Dry-type Transformer Inspection

Dry-type Transformer Inspection

⒈ Check for abnormal sounds and vibrations.
⒉ Check for local overheating, corrosion by harmful gases, etc., which may cause discoloration on the insulation surface due to creepage marks and carbonization.
⒊ Check if the air cooling device of the transformer is operating normally.
⒋ The high and low voltage joints should not be overheated. The cable heads should not have leakage or creepage.
⒌ The ​​temperature rise of the winding should be monitored according to the insulation material grade used by the transformer, and the temperature rise should not exceed the specified value.
⒍ The supporting porcelain bottle should be free of cracks and discharge marks.
⒎ Check if the winding pressing parts are loose.
⒏ Indoor ventilation and core air ducts should be free of dust and debris, and the core should not be rusted or corroded.