Mitsubishi Electric 700 Series Installation Manualline page 11

3.2 Wiring fundamentals
3.2.1 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.
400V class (when input power supply is 440V)
Applicable Inverter Type
FR-A 740-00023–00126-EC
FR-A 740-00170-EC
FR-A 740-00250-EC
FR-A 740-00310-EC
FR-A 740-00380-EC
FR-A 740-00470-EC
FR-A 740-00620-EC
FR-A 740-00770-EC
FR-A 740-00930-EC
FR-A 740-01160-EC
FR-A 740-01800-EC
FR-A 740-02160-EC
FR-A 740-02600-EC
FR-A 740-03250-EC
FR-A 740-03610-EC
FR-A 740-04320-EC
FR-A 740-04810-EC
FR-A 740-05470-EC
FR-A 740-06100-EC
FR-A 740-06830-EC
FR-A 740-07700-EC
FR-A 740-08660-EC
FR-A 740-09620-EC
FR-A 740-10940-EC
FR-A 740-12120-EC
4 Tightening Torque [Nm]
Terminal Screw Size *
M4
M4
M4
M5
M5
M6
M6
M6
M8
M8
M8
M10
M10
M10/M12
M10/M12
M12/M10
M12/M10
M12/M10
M12/M10
M12/M10
M12/M10
M12/M10
M12/M10
M12/M10
M12/M10
Crimping Terminal
R/L1, S/L2, T/L3
1.5 2-4
1.5 2-4
1.5 5.5-4
2.5 5.5-5
2.5 8-5
4.4 14-6
4.4 14-6
4.4 22-6
7.8 22-8
7.8 38-8
7.8 60-8
14.7 60-10
14.7 60-10
14.7 80-10
14.7 100-10
24.5 150-12
24.5 150-12
24.5 100-12
24.5 100-12
24.5 150-12
24.5 150-12
24.5 C2-200
24.5 C2-200
24.5 C2-250
24.5 C2-200
WIRING
U, V, W
2-4
2-4
5.5-4
5.5-5
8-5
8-6
14-6
22-6
22-8
38-8
60-8
60-10
60-10
80-10
100-10
150-12
150-12
100-12
100-12
150-12
150-12
C2-200
C2-200
C2-250
C2-250
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