2. Check the stator winding by connecting one terminal of the thermometer to the body, and the second in turn to the three ends of the winding. The ohm meter should show infinity each time. Then you need to check the resistance of the windings.
The connected thermometer between terminals 1-3, 1-2 and 2-3 must show resistance (pic. 4.6):
0.25... 0.28 Ohm - for generators 35 A
0.14.. 0.16 Ohm - for generators 55 A
Pic. 4.6. Generator - stator winding
1, 2 and 3 - ends of the stator windings.
3. Slip rings that are scratched or burnt must be reground.
4. Generator diodes must be checked separately by connecting the ends of the thermometer to the body of the diode and to the diode clamp. When the diode is closed, the ohmmeter shows a resistance close to zero in both directions. During breaks, the ohm meter shows more than 100 kΩ in both directions. The reverse resistance of a healthy diode should be greater than 100 kΩ.
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