Goodrive20-EU series VFD    Peripheral options and parts 
154 
Rated working current 
of the contactor (A) 
C.5 Reactors 
Transient  high  current  in  the  input  power  circuit  may  cause  damage  to  the  rectifying 
components.  It  is  appropriate  to  use  AC  reactor  in  the  input  side  for  the  avoidance  of 
high-voltage input of the power supply and improvement of the power factors. 
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 an 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.