Schaffner dv/dt filters

Dv/dt filters

Protect motors against high voltage increases and voltage peaks at motor terminals

Our dv/dt filters protect motors against high voltage increases and voltage peaks at motor terminals.

Since modern motor solutions consist of variable speed drives (VSD), dv/dt filters are a vital system component. Dv/dt filters allow longer motor cables and are a central element for retrofitting actions. With dv/dt filters, the voltage has still a pulse shaped wave form, though the current is sinusoidal. Due to their lower reactor and capacitor values, generally dv/dt output filters are smaller and lighter in weight than sine wave filters.

Capabilities

  • Phases: 1 and 3
  • Current range: up to 5 kA
  • Short circuit current withstand: up to 50 kA
  • Voltage range: up to 36 kV
  • Fundamental frequency: up to 1 kHz
  • Switching frequency: up to 20 kHz
  • Insulation classes: 180 / 200 / 220
  • Protection class: up to IP67 and NEMA 6/6P
  • Cooling methods: AN, AF, WD