Transformer testing is performed by utility companies, as well as other industries. This usually happens every three to five years. Testing is only done every few years, as the process of testing requires that the unit be de-energized and isolated. This can cause production to be interrupted for a short time. Transformer tests are also needed in other cases.
Reintroduction – When you remove a transformer from storage, it must be tested before it is reintroduced into your system. The unit will be checked to ensure it is properly stored and, if necessary, re-energized.
Acceptance Testing – When you receive a new transformer for use in your facility, test it before energizing it to make sure that it was not damaged during shipping. Compare your field tests with the results provided by the manufacturer.
Moving Locations – If moving transformers is on your agenda, you will always run the risk of damage. You can determine if your equipment has been damaged by performing a transformer test.
Validation for Repairs – If you have recently had transformer repairs, you can use testing to verify the results and make sure the repairs are effective.
Verification after an Oil Test – After an oil test has returned results that are in doubt, transformer testing will provide additional information on any repairs needed.
In conclusion, scheduling transformer testing at the appropriate intervals and in specific scenarios is crucial for ensuring the reliability and safety of electrical systems. While the typical timeframe for routine testing falls between every three to five years, it must be approached with care due to the need for de-energization and isolation, which can briefly disrupt operations. Additionally, transformer tests play vital roles in various situations, such as when reintroducing stored transformers, accepting new units, relocating equipment, validating repairs, or verifying questionable results from oil tests. By prioritizing timely and thorough transformer testing, industries can mitigate risks, optimize performance, and ultimately safeguard their critical electrical infrastructure.
This post was written by Justin Tidd, Director at Becker/SMC. For nearly half a century, Becker Mining has been at the forefront of industry safety. Becker/SMC is the industry’s leader in increasingly more sophisticated electrical control systems. Most of the major innovations, design features, and specialized electrical components have been developed by Becker/SMC. Click here to learn more!