- #SINGLE PHASE MOTOR WINDING RESISTANCE CHART HOW TO#
- #SINGLE PHASE MOTOR WINDING RESISTANCE CHART FREE#
Anything higher than this could show an earthing fault with the motor. If the motor is in good condition it should read less than 0.5 Ohms. Using a multimeter you should check the resistance between the motor’s body and earth.
#SINGLE PHASE MOTOR WINDING RESISTANCE CHART HOW TO#
How to perform earth continuity and resistance tests The cooling fan housing should also be checked for any cracking, corrosion or obvious damage.
#SINGLE PHASE MOTOR WINDING RESISTANCE CHART FREE#
You should ensure that all of the blades of the fan are free from any cracks or corrosion. The cooling fan can be checked by removing the housing which is normally secured by a number of screws. If your motor has a cooling fan fitted the final test you should carry out is a visual check on the condition of the cooling fan and the cooling fan housing. You should ensure the shaft is in good condition with no major signs of wear, cracking or damage. The next thing to look at is the condition of the motor’s shaft, this is easier done when the motor is disconnected from the coupling or the mechanical component it is connected to. First, you should take a look at the motor’s external body checking for any signs of cracking, corrosion or any damage. If the motor does not turn easily then it shows you there is a mechanical issue and maybe the bearings or shaft have failed.Īnother test that should be carried out is to visually inspect the condition of the body of the motor, the shaft and the cooling fan. If this is easy to do then this tests that the motor bearings are in good condition.
With the motor isolated you should try and manually turn the motor.
When visually and physically inspecting any component on the motor the power should be isolated and disconnected from the power source wherever possible This will check that the shaft, cooling fan and main body of the motor are in good condition. The first test that you should complete when testing a single phase motor is to check the physical condition of the motor. Electrical Motor How to perform a physical check of the motor