DRV-28 inverter
s Optional peripheral accessories
-322-
Image
Name
Description
Cable
Accessory for signal transmission
Breaker
Device for electric shock prevention and
protection against short-to-ground that may
cause current leakage and fire. Select
residual-current circuit breakers (RCCBs)
that are applicable to inverters and can
restrict high-order harmonics, and of which
the rated sensitive current for one inverter is
larger than 30 mA.
Input reactor
Accessories used to improve the current
adjustment coefficient on the input side of
the inverter, and thus restrict high-order
harmonic currents.
Inverters of 400V, 132 kW or higher can be
directly connected to external DC reactors.
DC reactor
Input filter
Accessory that restricts the electromagnetic
interference generated by the inverter and
transmitted to the public grid through the
power cable. Try to install the input filter near
the input terminal side of the inverter.
or
Brake unit or brake
resistor
Accessories
used
to
consume
the
regenerative energy of the motor to reduce
the deceleration time.
Inverters of 400V, 37 kW or lower need only
to be configured with brake resistors, those
of 400V, 132 kW or higher also need to be
configured with brake units, and those of
400V, 45 kW to 110 kW can be configured
with optional built-in brake units.
Output filter
Accessory used to restrict interference
generated in the wiring area on the output
side of the inverter. Try to install the output
filter near the output terminal side of the
inverter.
Output reactor
Accessory used to lengthen the valid
transmission distance of the inverter, which
effectively restrict the transient high voltage
generated during the switch-on and
switch-off of the IGBT module of the inverter.
