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How Do You Troubleshoot A 3-Phase Electric Motor?

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How Do You Troubleshoot A 3-Phase Electric Motor?

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Three-phase motors are normally used in commercial-type operations. These motors have fewer parts and are more sturdily built than their single-phase counterparts. As a result these motors are less prone to malfunctions and tend to operate for many years. Because of their industrial use, if they are receiving the correct voltage, they are normally quickly replaced or sent to be rebuilt rather than being extensively troubleshot. Follow the steps below to check for the most common problems for three-phase motors. Take input voltage to the motor using the volt ohmmeter. The motor-specified voltage must be present on all three phases. If not, check supply circuitry, breakers and condition of the motor’s power cord. If the voltage is good, go to Step 2. Examine the motor’s electrical connections and terminals. Remove power to the motor and repair any damaged or loose connections. Remove motor voltage and disengage the motor from the machine that it is running. Reconnect motor voltage and se

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