Measure the resistance between V and W. Set the multimeter to measure resistance and place one probe on a clean, unpainted metal surface on the motor housing.
Detect Phase To Phase Shorts
This procedure allows for the verification of winding integrity, phase balance, and the identification of common faults before they lead to catastrophic failure. Significant variation indicates an imbalance, which could be due to a partial short or damage.
Typical values range from 0. The motor contains three separate windings, one for each phase, typically labeled U, V, and W or T1, T2, T3.
Detect Phase To Phase Shorts
A reading of infinite resistance (OL) signifies good insulation. Checking a three-phase motor with a multimeter is a fundamental skill for any electrician or maintenance technician.
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