Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) - ForGe Control (PanelView 550) User Manual
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Rockwell Automation Publication 7000-UM151E-EN-P - January 2013
Appendix B Line & Load Cable Sizes
Notes:
This data is informative only; do not base final design criteria solely on this data. Ensure you follow
national and local installation codes, industry best practices, and cable manufacturer
recommendations.
1. Some ‘A’ Frames, most ‘B’ Frames, and all ‘C’ Frames have a single enclosure opening provision for
both line and load cables (designated by
1
).Most ‘A’ Frames and some ‘B’ Frames have separate
opening provisions for line and load cables. All cabling capacities shown in this table are “worst
case” conditions when both line and load cabling enters and exits in the same direction.
2. Cable sizes are based on overall dimensions of compact-stranded three-conductor shielded cable
(common for industrial cable tray installations). Maximum sizing stated accounts for minimum rated
cable insulation requirements and the next higher-rated cable (i.e., 8kV is not commercially available
in many areas of the world, therefore Rockwell Automation provides an 8kV (minimum rating) as
well as a 15kV rating, when applicable. Enclosure openings will accommodate the thicker insulation
on the higher-rated cable. IEC ratings show the equivalent to the NEMA sizes. The exact cable mm
2
size shown is not commercially available in many cases; use the next smaller standard size.
3. Cable enters termination point horizontally in this case, therefore orient space for the stress cones
horizontally also.
4. Minimum cable bend radius recommendations vary by national codes, cable type, and cable size.
Consult local codes for guidelines and requirements. General relationship of cable diameter to bend
radius is typically between 7x —12x (e.g., if the cable diameter is 1 inch [2.54cm] the minimum bend
radius could range between 7-12 inches [18.8-30.48cm]).
5. For minimum cable insulation requirements, refer to the “PowerFlex 7000 Medium Voltage AC Drive
User Manual” for your particular frame (‘A’, ‘B’, or ‘C’ Frame). Stated voltages are peak line-to-
ground. PLEASE NOTE: Some cable manufacturers rate cabling based on RMS line-to-line.
6. Ground lug capabilities: ‘A’ Frame—two (2) mechanical range lugs for ground cable connections; ‘B’,
or ‘C’ Frame—up to ten (10) mechanical range lugs for ground cable connections are available,
typically these frames supply four (4). Mechanical range lugs can accommodate cable size #6-
250MCM (13.3 - 127mm2).
7. 18 Pulse VFDs (R18TX) have nine (9) line-side connections from the secondary isolation transformer
windings entering the VFD. Lug pads are available for each connection. The lug pad and enclosure
can generally accommodate 2 cables per connection, 18 cables in total (applies to all “B” and “C”
configurations).
8. Maximum cable size for “B” Frame (2 per phase) and “C” Frame (4 per phase) is 500MCM (253mm
2
,
limited by lug pad assembly size and clearance requirements.
9. As cabling methods can vary widely, maximum cable sizes shown do not account for the size of the
conduit hub. Verify size of conduit hub(s) against the “Drive enclosure openings” shown.
‘B’ Frame
(Air-
Cooled)
cont’d.
PF7000
2400V/60Hz/RP18TX
7
46-430
70.8
9.79x21.06 (249x535)
1
(2) 500MCM 5kV
or 8kV/phase
(2) 253mm² 5kV
or 8kV/phase
16.4 (415)
PF7000
3300V/50Hz/RP18TX
7
46-430
70.9
9.79x21.06 (249x535)
1
(2) 500MCM 5kV
or 8kV/phase
(2) 253mm² 5kV
or 8kV/phase
16.4 (415)
PF7000
4160V/50Hz/RP18TX
7
46-430
70.9, 70.18
9.79x21.06 (249x535)
1
(2) 500MCM 5kV
or 8kV/phase
(2) 253mm² 5kV
or 8kV/phase
16.4 (415)
PF7000
4160V/60Hz/RP18TX
7
46-430
70.8, 70.9
9.79x21.06 (249x535)
1
(2) 500MCM 5kV
or 8kV/phase
(2) 253mm² 5kV
or 8kV/phase
16.4 (415)
PF7000
6600V/50Hz/RP18TX
7
40-215
70.9
9.79x21.06 (249x535)
1
(2) 500MCM 8kV
or 15kV/phase
(2) 253mm² 8kV
or 15kV/phase
16.4 (415)
PF7000
6600V/50Hz/RP18TX
7
250-430
70.18
9.79x21.06 (249x535)
1
(2) 500MCM 8kV
or 15kV/phase
(2) 253mm² 8kV
or 15kV/phase
16.4 (415)
PF7000
6600V/60Hz/RP18TX
7
40-215
70.9
9.79x21.06 (249x535)
1
(2) 500MCM 8kV
or 15kV/phase
(2) 253mm² 8kV
or 15kV/phase
16.4 (415)
PF7000
6600V/60Hz/RP18TX
7
250-430
70.18
9.79x21.06 (249x535)
1
(2) 500MCM 8kV
or 15kV/phase
(2) 253mm² 8kV
or 15kV/phase
16.4 (415)
PRODUCT
OUTPUT (MOTOR SIDE)
Bulletin
Description (V/
Freq./Rect.)
Drive
rating
(A)
Drive Structure Code
Drive Enclosure
Opening
Inches (mm)
1
Max. Size & No.
Incoming Cables:
NEMA
2-4-5-6-8-9
Max. Size & No.
Incoming Cables:
IEC
2-4-5-6-8-9
Vertical Space
Avail. for Stress
Cones Inches
(mm)