Phase Rotation Verification While resistance checks confirm physical integrity, verifying phase rotation ensures the motor turns in the correct direction. 5 to 5 ohms, depending on the motor size.
Balance Check 3 Phase Motor Phases
The reading should indicate open circuit (no continuity). Verifying Disconnection Use the continuity function of your multimeter to confirm that the motor is completely disconnected from the supply.
Compare these three readings. Measure the resistance between V and W.
Balance Check 3 Phase Motor Phases
A reading of zero suggests a short circuit, while an infinite or extremely high reading indicates an open circuit or broken winding. The first step is to isolate the motor from the power supply and lock out the energy source.
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