The User Manual of 580 Series General Frequency Converter

1) The requirements for leakage protector RCD

The equipment may bring the large leakage current which flows through the protective grounding conductor. Please install Type B leakage protector (RCD) in the primary side of the power supply. In selection of leakage protector (RCD), transient and steady earth leakage current that may occur shall be taken into account when the equipment is started and operated. Please select the exclusive RCD which can restrain the higher harmonic or the general RCD with large residual current.