SD1 Series Inverters Optional Peripheral Accessories
-155-
Model Fuse (A)
Contactor rated
current (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 inverter 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 inverter 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 inverter 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 inverter.
If the distance between the inverter 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 IMO's technical support
technicians.