Around 30 percent of electric motor failures are a result of electrical insulation breakdown - the second biggest cause of failure after bearing issues. It is therefore important to identify and predict early signs of insulation degradation for a clear picture of motor health, reducing the risk of unplanned downtime and catastrophic failure. Houghton International begins a testing routine by checking the balance between the motor's phases using a phase resistance test, then comparing the reading for each phase to identify any anomalies. High resistance in a phase may be a sign of bad electrical joints or breakage within the coil or copper.
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