, in bad weather or at night, you can also see the corona glow or blue, purple little spark, then, should be to clean up the dirt surface of the sleeve, and then coated with silicone oil or grease and other coatings. At this point, we want to stop the operation of single-phase transformer immediately, check the ground with the core of the distance from live parts to meet the requirements.
(3) large and noisy sound, may be single-phase transformer core issues. Example: clip or clamping screw single-phase transformer core loose when the meter indicates normal color insulating oil temperature and oil level are no major changes, then you should stop running single-phase transformer, conduct an examination.
(4) stereo clip has a continuous, regular impact or friction sound, it may be because some of the components of single-phase transformer core vibrations caused by mechanical contact, either because of abnormal noise caused by electrostatic discharge, and a variety of measurement meter indication and the temperature had no reaction, although this type of sound unusual, but no major harm to run, do not immediately stop the run, can be excluded when scheduled maintenance.
(5) When the sound single-phase transformer explosions in the folder, but it is uneven big time, it may be a single-phase transformer has a body of insulation breakdown. In this case the time, it should stop running single-phase transformers, for maintenance.