Mitsubishi Electric FR-HC2-7.5K Instruction Manual page 57

Wiring of main circuit (FR-HC2-H400K, H560K)
1) Filter capacitor
Install filter capacitors to the output side of the reactor 1 or to the input side of the inrush current limit MC as shown in
the connection diagram on page 49.
Connect two units in parallel for 400K, and three units in parallel for 560K.
Use the cable shown in the below table for the connection of filter capacitor.
Model Name
FR-HCC2-H400K
FR-HCC2-H560K
2) Limit resistor, inrush current limit MC
Install a pair of a limit resistor and an inrush current limit MC to the output side of the reactor 1, and install another
pair of those to the input side of the reactor 2.
Short three poles of the inrush current limit MC using the appended MC shorting conductors, and use that for one
phase.
Before attaching an appended MC shorting conductor to an inrush current limit MC, remove the insulation barrier of
the limit MC.
Connect six limit resistors in parallel to the shorting conductors of the inrush current limit MC at each phase. Apply a
thermostat to at least one of the six limit resistors.
Use the cable shown in the below table for the connection of each phase between the reactor 1 and reactor 2.
Model Name
FR-HCL21-H400K
FR-HCL22-H400K
FR-HCL21-H560K
FR-HCL22-H560K
3) Connecting limit resistor thermostats to the converter
Wire the limit resistor thermostats in series at R-phase, S-phase, and T-phase so that the signals from the limit
resistor thermostats are output into one line. In the wiring, also insert a mini relay so that the signal from the mini relay
and the signals from the limit resistor thermostats are output to terminal ROH and SD of the converter as shown in
the connection diagram on page 48.
(3) Wiring reactor 2 and converter
 Use the cable shown in the below table for the connection.
Reactor 2
(FR-HCL22)
R3/
R4/
L13
L14
S3/
S4/
L23
L24
T3/ T4/
L33 L34
50
2
Wiring length
Cable gauge (mm )
60
38
(Example of one phase)
2
Total wiring length
Cable gauge (mm )
2 200
2 250
Converter
Model Name
(FR-HC2)
R4/ FR-HCL22-H400K
P/+
L14
FR-HC2-H400K
S4/
L24
FR-HCL22-H560K
T4/
N/- FR-HC2-H560K
L34
2m or less
Inrush current
limit MC
MC shorting conductor
10m or less
Cable gauge (mm
2 200
2 250
2
Total wiring length
)
10m or less