03:13
Faizan
An electric induction motor contains a long wire, called a winding, that wraps around its cylindrical base. To test a motor's winding, you must find the wire's resistance. Resistance measures the wire's ability to limit the flow of electrical current. The current flowing through the winding needs to have a specific resistance to function correctly. The number of ohms of resistance needed by the windings is written on the motor case or included with its documentation.
Unplug the motor from its power source, either an electrical socket or battery.
Turn on the digital multimeter, then change its measurement dial to "ohms" to find resistance. The symbol for the ohm on some multimeter models is the capital Greek letter, Omega.
Plug the red probe into the positive port of the multimeter. Plug the black probe into the negative port.
Touch the red probe of the multimeter to the left end of the windings. Touch the black probe to the right end of the windings. The resistance of the windings is displayed on the multimeter screen in ohms. If this reading differs from that specified by the manufacturer, or is zero, the windings are bad. Also, if you can visually see fraying or a tear in the windings, they need to be replaced.
Unplug the motor from its power source, either an electrical socket or battery.
Turn on the digital multimeter, then change its measurement dial to "ohms" to find resistance. The symbol for the ohm on some multimeter models is the capital Greek letter, Omega.
Plug the red probe into the positive port of the multimeter. Plug the black probe into the negative port.
Touch the red probe of the multimeter to the left end of the windings. Touch the black probe to the right end of the windings. The resistance of the windings is displayed on the multimeter screen in ohms. If this reading differs from that specified by the manufacturer, or is zero, the windings are bad. Also, if you can visually see fraying or a tear in the windings, they need to be replaced.
Posted in: electronics
