Power Oil Transformer Inspection Items

(1) Whether the power oil transformer has abnormal sound, such as uneven sound or discharge sound, etc.

(2) Whether the power oil transformer oil level is normal, whether there is seepage or oil leakage.

(3) Whether the power oil transformer oil temperature is normal (the upper oil temperature generally cannot exceed 85°C).

(4) Whether the bushing is clean, whether there are cracks, damage and discharge.

(5) Is there any heating phenomenon in the joint.

(6) Whether the power oil transformer explosion-proof membrane of the explosion-proof tube is complete.

(7) Whether the Buchholz relay is leaking oil and whether the inside is full of oil.

(8) Whether the respirator is unblocked, whether the oil level of the oil seal respirator is normal, and whether the silica gel in the respirator is saturated with moisture.

(9) Whether the power oil transformer cooling system is operating normally.

(10) Whether the power oil transformer shell ground wire is intact.