Note: Parameters of the optional accessories 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 150 m, select the reactor according to the
following table. If the distance is longer than 150 m, contact Sourcetronic's technical support
technicians.
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