Three-phase supply voltage 200-240 V 50 Hz. EMC radio interference suppression filter, for frequency converter, for ATV630D11M3 converter, category C3, 50 m. Filter rated current 7.6 mA. The max. lengths are only examples as they vary according to the stray capacitance of the motors and cables used. For motors connected in parallel, the length of all cables must be taken into account. The values indicated depend on the nominal switching frequency of the converter. This frequency depends on the nominal size of the converter. Max. length of the shielded cable according to IEC/EN 61800-3 category C2 (50m). Max. length of the shielded cable according to IEC/EN 61800-3 category C3. For more stringent requirements, additional EMC input filters can be used. They reduce conducted emissions to values below category C1, C2 or C3 of the IEC/EN 61800-3 standard. The use of these additional filters is only possible in TN networks (connection to neutral conductor) or TT networks (connection of the neutral conductor to earth). According to the standard IEC/EN 61800-3, Appendix D2.1, filters in IT systems (isolated or neutral earthed impedance) can lead to the fact that the continuous insulation monitoring only takes place in random operation.