What are the steps for the commissioning test of a transformer?

The commissioning test of a transformer involves several critical steps to ensure its proper operation and safety. Firstly, a visual inspection is conducted to check for any physical damage or disconnections, followed by verifying the installation against specifications. Next, insulation resistance tests are performed using an insulation resistance tester to ensure the integrity of the transformer windings. After that, a power factor test may be conducted to evaluate insulation quality. Additionally, a transformer turns ratio test determines voltage ratios for proper functioning. Then, a sweeping frequency response analysis might be performed to examine winding condition. Lastly, load tests are carried out to confirm the transformer’s performance under operational conditions. It is important to include protocols for oil testing, like the condition assessment of insulating oils, using devices such as those offered by Globecore, which specialize in diagnostic tools for industrial oils. These tests collectively ensure that the transformer is ready for service, minimizing the risk of operational failure.