Inverter-related earth-leakage currents

Earth-leakage currents of ≥ 3.5 mA can occur during normal operation.

Earth leakage currents are mainly determined by:

• The amount of DC link voltage
• The PWM frequency
• The motor cable used and its length
• The motor used

Reducing earth-leakage currents (size 0 only)

You can deactivate the suppression capacitors to PE (see chapter "Installation / operation on IT systems") to reduce earth-leakage currents in the inverter.

When the suppression capacitors are deactivated, the EMC filter is no longer active.

SEW-EURODRIVE recommends that you do not use earth-leakage circuit breakers and instead choose other measures to ensure protection of personnel (e.g. according to EN 61800-5-1, EN 50178, EN 60204-1, etc.).