Main circuit terminals (for 12-phase rectification)
41
2
• When wiring cables to the main circuit conductor, tighten each nut from the right of the conductor as seen from the front of
the unit. When wiring two cables, place cables on both sides of the conductor. Use the bolts and nuts removed earlier for
these connections. (Refer to the following figure.)
• For the installation of the noise filter on the power input line to the converter unit, install one common mode choke
per line
between the wye/delta connection and the converter unit.
Recommended common mode choke: FT-3KM F200160PB FINEMET
®
common mode choke cores manufactured by Hitachi Metals, Ltd.
FINEMET is a registered trademark of Hitachi Metals, Ltd.
2.6.5
Recommended cables
Select a recommended size cable to ensure that the voltage drop ratio is within 2%.
The following table shows the recommended cable size for cables that are 20 m in length (440 V input power supply, 150%
overload current rating for 1 minute).
It is the gauge of the cable with the continuous maximum permissible temperature of 90°C or higher (LMFC (heat resistant flexible cross-linked
polyethylene insulated cable), etc.). It assumes a surrounding air temperature of 50°C or lower and in-enclosure wiring.
It is the gauge of the cable with continuous maximum permissible temperature of 90°C (THHN cable). It assumes a surrounding air temperature
of 40°C or lower and in-enclosure wiring. (Selection example mainly for use in the United States.)
It is the gauge of the cable with continuous maximum permissible temperature of 90°C (XLPE cable). It assumes a surrounding air temperature
of 40°C or lower and in-enclosure wiring. (Selection example mainly for use in Europe.)
It is applied to the screws for terminals R/L1, S/L2, T/L3, P/+, and N/-, and a screw for earthing (grounding).
Screw size for earthing (grounding) is indicated in parentheses.
The crimp terminals are the same for R2/L12, S2/L22, and T2/L32.
The line voltage drop can be calculated by the following formula:
Line voltage drop [V] =
× wire resistance [m
Ω
/m] × wiring distance [m] × current [A] / 1000
Use a larger diameter cable when the wiring distance is long or when the voltage drop (torque reduction) in the low speed
range needs to be reduced.
CAUTION
For 12-phase rectification, make sure to remove all of the shorting conductors between terminals R/L1
and R2/L12, between terminals S/L2 and S2/L22, and between terminals T/L3 and T2/L32 of the
converter unit. If the power transformer is connected without removing these conductors, it may be
burned.
Check the correct connection between the output terminals in the star/delta connection of the power
transformer and the terminals of the converter unit. Otherwise a burst, damage, etc. may occur in the
converter unit or the power transformer.
Converter
model
FR-CC2-[]-P
Terminal
screw size
Tightening
torque
N
m
Crimping
terminal
Cable gauge
HIV cables, etc. (mm
2
)
AWG/MCM
PVC cables, etc. (mm
2
R/L1, S/L2, T/
L3
(per circuit)
R/L1, S/L2, T/
L3
(per circuit)
P/+,
N/-
Earthing
(grounding)
cable
R/L1, S/L2, T/
L3
(per circuit)
R/L1, S/L2, T/
L3
(per circuit)
Earthing
(grounding)
cable
H400K
M12 (M10) 46
150-12
2
150
2
200
100
2
4/0
2
95
2
95
H450K
M12 (M10) 46
150-12
2
150
2
250
100
2
250
2
120
2
120
H500K
M12 (M10) 46
150-12
2
150
3
200
2
100
2
300
2
150
2
120
H560K
M12 (M10) 46
C2-200
2
200
3
200
2
100
2
350
2
185
2
150
3
Summary of Contents for FR-CC2-P
Page 59: ...MEMO 58 ...
Page 73: ...MEMO 72 ...
Page 137: ...MEMO 136 ...
Page 153: ...MEMO 152 ...
Page 165: ...MEMO 164 ...
Page 169: ...MEMO 168 ...
