Transformers are very important electrical equipment in power systems, but during operation they may fail for various reasons. At such times, timely troubleshooting is required to ensure the normal operation of the transformer.

Common transformer faults include winding short circuits, ground faults, insulation aging, etc. To eliminate these faults, the following steps should be taken:

1. Check the transformer wiring to ensure that each line is correctly connected and the insulation is in good condition.

2. Check the transformer windings for issues such as short circuits, open circuits, or insulation aging.

3. Inspect the transformer cooling system to check for problems such as blockages or leaks.

4. Check the transformer protection system to ensure that all protective devices are functioning properly.