Field Winding - Test
Field Winding Continuity Test
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Illustration 1 | g01065374 |
Rotor Assembly (3) Slip Rings (4) Rotor (5) Rotor Shaft |
- Set the multimeter to the 200 ohm resistance scale. Measure the resistance between the slip rings (3) .
- The resistance between the slip rings (3) should be within the following values.
Resistance of field winding at 24 °C (75 °F)
- Replace the rotor (4) if the measurement is incorrect.
Field Winding Ground Test
- Set the multimeter to the 20 M ohm resistance scale. Measure the resistance between one of the slip rings (3) and the rotor shaft (5) .
- The multimeter reading should be greater than 100 K Ohms (0.100 M Ohms).
- Replace the rotor (4) if the multimeter reading is low. Low resistance indicates undesired continuity between the field winding and the rotor shaft.
- Repeat steps 1 through 3 for the other slip ring (3) .
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