Transformer Testing | Core Loss and Excitation

Transformer Testing | Core Loss and Excitation Testing transformers is a critical aspect of determining whether a transformer meets customer’s spec as well as industry standards or industry best practices. Transformers are important assets in power systems. Large power transformers are very expensive and require months to build. Core loss test is one of the tests performed prior to delivering any transformer. Core loss test entails applying voltage to one side of the transformer while the other side is left open. This allows excitation current to flow in the energized winding and allows flux to flow in the core. Abnormal values of current or flux will detect any deficiency in the core and coil assembly. In other words, it will detect if there is anything wrong with core laminations or winding turns such as wrong number of turns, deficient conductor, etc. Understanding core-loss test will enable you to troubleshoot or interpret test results when they exceed design values. Find me on Facebook -   / engineeringsimple