Goodrive270 series VFD for fan and pump Optional peripheral accessories
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To ensure safety, you can configure an electromagnetic contactor on the input side to control the
switch-on and switch-off of the main circuit power, so that the input power supply of the VFD can be
effectively cut off when a system fault occurs.
Table D-1 Ratings for AC 3PH 380V VFD models
VFD model
Breaker rated
Fast-acting fuse
Contactor rated current
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 Reactor
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
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