Connecting power supply cables

  • The rated voltage and frequency of the MOVIMOT® inverter must correspond to the data of the supplying system.
  • Install safety features F11/F12/F13 for line fuses at the beginning of the power supply cable behind the supply bus junction, see chapter "Connecting MOVIMOT® drive".
  • The following safety features are permitted for F11/F12/F13:
    • Fuses in utilization category gG
    • Power circuit breakers with characteristic B or C
    • Motor circuit breaker
  • Dimension the fuses according to the cable cross section.
  • Observe the information in chapter "Technical data" when selecting the fuse.
  • SEW‑EURODRIVE recommends using insulation monitors with pulse-code measurement in voltage supply systems with a non-grounded star point (IT systems). Using such devices prevents false tripping of the insulation monitor due to the earth capacitance of the inverter.
  • Size the cable cross section according to the input current Igrid for rated power (see operating instructions, "Technical data" chapter).
  • For ensuring the isolation and the effectiveness of preventive measures, you have to perform the checks of the valid and applicable standards (e.g. EN 60204-1 or EN 61800-5) after any wiring work for installation, conversion, repair, etc.
  • When using a regenerative power supply in the system, SEW-EURODRIVE recommends a line choke in the supply line of the MOVIMOT® drive unit.