LSIS sv-ip5a - Micro Surge Filter (Designed for Inverter-Driven 400 V Class Motor)

Chapter 8 - Options
8-11
8.2.5 Micro surge filter (Designed for Inverter-driven 400V Class motor)
In the PWM type inverter, a surge voltage attributable to wiring constants is generated at the motor terminals.
Especially for a 400V class motor, the surge voltage may deteriorate the insulation. When the 400V class motor
is driven by the inverter, consider the following measures:
 Rectifying the motor insulation
For the 400V class motor, use an insulation-rectified motor. Specifically, the “400V class inverter-driven,
insulation-rectified motor”.
For the dedicated motor such as the constant-torque motor and low-vibration motor, use the “inverter-driven,
dedicated motor”.
 Suppressing the surge voltage on the inverter output side
On the secondary side of the inverter, connect the optional surge voltage suppression filter.
 Wiring
 Caution
Check the Input/Output when wiring the filter.
Wiring distance from inverter output to filter input should not exceed 5 meter.
Wiring distance from filter to motor should not exceed 300 meter.
U,V,W
Inverter
Motor
Within 5m Within 300m
Surge
Suppressor filter