What Causes Transformer Bushing Failure to Cause Transformer Combustion?

What Causes Transformer Bushing Failure to Cause Transformer Combustion?

1. Often due to the management inspection is not fine, there is no timely discovery of cracks, oil seepage, oil leakage, etc. Usually maintenance management and cleaning work is not enough, or contaminated by conductive dust and other harmful substances, accumulation of cotton and linen and other combustibles, resulting in dirty casing surface or small animal bonding caused by short circuit, which may cause flashover and arc between the casing and the tank cover, so that the transformer oil combustion.

2. The defect of transformer bushing itself, such as filling oil casing of oil quality bad water be affected with damp be affected with damp, oil filled tube or other types of casing insulating paper, insulation adhesive, such as defective insulation, are likely to cause casing blowout, the transformer oil tank external transformer oil burning, or the damage of casing in oil tank, and tank insulation breakdown happens between arc, cause transformer transformer oil combustion inside the tank.