9000X AF Drives User Manual
3-20 For more information visit: www.eaton.com
MN04001004E
June 2009
Checking the Cable and Motor Insulation
1. Check the motor cable insulation as follows:
● Disconnect the motor cable from terminals U, V and W of the SVX9000/SPX9000 and
from the motor.
● Measure the insulation resistance of the motor cable between each phase conductor as
well as between each phase conductor and the protective ground conductor.
● The insulation resistance must be >1 MΩ.
2. Check the input power cable insulation as follows:
● Disconnect the input power cable from terminals L1, L2 and L3 of the SVX9000/
SPX9000 and from the utility line feeder.
● Measure the insulation resistance of the input power cable between each phase
conductor as well as between each phase conductor and the protective ground
conductor.
● The insulation resistance must be >1 MΩ.
3. Check the motor insulation as follows:
● Disconnect the motor cable from the motor and open any bridging connections in the
motor connection box.
● Measure the insulation resistance of each motor winding. The measurement voltage
must equal at least the motor nominal voltage but not exceed 1000V.
● The insulation resistance must be >1 MΩ.
To Next Page
Loading...
