Variety of transformer fault types, transformer put into operation in time varying, the experienced over-voltage, over current, and the maintenance and use are not all the same fault trend is also different. Damaged by the failure to often be a gradual process, only the full understanding of the actual operating state transformer, integrated application of various online and historical data, and use of various diagnostic techniques to discover hidden faults, to improve the accuracy of fault detection and diagnosis sex.
One way to check the power transformer fault

1. Look. Failure occurs by observing the color, temperature, odor and other anomalies, outside-carefully check the transformer everywhere.

(1) leakage of oil. Leakage of transformer oil running quite common, or the outside of glittering black liquid adhesive may be leaking. Small distribution transformers installed in the cabinet because of the spilled oil into the bottom of the pit distribution cabinet, it is not easy to detect. Mainly due to fuel tank leakage sealed connection with the bad components, weldments or castings defects, or by running extra load vibration. In addition, the internal fault will also cause the oil temperature increased, the volume expansion of the oil, oil spills occur.