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Chapter 5—Electrical installation
POWERXL SERIES VFDS
MN040060EN—September 2020 www.eaton.com
Chapter 5—Electrical installation
ote:
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All following information is strongly recommended
but is not necessary if sufficient system design and
validation has been completed.
This chapter contains all of the information required to
properly install and prepare the PowerXL Series VFD for
operation. The contents are listed to serve as a list of tasks
needed to complete the installation. Included in this section
are:
•
Cable selection;
•
Mains connection diagram;
•
Connection tightening torque;
•
Grounding;
•
EMC requirements;
•
Installation in corner grounded networks and IT networks;
•
Checking motor and cable insulation.
Electrical installation warnings and cautions
WARNING
Carry out wiring work only after the frequency inverter
has been correctly mounted and secured.
WARNING
Electric shock hazard—risk of injuries!
Carry out wiring work only if the unit is de-energized.
CAUTION
Debounced inputs may not be used in the safety
circuit diagram.
Fire hazard!
Only use cables, protective switches, and contactors that
feature the indicated permissible nominal current value.
CAUTION
Debounced inputs may not be used in the safety
circuit diagram.
According to product standard IEC/EN 61800-5-1, an
additional equipment grounding (PE) conductor of the same
cross-sectional area as the original protective earthing
conductor must be connected, or the cross-section of
the equipment grounding conductor must be at least
10 mm
2
Cu.
WARNING
The components in the drive’s power section remain
energized after the supply voltage has been switched off.
After disconnecting the supply, wait at least five minutes
before removing the cover to allow the intermediate
circuit capacitors to discharge.
Pay attention to hazard warnings!
Power wiring selection
Motor cable connections are made to terminals U, V, and W.
Cable selection: Power and motor leads
•
Select the mounting location based on requirements
listed. Use UL approved heat-resistant copper cables only.
•
75°C or higher for all units rated.
•
Line voltage/mains should be Class 1 wire only outside.
•
North America.
•
Refer to Appendix B for cable sizing guidelines.
Line (mains) and motor cable installation
The input line and motor cables must be sized in accordance
with the rated PowerXL VFD input and output current.
If motor temperature sensing is used for overload protection,
the output cable size may be selected based on the motor
specifications.
Maximum symmetrical supply current is 100,000 A RMS for
all size PowerXL VFDs.
Input protection
Input protection devices are rated based on PowerXL rated
input and output current. For UL and cUL/CSA, refer to
Appendix D
for proper sizing. For gG/gL (IEC 60269-1),
refer to
Appendix B
for proper sizing.
Consult with service representative for further information
about input protection requirements
