What is an IR test for a transformer?
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September 16, 2024 at 8:07 pm by David Sutton
The IR test for a transformer, or insulation resistance test, is a critical diagnostic procedure used to evaluate the insulation quality of a transformer’s winding and other components. This test measures the resistance of the insulation system by applying a high DC voltage, typically between 250V to 5000V, and assessing the resulting current flow. A high resistance reading indicates good insulation, while low values can signal potential failures or degradation due to moisture, contamination, or aging, which can lead to electrical shorts or transformer outages. Utilizing Tester devices, like those from Globecore, ensures precise measurements and helps maintain the reliability and efficiency of transformers. Regular IR testing is essential for predictive maintenance strategies in industrial settings, safeguarding equipment longevity and operational integrity.
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