Goodrive300 Series VFD Peripherial options and parts
271
The rated working
current of the
contactor(A)
Note: The accessory specifications described in the preceding table are ideal values. You can select
accessories based on the actual market conditions, but try not to use those with lower values.
D.6 Reactors
When the voltage of the grid is high, the transient large current that flows into the input power circuit
may damage rectifier components. You need to configure an AC reactor on the input side, which can
also improve the current adjustment coefficient on the input side.
When the distance between the VFD and motor is longer than 50 m, the parasitic capacitance
between the long cable and ground may cause large leakage current, and overcurrent protection of
the VFD may be frequently triggered. To prevent this from happening and avoid damage to the motor
insulator, compensation must be made by adding an output reactor. When a VFD is used to drive
multiple motors, take the total length of the motor cables (that is, sum of the lengths of the motor
cables) into account. When the total length is longer than 50 m, an output reactor must be added on
the output side of the VFD. If the distance between the VFD and motor is 50 m to 100 m, select the
reactor according to the following table. If the distance is longer than 100 m, contact INVT's technical
support technicians.
The VFDs of 380V (≥37Kw), 500V (≥22Kw) and of 660V are equipped with internal DC reactors for
the improvement of power factors and the avoidance of damage from high input current to the
rectifying components because of the high-capacity transformer. The device can also cease the
damage to the rectifying components which are caused by supply net voltage transients and
harmonic waves of the loads.
Input reactor
DC reactor
Output reactor
D.6.1 AC 3PH 380V(-15%)–440V(+10%)
To Next Page
Loading...
Need help?
General