September 04, 2008
Motor Testing Tip
Why are Phase-to-Phase Resistance Measurements Important?
Phase-to-phase resistance measurements test the circuit and the stator coils for resistance and calculates resistance imbalance. High resistance imbalances indicate possible hot spots, poor solder connections, poor lug connections, or coil shorting in the stator. When left unchecked, these conditions create excess heat leading to premature motor failure. To accurately assess winding resistance, it is important to use equipment that offers a four-wire bridge for measurement.
Tip provided by PdMA MCE Division
Tel: 813-621-6463
http://www.pdma.com
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