How to Use a Multimeter to Check the Condition of an Electric Vehicle Motor

[VonGemma]

Using a multimeter to check the condition of an electric vehicle motor involves the following steps: With the power off, connect the black and red probes of the multimeter to the motor's terminals for measurement. For a three-phase motor, measure between each pair of terminals. Observe the resistance value displayed on the multimeter. A resistance reading indicates that the motor windings are conducting properly, while no reading suggests that the motor is damaged. A multimeter is a measuring instrument used in power electronics and other fields, primarily for measuring resistance and DC voltage. When using a multimeter, pay attention to the following: 1. Before use, perform a mechanical zero adjustment to ensure the multimeter needle points to the zero voltage or zero current position. 2. Do not touch the metal parts of the probes with your hands during use. 3. When measuring a specific electrical parameter, disconnect the probes and switch the range before taking the measurement. 4. Always place the multimeter horizontally during use to avoid errors. 5. After use, set the selector switch to the maximum AC voltage range.