Eaton PowerXL DM1 Pro Series, Руководство по установке

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Chapter 5—Electrical installation
POWERXL SERIES VFDS
MN040060EN—September 2020 www.eaton.com
Cable routing
If conduit is being used for wiring, use separate conduits
for line voltage (mains), motor cables, and all interface/
control wiring.
To meet the UL requirements, if conduit is being used
for wiring, the enclosure openings provided for conduit
connections in the field shall be closed by UL listed conduit
fittings with the same type rating (Type 1) as the enclosure.
Avoid running motor cables alongside or parallel to any other
wiring. If it is necessary to run motor cables with other
wiring, then maintain spacing between motor cables and
other wiring.
Wiring the VFD
If three or more motor cables are used, each conductor must
have its own overcurrent protection.
ote: N Do not wire motor leads to R+, R–. This will cause
damage to the drive.
ote: N
Actual layout may vary slightly by frame.
Ground wiring
•
Run motor cables in separate conduit.
•
DO NOT RUN CONTROL WIRES in same conduit.
•
Cables sized per Appendix B.
•
Provide dedicated wire for low impedance ground
between drive and motor. DO NOT USE conduit as
ground.
CAUTION
Improper grounding could result in damage to the motor
and/or drive and could void warranty.
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,
L2, 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 (1.1 * 2*
Sqrt (2) X Vdc).
•
The insulation resistance must be >1M ohm.