3. TROUBLESHOOTING
60
If the result isn’t accord with the standard value, please clean the collector ring thoroughly.
Replace the rotor if necessary.
①
Main Winding
Test the resistance of alternating current output terminal with ohmmeter.
Resistance
0.574
±
10%
Ω
at 20
℃
②
Engine Insulation Resistance Testing
Insulation resistance means resistance between the engine winding and the grounding. Owing
to isolated by insulation material between them, if only the insulation isn’t damaged, the
resistance is rather high.
WARNING
If the insulation resistance decreased obviously, it means that the insulation is damaged. If
you don’t repair it in time, it will result in creepage and endanger the man and equipment
security. Make sure often test the insulation resistance of the winding to understand the
insulation instance.
Winding to Grounding Insulation Resistance Testing
One of the megohmmeter’s terminals is connected through the insulation wire with any
RED
BLUE
BLUE
RED
