Applicable Cables And The Wiring Length - Mitsubishi Electric FR-A820-00046 Instruction Manual

Installation and wiring
2.5.3

Applicable cables and the wiring length

Select a recommended cable size to ensure that a voltage drop will be 2% or less.
If the wiring distance is long between the inverter and motor, a voltage drop in the main circuit wires
will cause the motor torque to decrease especially at a low speed.
The following table indicates a selection example for the wiring length of 20 m.
200 V class (220 V power reception (with 150% rated current for one minute))
Terminal
Applicable
screw
inverter model
FR-A820-
size
00046(0.4K) to
M4
00167(2.2K)
00250(3.7K) M4
00340(5.5K) M5(M4)
00490(7.5K) M5(M4)
00630(11K) M5
00770(15K) M6
00930(18.5K) M8(M6)
01250(22K) M8(M6)
01540(30K) M8(M6)
01870(37K) M10(M8)
02330(45K) M10(M8)
03160(55K) M12(M8)
03800(75K) M12(M10)
04750(90K) M12(M10)
Tab. 2-9: Cable size (200 V class)
FR-A800
Crimping
terminal
Tighten-
ing
torque
R/L1, R/L1,
Nm
S/L2, U, V, W S/L2,
T/L3
1.5 2-4 2-4
1.5 5.5-4 5.5-4
2.5 5.5-5 5.5-5
2.5 14-5 8-5
2.5 14-5 14-5
4.4 22-6 22-6
7.8 38-8 38-8
7.8 38-8 38-8
7.8 60-8 60-8
14.7 80-10 80-10
14.7 100-10 100-10
24.5 100-12 100-12
24.5 150-12 150-12
24.5 150-12 150-12
2
HIV cables, etc. (mm )
Earthing
(ground-
U, V, W P/+, P1
ing)
T/L3
cable
2 2 2 2
3.5 3.5 3.5 3.5
5.5 5.5 5.5 5.5
14 8 14 5.5
14 14 14 8
22 22 22 14
38 38 38 14
38 38 38 22
60 60 60 22
80 80 80 22
100 100 100 38
100 100 100 38
125 125 125 38
150 150 150 38
Main circuit terminals
Cable gauge
AWG/MCM
PVC cables, etc. (mm
R/L1, R/L1,
S/L2, U, V, W S/L2, U, V, W
T/L3 T/L3
14 14 2.5
12 12 4
10 10 6
6 8 16
6 6 16
4 4 25
2 2 35
2 2 35
1/0 1/0 50
3/0 3/0 70
4/0 4/0 95
4/0 4/0 95
250 250 —
300 300 —
2
)
Earthing
(ground-
ing)
cable
2.5 2.5
4 4
6 6
10 16
16 16
25 16
35 25
35 25
50 25
70 35
95 50
95 50
— —
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