Set the multimeter to measure resistance and place one probe on a clean, unpainted metal surface on the motor housing. Measure the resistance between V and W.
Checking 3 Phase Motor Windings Continuity with a Multimeter
Capacitors can store energy for a long time, so they must be discharged safely using an insulated tool. A systematic approach ensures safety and provides accurate diagnostic data.
Place one probe on the incoming power terminal and the other on the earth ground. A reading of infinite resistance (OL) signifies good insulation.
Checking 3 Phase Motor Windings Continuity with a Multimeter
If the motor rotates opposite to the desired direction, swapping any two of the three power supply wires will correct it. Ensure the motor is cool to the touch to obtain accurate resistance readings.
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