31
2
Main circuit terminal specifications
2.6.3
Cable sizes of the main control circuit terminals and earth (ground) terminals
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
200V class (when input power supply is 220V)
<Converter (FR-HC2)>
<Outside box (FR-HCB2)>
<Reactor1 (FR-HCL21)>
<Reactor2 (FR-HCL22)>
For the 55K or lower, the cable size is that of the cable (HIV cable (600V class 2 vinyl-insulated cable) etc.) with continuous maximum permissible temperature of
75°C. It assumes that the surrounding air temperature is 50°C or less and the wiring distance is 20m or less.
For the 75K or higher, the recommended cable size is that of the cable (LMFC (heat resistant flexible cross-linked polyethylene insulated cable) etc.) with
continuous maximum permissible temperature of 90°C. It assumes that the surrounding air temperature is 50°C or less and wiring is performed in an enclosure.
The recommended cable size is that of the cable (THHW cable) with continuous maximum permissible temperature of 75°C. It assumes that the surrounding
air temperature is 40°C or less and the wiring distance is 20m or less. (Selection example for use mainly in the United States.)
For the 15K or lower, the recommended cable size is that of the cable (PVC cable) with continuous maximum permissible temperature of 70°C. It assumes
that the surrounding air temperature is 40°C or less and the wiring distance is 20m or less. For the 30K or higher, the recommended cable size is that of the
cable (XLPE cable) with continuous maximum permissible temperature of 90°C. It assumes that the surrounding air temperature is 40°C or less and wiring is
performed in an enclosure. (Selection example for use mainly in Europe.)
Screw size and tightening torque for earthing (grounding) are indicated in parentheses. (Refer to
.
)
If a cable thinner than the recommended cable size is used, it may not be protected by the DC fuse. (Refer to
for the fuse selection.)
Model Name
Terminal
Screw Size
Tightening
Torque
N
m
Crimping
Terminal
Cable Size
HIV, etc.(mm
2
)
AWG/MCM
PVC, etc.(mm
2
)
R4/L14,
S4/L24,
T4/L34
P/+, N/-
R4/L14,
S4/L24,
T4/L34
P/+, N/-
Earthing
cable
R4/L14,
S4/L24,
T4/L34
P/+, N/-
R4/L14,
S4/L24,
T4/L34
P/+, N/-
Earthing
cable
FR-HC2-7.5K
M5
2.5
8-5
5.5-5
8
5.5
5.5
8
10
10
6
6
FR-HC2-15K
M6
4.4
22-6
14-6
22
14
14
4
6
25
16
16
FR-HC2-30K
M8/
M10(M6)
7.8/14.7
(4.4)
60-8
38-10
60
38
22
1/0
1
50
50
25
FR-HC2-55K
M12(M6)
24.5 (4.4)
100-12
100-12
100
100
38
4/0
4/0
95
95
50
FR-HC2-75K
M12(M10)
24.5 (14.7)
100-12
100-12
100
100
38
4/0
4/0
95
95
50
Model Name
Terminal
Screw Size
Tightening
Torque
N
m
Crimping
Terminal
Cable Size
HIV, etc.(mm
2
)
AWG/MCM
PVC, etc.(mm
2
)
R2/L12, S2/L22,
T2/L32
R3/L13, S3/L23,
T3/L33
R2/L12, S2/L22,
T2/L32
R3/L13, S3/L23,
T3/L33
Earthing
cable
R2/L12, S2/L22,
T2/L32
R3/L13, S3/L23,
T3/L33
R2/L12, S2/L22,
T2/L32
R3/L13, S3/L23,
T3/L33
Earthing
cable
FR-HCB2-7.5K
M5
2.5
8-5
8
5.5
8
10
6
FR-HCB2-15K
M5
2.5
22-5
22
14
4
25
16
FR-HCB2-30K
M6
4.4
60-6
60
22
1/0
50
25
FR-HCB2-55K
M8(M6)
7.8 (4.4)
125-8
125
38
250
120
35
FR-HCB2-75K
M12(M10)
24.5 (14.7)
100-12
100
38
4/0
95
35
Model Name
Terminal
Screw Size
Tightening
Torque
N
m
Crimping
Terminal
Cable Size
HIV, etc.(mm
2
)
AWG/MCM
PVC, etc.(mm
2
)
R/L1, S/L2, T/L3
R2/L12, S2/L22, T2/L32
R/L1, S/L2, T/L3
R2/L12, S2/L22, T2/L32
R/L1, S/L2, T/L3
R2/L12, S2/L22, T2/L32
R/L1, S/L2, T/L3
R2/L12, S2/L22, T2/L32
FR-HCL21-7.5K
M5
2.5
8-5
8
8
10
FR-HCL21-15K
M6
4.4
22-6
22
4
25
FR-HCL21-30K
M8
7.8
60-8
60
1/0
50
FR-HCL21-55K
M12
24.5
125-12
125
250
120
FR-HCL21-75K
M12
24.5
100-12
100
4/0
95
Model Name
Terminal
Screw Size
Tightening
Torque
N
m
Crimping
Terminal
Cable Size
HIV, etc.(mm
2
)
AWG/MCM
PVC, etc.(mm
2
)
R3/L13, S3/L23, T3/L33
R4/L14, S4/L24, T4/L34
R3/L13, S3/L23, T3/L33
R4/L14, S4/L24, T4/L34
R3/L13, S3/L23, T3/L33
R4/L14, S4/L24, T4/L34
R3/L13, S3/L23, T3/L33
R4/L14, S4/L24, T4/L34
FR-HCL22-7.5K
M5
2.5
8-5
8
8
10
FR-HCL22-15K
M6
4.4
22-6
22
4
25
FR-HCL22-30K
M8
7.8
60-8
60
1/0
50
FR-HCL22-55K
M12
24.5
125-12
125
250
120
FR-HCL22-75K
M12
24.5
100-12
100
4/0
95
HC2.book 31 ページ ２０１２年１１月１９日 月曜日 午前１０時５２分
