Special Tests Consideration for a Distributed Photovoltaic Grid Power Transformer
Every DPV-GT transformer that is manufactured undergoes some form of factory testing. For DPV-GTs, these tests are quite extensive and a certain percentage of test failures do occur. Typically around 5% of the transformers produced will fail at least one of these tests. Test requirements are spelled out in a number of industry standards and specifications.
There is some overlap among industry standards with respect to testing. In recent years ANSI/IEEE Standard C57.12.90 has been generally adopted by the other standards for testing liquid-immersed distribution, power, and regulating transformers. Some of the more significant standard factory tests specified ...
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