Mitsubishi Electric FR-F720-00046 Installation Manuallines page 11

WIRING
(2) Cable size
Select the recommended cable size to ensure that a voltage drop will be 2% max.
If the wiring distance is long between the inverter and motor, a main circuit cable voltage drop will cause the motor
torque to decrease especially at the output of a low frequency.
The following table indicates a selection example for the wiring length of 20m (65.62feet).
200V class (when input power supply is 220V)
Terminal
Applicable Inverter
Screw
Model
Size
FR-F720-00046 to
M4
00105-NA
FR-F720-00167-NA M4
FR-F720-00250-NA M4
FR-F720-00340-NA M5
FR-F720-00490-NA M5
FR-F720-00630-NA M5
FR-F720-00770-NA M6
FR-F720-00930-NA M8(M6)
FR-F720-01250-NA M8(M6)
FR-F720-01540-NA M8(M6)
FR-F720-01870-NA M10(M8)
FR-F720-02330-NA M10(M8)
FR-F720-03160-NA M12(M10)
FR-F720-03800-NA M12(M10)
FR-F720-04750-NA M12(M10)
*1 The recommended cable size is that of the cable (e.g. HIV cable (600V class 2 vinyl-insulated cable)) with continuous maximum permissible
temperature of 75°C (167°F). Assumes that the ambient temperature is 50°C (122°F) or less and the wiring distance is 20m (65.62feet) or less.
*2 The recommended cable size is that of the cable (THHW cable) with continuous maximum permissible temperature of 75°C (167°F). Assumes
that the ambient temperature is 40°C (104°F) or less and the wiring distance is 20m (65.62feet) or less.
(Selection example for use mainly in the United States.)
*3 For the FR-F720-00930 or less, the recommended cable size is that of the cable (PVC cable) with continuous maximum permissible temperature
of 70°C (158°F). Assumes that the ambient temperature is 40°C (104°F) or less and the wiring distance is 20m(65.62feet) or less.
For the FR-F720-01250 or more, the recommended cable size is that of the cable (XLPE cable) with continuous maximum permissible
temperature of 90°C (194°F). Assumes that the ambient temperature is 40°C (104°F) or less and wiring is performed in an enclosure.
(Selection example for use mainly in Europe.)
*4 The terminal screw size indicates the terminal size for R/L1, S/L2, T/L3, U, V, W, and a screw for grounding.
A screw for earthing (grounding) of the FR-F720-00930 or more is indicated in ( ).
*5 When connecting the option unit to P/+, P1, N/-, use THHN cables for the option and terminals R/L1, S/L2, T/L3, U, V, W.
8
Crimping
Tightening
Terminal
Torque
R/L1,
N·m
*4
U, V, W
S/L2,
T/L3
1.5 2-4 2-4
1.5 5.5-4 5.5-4
1.5 5.5-4 5.5-4
2.5 14-5 8-5
2.5 14-5 14-5
2.5 22-5 22-5
4.4 38-6 38-6
7.8 38-8 38-8
7.8 60-8 60-8
7.8 80-8 80-8
14.7 100-10 100-10
14.7 100-10 100-10
24.5 150-12 150-12
24.5 150-12 150-12
24.5 100-12 100-12 2×100 2×100
2
AWG/MCM
HIV, etc. (mm )
*1
R/L1,
Ground
R/L1, S/L2,
U, V, W
S/L2,
T/L3
cable
T/L3
2 2 2 14
3.5 3.5 3.5 12
5.5 5.5 5.5 10
14 8 5.5 6
14 14 14 6
22 22 14 4
38 38 22 2
38 38 22 2
60 60 22 1/0
80 80 22 3/0
100 100 38 4/0
100 100 38 4/0
125 125 38 250
150 150 38 2×4/0
38 2×4/0
Cable Sizes
PVC, etc. (mm
*2
R/L1,
U, V, W
S/L2,
T/L3
14 2.5
12 4
10 6
8 16
6 16
6 ( ) 25
*5
2 50
2 50
1/0 50
3/0 70
4/0 95
4/0 95
⎯
250
⎯
2×4/0
⎯
2×4/0
2
)
*3
Ground
U, V, W
cable
2.5 2.5
4 4
6 6
10 16
16 16
25 16
50 25
50 25
50 25
70 35
95 50
95 50
⎯ ⎯
⎯ ⎯
⎯ ⎯