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1.3.3 Wiring of the main circuit
• The high power factor converter (FR-HC) is a high-power factor, low-noise inverter option unit designed for
use with the transistorized inverters (FR-HC compatible models) in accordance with the harmonic
suppression guidelines published by Ministry of Economy Trade and Industry (formerly Ministry of
International, Trade and Industry). This high power factor converter is used for the suppression of
harmonics to an input power supply.
• To comply with the harmonic suppression guidelines published by the MITI, the system needs to be
configured as indicated and make sure that terminals P and N are sacurely connected to terminals P and N
of the inverter. An incorrect connection will cause the high power factor converter to display an alarm or to
be faulty or damaged.
• Refer to the inverter instruction manual on how to wire the system to suppress harmonics to the input
power supply. Especially note the wiring distance and cable size.
(1) Cable, Crimping terminals etc.
The following table lists the cables and crimping terminals used for each of the devices of the High
power factor converter system and the torques for tightening the screws:
Type
Terminal
screw
size
Tightening
torque
N
·
m *3
Crimping
terminal *2
Cables
PVC insulated
Cables
mm
2
AWG
*
1mm
2 *
4
R4, S4,
T4
P, N
R4, S4,
T4
P, N
R4, S4,
T4
P, N
R4, S4,
T4
P, N
FR-HC-7.5K M4 1 8-4 8-4 8 8 8 8 6 6
FR-HC-15K M6 4 22-6 22-6 22 22 4 4 16 16
FR-HC-30K M8 7 60-8 60-8 60 60 1/0 1/0 50 50
FR-HC-55K M12 24 150-12 150-12 150 150
MCM
300
MCM
300
––
FR-HC-H7.5K M4 1 3.5-4 3.5-4 3.5 3.5 12 12 4 4
FR-HC-H15K M6 4 8-6 8-6 8 8 8 8 10 10
FR-HC-H30K M6 4 22-6 22-6 22 22 4 4 25 25
FR-HC-H55K M8 7 60-8 60-8 60 60 1/0 1/0 50 50
Type
Terminal
screw
size
Tightening
torque
N
·
m *3
Crimping
terminal *2
Cables
PVC insulated
Cables
mm
2
AWG
*
1mm
2 *
4
R2, S2,
T2
R3, S3,
T3
R2, S2,
T2
R3, S3,
T3
R2, S2,
T2
R3, S3,
T3
R2, S2,
T2
R3, S3,
T3
FR-HCB-7.5K M5 2 8-5 8-5 8 8 8 8 6 6
FR-HCB-15K M5 2 22-5 22-5 22 22 4 4 16 16
FR-HCB-30K M6 4 60-6 60-6 60 60 1/0 1/0 50 50
FR-HCB-55K M8 7 150-8 150-8 150 150
MCM
300
MCM
300
––
FR-HCB-H7.5K M5 2 3.5-5 3.5-5 3.5 3.5 12 12 4 4
FR-HCB-H15K M5 2 8-5 8-5 8 8 8 8 10 10
FR-HCB-H30K M5 2 22-5 22-5 22 22 4 4 25 25
FR-HCB-H55K M8 7 60-8 60-8 60 60 1/0 1/0 50 50
Type
Terminal
screw
size
Tightening
torque
N
·
m *3
Crimping
terminal *2
Cables
PVC insulated
Cables
mm
2
AWG
*
1mm
2 *
4
R, S, T
R2, S2,
T2
R, S, T
R2, S2,
T2
R, S, T
R2, S2,
T2
R, S, T
R2, S2,
T2
FR-HCL01-7.5K M5 2 8-5 8-5 8 8 8 8 6 6
FR-HCL01-15K M6 4 22-6 22-6 22 22 4 4 16 16
FR-HCL01-30K M8 7 60-8 60-8 60 60 1/0 1/0 50 50
FR-HCL01-55K M12 24 150-12 150-12 150 150
MCM
300
MCM
300
––
FR-HCL01-H7.5K M4 1 3.5-4 3.5-4 3.5 3.5 12 12 4 4
FR-HCL01-H15K M5 2 8-5 8-5 8 8 8 8 10 10
FR-HCL01-H30K M6 4 22-6 22-6 22 22 4 4 25 25
FR-HCL01-H55K M8 7 60-8 60-8 60 60 1/0 1/0 50 50