The megger leads are connected in the following manner. Black lead to motor ground terminal or motor frame. The other lead to one of the phase wires. Meg that coil to ground and note the reading. Do the same with the other two motor leads and note the readings. Look at all of the three reading that you have taken. Engineers like the reading to be above 5 meg. Preferred readings about 2 meg. Motor needs looking after below 1 meg.
If it is a motor connection that is being tested, engineers like to see it above 5 meg. In reality above 2 meg is fine.
There is only two test you can do measure on the Ohm scale the resistance at the power connection if there is a reading then it means it's not open but that's not an indication that the motor is Ok, then measure on the MOhm scale between the body of the motor and any of the power connections if there is a reading then the motor have a internal short, the best is to open the motor and inspect it for black spots on the coils your nose is the best test smell it
That sounds quite good since the main winding should be insulated from the case. 10Mohm is a very large resistance it is well within normal range of the motor.
You use a device called a megger or meg ohm meter. Have the voltage range of the megger set to the working voltage of the motor. The first test should be to ground. One lead on the frame of the motor , the other lead one of the 6 wires. Test all 6 wires. If no ground shows up, test the individual coils against one another. If the coils are not grounded together, the motor is safe to energize.
Yes. You can "Meg" any motor, AC or DC.
The megger leads are connected in the following manner. Black lead to motor ground terminal or motor frame. The other lead to one of the phase wires. Meg that coil to ground and note the reading. Do the same with the other two motor leads and note the readings. Look at all of the three reading that you have taken. Engineers like the reading to be above 5 meg. Preferred readings about 2 meg. Motor needs looking after below 1 meg.
The megger leads are connected in the following manner. Black lead to motor ground terminal or motor frame. The other lead to one of the phase wires. Meg that coil to ground and note the reading. Do the same with the other two motor leads and note the readings. Look at all of the three reading that you have taken. Engineers like the reading to be above 5 meg. Preferred readings about 2 meg. Motor needs looking after below 1 meg.
A shorted motor would read zero ohms. Note, however, that a meg ohm tester is not an appropriate test device to assess if the motor is shorted, because the difference between shorted and "operational" can often be just a few ohms - you need a low resistance test device - not a meg ohm tester.
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If it is a motor connection that is being tested, engineers like to see it above 5 meg. In reality above 2 meg is fine.
1.46 meg ohm
Meg Small has written: 'Meg Small'
Meg Stuart has written: 'Meg Stuart'
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Meg Kasdan's birth name is Meg Goldman.
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