Eaton PowerXL DG1 - Checking the Cable and Motor Insulation; Figure 33. Product Modified Sticker; Product Modified Sticker

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Chapter 6—Installation requirements
POWERXL SERIES VFD MN040002EN—February 2018 www.eaton.com
Product modified sticker
Figure 33. Product modified sticker
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 PowerXL Series drive 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 >1M ohm
2. Check the input power cable insulation as follows:
•
Disconnect the input power cable from terminals
L1/N, L2/N and L3 of the PowerXL Series drive 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 >1M ohm
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
1000V
•
The insulation resistance must be >1M ohm