27
3.5.2.
Electrical Wire Size of Input/Output Device and Main Circuit Wires
The electrical wire size of main circuit wires depends on the converter model.
See the table below to use appropriate electrical wires for connection.
■
200 V class
Converter
model
Main circuit contactor
Wiring size [mm
2
]
(4)
Input MCCB
(2)
Input MC
(3)
Input
side (AC)
Output
side (DC)
Ground wire
(5)
Inside board
Outside
board
Inside board
Outside
board
VF66R-7522
400A
S-N400
150
150
150
150
22
VF66R-9022
400A
S-N400
150
150
200
200
38
VF66R-15022
800A
-
150
150
150
150
22
VF66R-18022
800A
-
150
150
200
200
38
■
400 V class
Converter
model
Main circuit contactor
Wiring size [mm
2
]
(4)
Input MCCB
(2)
Input MC
(3)
Input
side (AC)
Output
side (DC)
Ground wire
(5)
Inside board
Outside
board
Inside board
Outside
board
VF66R-7544
200A
S-N200
60
60
60
60
14
VF66R-11044
300A
S-N300
80
80
100
100
22
VF66R-16044
400A
S-N400
150
150
200
200
22
VF66R-20044
500A
S-N600
200
200
200
200
38
VF66R-25044
600A
S-N600
250
250
150 x 2P
(8)
150 x 2P
(8)
38
VF66R-31544
700A
S-N800
150 x 2P
(8)
150 x 2P
(8)
150 x 2P
(8)
150 x 2P
(8)
50
VF66R-40044
1000A
-
200
200
200
200
38
VF66R-50044
1200A
-
250
150 x 2P
(8)
250
150 x 2P
(8)
38
VF66R-60044
1500A
-
200
200
200
200
38
VF66R-75044
2000A
-
250
150 x 2P
(8)
250
150 x 2P
(8)
38
VF66R-100044
2500A
-
250
150 x 2P
(8)
250
150 x 2P
(8)
38
(1) This table is based on the input voltage of 200 VAC for the 200 V class and 380 VAC for the 400 V class.
(2) Input MCCB indicates the rated current values. Determine the breaking capacity of MCCB based on the power
supply capacity, etc. Select a ground fault interrupter for the inverter.
(3) Input MC is selected based on the rated energizing current. Select an appropriate one as needed according
to the opening/closing frequency.
(4) Plan the wiring between the converter and power supply so that voltage drop is below 2 %. The table lists
wire size for inside the board (3 m in length as MLFC) and for outside the board (30 m in length as CV (three
single-core)).
(5) Use the ground wire with many element wires, such as KIV.
(6) Use the solderless terminal CB200-S12 manufactured by J.S.T. MFG. CO., LTD.
(7) Use the R type solderless terminal standardized by Japanese Industrial Standards (JIS C 2805) or the UL/cUL
approved round solderless terminal.
(8) Use "150-L12" for the solderless terminal.
