30 Rockwell Automation Publication 750-RM004A-EN-P - April 2018
Chapter 1 Selection Considerations
Figure 6 - PowerFlex 755TM Common Bus Inverter, Frame 8, 505 A, Normal Duty, Catalog Code
‘D/E…D505’, Integral DC Input Fuses
Power Cables
The PowerFlex 700S IP20/IP21/IP54 enclosed drives used various AC and
DC power connection methods. If you intend to reuse any of the existing AC
power cables, review the installation and verify that the cables, lugs, and other
cable ratings meet the requirements of the new PowerFlex 755TL/TR drives or
PowerFlex 755TM common bus inverters.
PowerFlex 755TL/TR drives and PowerFlex 755TM common bus inverters
with IP21/IP54 enclosures are connected to the required AC or DC power
source with two hole UL Listed crimp barrel lugs that are bolted to the internal
power busbars or bus stubs.
Recommended cable description;
• Three tinned copper conductors with XLPE insulation and three bare
copper ground conductors.
• Minimum insulation rating 600V, 75 °C (167 °F)
• Maximum 500 MCM copper conductors, multiple parallel conductors
may be required per phase.
• Shielded cable with continuous aluminum armor, copper braid/
aluminum foil combination shield, and tinned copper drain wire, three
drain wires per cable assembly, although not necessary, is recommended
and may be required to meet some EMC standards for CE, C-Tick, or
FCC.
• Armored cable with PVC jacket.
ATTENTION: National Codes and standards (NEC, VDE, CSA, BSI, and so
forth) and local codes outline provisions for safely installing electrical
equipment. Installation must comply with specifications regarding wire
types, conductor sizes, branch circuit protection, and disconnect devices.
Failure to do so may result in personal injury and/or equipment damage.
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