Main circuit terminals (6-phase rectification)
37
2
2.5.3
Applicable cables
Select a recommended cable size to ensure that the voltage drop will be 2% or less.
The following table indicates a selection example for the wiring length of 20 m per converter unit. (440 V input power supply,
150% overload current rating for 1 minute).
LMFC (heat resistant flexible cross-linked polyethylene insulated cable), etc. with a continuous maximum permissible temperature of 90°C or
higher. It is assumed that the cables will be used in a surrounding air temperatures of 50° C or less and housed in an enclosure.
THHN cable with a continuous maximum permissible temperature of 90°C. It is assumed that the cables will be used in a surrounding air
temperatures of 40° C or less and housed in an enclosure.
(For the use in the United States or Canada, refer to
to select an appropriate fuse or molded case circuit breaker (MCCB).)
XLPE cable with a continuous maximum permissible temperature of 90°C. It is assumed that the cables will be used in a surrounding air
temperatures of 40° C or less and housed in an enclosure.
(Selection example for use mainly in Europe.)
Screws for terminals R/L1, S/L2, T/L3, P/+, N/-, and the screw for earthing (grounding).
The size of the earthing (grounding) screw is indicated in parentheses.
The line voltage drop can be calculated by the following formula:
Line voltage drop [V]=
Use a larger diameter cable when the wiring distance is long or when it is desired to decrease the voltage drop (torque
reduction) in the low speed range.
NOTE
• Tighten the terminal screw to the specified torque.
A screw that has been tightened too loosely can cause a short circuit or malfunction.
A screw that has been tightened too tightly can cause a short circuit or malfunction due to the unit breakage.
• Use crimp terminals with insulation sleeves to wire the power supply and motor.
Converter
model
FR-CC2-[]-P
Terminal
screw
Size
Tightening
Torque
N
m
Crimp
terminal
Cable gauge
HIV cables, etc. (mm
2
)
AWG/
MCM
PVC cables, etc. (mm
2
R/L1,
S/L2,
T/L3
R/L1,
S/L2,
T/L3
P/+, N/-
Earthing
(grounding)
cable
R/L1,
S/L2,
T/L3
R/L1,
S/L2,
T/L3
Earthing
(grounding)
cable
H400K
M12 (M10) 46
C2-200
2×200
2
200
100
2
400
2
185
2
95
H450K
M12 (M10) 46
C2-250
2×250
2
250
100
2
500
2
240
2
120
H500K
M12 (M10) 46
C2-200
3×200
3
200
2
100
2
500
2
240
2
120
H560K
M12 (M10) 46
C2-200
3×200
3
200
2
100
3
350
3
185
2
150
× wire resistance [mΩ/m] × wiring distance [m] × current [A]
1000
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