Operating Instruction - Frequency Inverter 230V / 400V ... - opis.cz

5.4 Motor ConnectionThe connection of the motor and the brake resistor to the frequency inverter is to bedone using shielded cables. The shield is to be connected to PE potential properly, i.e.with good conductivity, on both sides. The control, mains and motor lines must bekept physically separate from one another. The user must comply with the applicablelimits stipulated in the relevant national and international directives as regards theapplication, the length of the motor cable and the switching frequency.Permissible length of motor cable without output filterFrequency inverter unshielded cable shielded cable0.55 kW … 1.5 kW 50 m 25 m1.85 kW … 4.0 kW 100 m 50 m5.5 kW … 9.2 kW 100 m 50 m11.0 kW … 15.0 kW 100 m 50 m18.5 kW … 30.0 kW 150 m 100 m37.0 kW … 65.0 kW 150 m 100 mThe specified lengths of the motor cables must not be exceeded if no output filter isinstalled.Upon request, we will check if longer motor cables can be used after taking appropriatetechnical measures, e.g. use of low-capacitance cables and output filters. Thefollowing table includes standard values if an output filter is usedPermissible length of motor cable with output filterFrequency inverter unshielded cable shielded cable0.55 kW … 1.5 kW on inquiry on inquiry1.85 kW … 4.0 kW 150 m 100 m5.5 kW … 9.2 kW 200 m 135 m11.0 kW … 15.0 kW 225 m 150 m18.5 kW … 30.0 kW 300 m 200 m37.0 kW … 65.0 kW 300 m 200 mNote:The frequency inverters ≤ 9.2 kW with integrated EMC filter comply withthe emission limits stipulated in EN 61800-3 if the motor cable is notlonger than 10 m. Customer-specific requirements can be met by meansof an optional filter.34 02/06