1. Check for any abnormal sounds or vibrations.
2. Whether there is local overheating Discoloration caused by harmful gas corrosion and other phenomena such as creeping marks and carbonization on the insulation surface.
Is the air cooling device of the transformer operating normally.
4. The high and low voltage joints should not be overheated The cable head should have no leakage or crawling phenomenon.
The temperature rise of the winding should be monitored according to the insulation material grade used in the transformer, and the temperature rise should not exceed the specified value.
The porcelain bottle should be free of cracks Discharge traces.
7. Check if the winding pressure components are loose.
Indoor ventilation and iron core ducts should be free of dust and debris blockage, and the iron core should be free of rust or corrosion.
