Mitsubishi Electric FR-HC2-7.5K Instruction Manual page 51

Wiring of main circuit (FR-HC2-H280K)
1) Filter capacitor
Install three filter capacitors in parallel to the output side of the reactor 1 or to the input side of the inrush current limit
MC as shown in the above diagram.
Use the cable shown in the table below for the connection of filter capacitor.
Cable gauge
Wiring length
2) Limit resistor, inrush current limit MC
Install a pair of a limit resistor and a 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.
Install the limit resistor to the appended terminal block. Short a terminal block with a terminal block shorting
conductor, and use them as a pair in each phase. Connect the appended terminal blocks to the appended inrush
current limit MCs.
Connection example of inrush current limit MCs and limit resistors (of one phase)
Wire to the
terminal block (22mm
Inrush
current
limit MC
∗1 Make sure that the power cable touches the MC conductor.
∗2 Include one appended limit resistor with thermostat in the S-phase.
Use the cable shown in the below table for the connection of each phase between the reactor 1 and reactor 2.
Cable gauge
Total wiring length
3) Connecting limit resistor thermostats to the converter
Connect a limit resistor thermostat across the converter terminals ROH and SD.
(3) Wiring reactor 2 and converter
 Use the cable shown in the below table for the connection.
Reactor 2
(FR-HCL22-H280K)
R3/ R4/
L13 L14
S3/ S4/
L23 L24
T3/
T4/
L33 L34
44
2
60mm
2m or less
Wire to the
terminal block
Power cable
2
)
Appended
∗2
terminal block
2
200mm
10m or less
Cable gauge
Converter
(FR-HC2-H280K)
Total wiring length
R4/
P/+
L14
S4/
L24
T4/
N/-
L34
Crimping
terminal
Crimping
terminal
Appended terminal block
shorting conductor
200mm
10m or less
Inrush current
limit MC
∗1
MC conductor
2