Cables And Wiring Length; Cable Size - Mitsubishi Electric FR-F740 EC Instruction Manual

Wiring

Cables and wiring length

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 based on a rated current for 110% overload for 1 minute)
Terminal
Applicable Inverter
Screw
Type
Size
FR-F740/746-00023 to
M4
00083-EC
FR-F740/746-00126-EC M4
FR-F740/746-00170-EC M4
FR-F740/746-00250-EC M4
FR-F740/746-00310-EC M5
FR-F740/746-00380-EC M5
FR-F740/746-00470-EC M6
FR-F740/746-00620-EC M6
FR-F740/746-00770-EC M6
FR-F740/746-00930-EC M8
FR-F740/746-01160-EC M8
FR-F740-01800-EC M8 (M10)
FR-F740-02160-EC M10
FR-F740-02600-EC M10
FR-F740-03250-EC M10 (M12)
FR-F740-03610-EC M10 (M12)
FR-F740-04320-EC M12 (M10)
FR-F740-04810-EC M12 (M10)
FR-F740-05470-EC M12 (M10)
FR-F740-06100-EC M12 (M10)
FR-F740-06830-EC M12 (M10)
FR-F740-07700-EC M12 (M10)
FR-F740-08660-EC M12 (M10)
FR-F740-09620-EC M12 (M10)
FR-F740-10940-EC M12 (M10)
FR-F740-12120-EC M12 (M10)
Tab. 3-4:

Cable size

FR-F700 EC
Crimping
Tighten-
Terminal
ing
Torque
L1, L2, U, V, W L1, L2,
[Nm]
L3 L3
1.5 2-4 2-4
1.5 2-4 2-4
1.5 5.5-4 5.5-4 3.5
1.5 5.5-4 5.5-4 5.5
2.5 8-5 8-5
2.5 14-5 8-5 14
4.4 14-6 14-6 14
4.4 22-6 22-6 22
4.4 22-6 22-6 22
7.8 38-8 38-8 38
7.8 60-8 60-8 60
7.8 60-8 60-8 60
14.7 100-10 100-10 80
14.7 100-10 100-10 100
14.7 150-10 150-10 125
14.7 150-10 150-10 150
100-12 100-12 2 × 100 2 × 100 2 × 100
24.5
100-12 100-12 2 × 100 2 × 100 2 × 100
24.5
150-12 150-12 2 × 125 2 × 125 2 × 125
46
150-12 150-12 2 × 150 2 × 150 2 × 125
46
200-12 200-12 2 × 200 2 × 200 2 × 150
46
C2-200 C2-200 2 × 200 2 × 200 2 × 200
46
C2-250 C2-250 2 × 250 2 × 250 2 × 250
46
C2-250 C2-250 2 × 250 2 × 250 2 × 250
46
C2-200 C2-200 3 × 200 3 × 200 3 × 200
46
C2-200 C2-200 3 × 200 3 × 200 3 × 200
46
HIV, etc. [mm²]
Earth
U, V, W P/+, P1 cable
gauge
2 2 2 2
2 2 3.5 3.5
3.5 3.5 3.5
5.5 5.5 8
8 8 8 8
8 14 14
14 22 14
22 22 14
22 22 14
38 38 22
60 60 22
60 60 38
80 80 38
100 100 38
125 100 38
150 150 38
38
38
38
60
60
60
60
100
100
100
Main circuit connection
Cable Size
AWG PVC, etc. [mm²]
L1, L2, U, V, W L1, L2,
U, V, W
L3 L3
14 14 2.5
12 14 2.5
12 12 4
10 10 6
8 8 10
6 8 16
6 6 16
4 4 25
4 4 25
1 2 50
1/0 1/0 50
1/0 1/0 50
3/0 3/0 70
4/0 4/0 95
250 250 120
300 300 150
2 × 4/0 2 × 4/0 2 × 95 2 × 95
2 × 4/0 2 × 4/0 2 × 95 2 × 95
2 × 250 2 × 250 2 × 120 2 × 120
2 × 300 2 × 300 2 × 150 2 × 150
2 × 350 2 × 350 2 × 185 2 × 185 2 × 95
2 × 400 2 × 400 2 × 185 2 × 185 2 × 95
2 × 500 2 × 500 2 × 240 2 × 240 2 × 120
2 × 500 2 × 500 2 × 240 2 × 240 2 × 120
3 × 350 3 × 350 3 × 185 3 × 185 2 × 150
3 × 400 3 × 400 3 × 185 3 × 185 2 × 150
Earth
cable
gauge
2.5 2.5
2.5 4
4 4
6 10
10 10
10 16
16 16
25 16
25 16
50 25
50 25
50 25
70 35
95 50
120 70
150 95
95
95
120
150
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