Soft Start vs Direct-on-Line Inrush

DOL start draws 5–7× rated current, causing voltage dip and mechanical shock—often impossible for large motors or weak grids.

Soft starters and VFDs ramp voltage/frequency, limiting inrush to 2–4× and giving smooth acceleration that protects grid and mechanics.

Choose by power, grid capacity, load type (fan/pump/compressor) and start frequency. XIMA offers liquid-resistor, reactor or HV VFD soft-start for HV motors.