3 Phase Distribution Transformer Daily Inspection

1) 3 phase distribution transformer iron core. Pay attention to the tightness of the upper and lower splints, pressure plates and square iron, and the maintenance personnel use a wrench to tighten the bolts of each part one by one; observe the flatness of the iron core and the tightness of the laminations, whether the insulating paint film is complete or not, and whether it has fallen off; measure the through-hole screw To the ground and to the insulation resistance of the iron core, keep the tightness of the through-bolt.

2) 3 phase distribution transformer winding. Observe whether there is displacement, inclination, damage, deformation, insulation discoloration and discharge traces in the winding, without dirt and impurities; observe the insulation state of the lead wires, and rule out brittle deformation, broken strands and incomplete problems; the air duct between the high and low voltage side windings should be kept Unobstructed, eliminate blockage.

3) 3 phase distribution transformer insulators. Keep the cleanliness of the insulator, observe whether there is creepage or carbonization, and keep it fixed firmly.