On-site Testing of the HV/EHV class of Current Transformers
Testing power transformers is important because it helps ensure that the components of transformers are working properly and reduces the risk of failure.
Common tests for power transformers include turn ratio resting, insulation resistance testing, power factor testing, and resistance testing.
Testing transformer oils and insulating oils regularly is standard industry practice. Utility companies typically perform routine electrical testing on a 3-5 year rotation.
Power transformer testing demands expertise and specialized equipment. It must be performed by a professional electrical engineer or technician with the appropriate expertise and experience.
The testing of power transformers has the following advantages: