Advanced Control C220 Series - Page 35

Mechanical and Electrical Installation
C220/C420 Mechanical and Electrical Installation
34
AC input
reactor
Input side of
the inverter
Improve the power factor of the input side.
Eliminate the high order harmonics of the input
side effectively, and prevent other equipment
from d
amaging due to voltage waveform
deformation.
Eliminate the input current unbalance due to the
AC input reactor.
EMC input
filter
Input side of
the inverter
1) Reduce the external conduction and
radiation interference of the inverter;
2) Reduce the conduction interference flowing
from the power end to the inverter, thus
improving the anti-
interference capacity of the
inverter.
AC output
reactor
Between the
inverter
output
side and the
motor, close
to the inverter
The inverter output side generally has higher
harmonic. When the motor is far from the
inverter, since there are many capacitors in the
circuit, certain harmonics will cause resonance in
the circuit and bring in the following results:
1） Degrade the motor insulation performance
and damage the motor for the long run.
2) Generate large leakage current and cause
frequent inverter protection action.
3) In general, if the distance between the
inverter and the motor exceeds 100 meters, output
AC reactor shall be installed.
3.2.3 Wiring mode